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- PDB-6w6l: Cryo-EM structure of the human ribosome-TMCO1 translocon -

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Basic information

Entry
Database: PDB / ID: 6w6l
TitleCryo-EM structure of the human ribosome-TMCO1 translocon
Components
  • (60S ribosomal protein ...) x 41
  • (Protein transport protein Sec61 subunit ...) x 3
  • (tRNA) x 2
  • 28S ribosomal RNA
  • 5.8S ribosomal RNA
  • 5S ribosomal RNA
  • Calcium load-activated calcium channel
  • Coiled-coil domain-containing protein 47
  • Nascent chain mixture
  • Nicalin
  • Transmembrane protein 147
KeywordsRIBOSOME/PROTEIN TRANSPORT / RIBOSOME-PROTEIN TRANSPORT complex
Function / homology
Function and homology information


negative regulation of nodal signaling pathway / multi-pass transmembrane protein insertion into ER membrane / multi-pass translocon complex / endoplasmic reticulum Sec complex / pronephric nephron development / determination of left/right asymmetry in lateral mesoderm / protein localization to nuclear inner membrane / rough endoplasmic reticulum membrane / endoplasmic reticulum quality control compartment / cotranslational protein targeting to membrane ...negative regulation of nodal signaling pathway / multi-pass transmembrane protein insertion into ER membrane / multi-pass translocon complex / endoplasmic reticulum Sec complex / pronephric nephron development / determination of left/right asymmetry in lateral mesoderm / protein localization to nuclear inner membrane / rough endoplasmic reticulum membrane / endoplasmic reticulum quality control compartment / cotranslational protein targeting to membrane / Ssh1 translocon complex / Sec61 translocon complex / protein targeting to ER / protein insertion into ER membrane / post-translational protein targeting to endoplasmic reticulum membrane / regulation of protein complex stability / SRP-dependent cotranslational protein targeting to membrane, translocation / embryonic brain development / signal sequence binding / SRP-dependent cotranslational protein targeting to membrane / eukaryotic 80S initiation complex / negative regulation of protein neddylation / post-translational protein targeting to membrane, translocation / axial mesoderm development / negative regulation of formation of translation preinitiation complex / endoplasmic reticulum calcium ion homeostasis / endoplasmic reticulum organization / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / regulation of translation involved in cellular response to UV / 90S preribosome assembly / GAIT complex / A band / positive regulation of DNA damage response, signal transduction by p53 class mediator / protein folding chaperone complex / TORC2 complex binding / alpha-beta T cell differentiation / middle ear morphogenesis / exit from mitosis / translation at presynapse / epidermal growth factor binding / retrograde protein transport, ER to cytosol / optic nerve development / cytoplasmic side of rough endoplasmic reticulum membrane / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / retinal ganglion cell axon guidance / negative regulation of ubiquitin protein ligase activity / ER overload response / homeostatic process / response to aldosterone / macrophage chemotaxis / lung morphogenesis / Protein hydroxylation / Peptide chain elongation / Selenocysteine synthesis / positive regulation of signal transduction by p53 class mediator / Formation of a pool of free 40S subunits / ubiquitin ligase inhibitor activity / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / protein transmembrane transporter activity / SRP-dependent cotranslational protein targeting to membrane / blastocyst development / negative regulation of ubiquitin-dependent protein catabolic process / Viral mRNA Translation / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / protein localization to nucleus / GTP hydrolysis and joining of the 60S ribosomal subunit / regulation of signal transduction / L13a-mediated translational silencing of Ceruloplasmin expression / regulation of protein-containing complex assembly / Major pathway of rRNA processing in the nucleolus and cytosol / protein targeting / protein-RNA complex assembly / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / maturation of LSU-rRNA / rough endoplasmic reticulum / translation regulator activity / ERAD pathway / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / MDM2/MDM4 family protein binding / cytosolic ribosome / embryo implantation / protein folding chaperone / cellular response to interleukin-4 / ossification / innate immune response in mucosa / DNA damage response, signal transduction by p53 class mediator / guanyl-nucleotide exchange factor activity / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / regulation of signal transduction by p53 class mediator / positive regulation of translation / post-embryonic development / mRNA 3'-UTR binding / skeletal system development / sensory perception of sound / mitochondrial membrane / cellular response to gamma radiation / bone development / calcium ion transmembrane transport
Similarity search - Function
Calcium load-activated calcium channel / PAT complex subunit CCDC47 / PAT complex subunit CCDC47 / Nicalin / Transmembrane protein 147 / Predicted membrane protein (DUF2053) / Integral membrane protein EMC3/TMCO1-like / Integral membrane protein EMC3/TMCO1-like / Integral membrane protein DUF106 / Protein transport Sec61-beta/Sbh ...Calcium load-activated calcium channel / PAT complex subunit CCDC47 / PAT complex subunit CCDC47 / Nicalin / Transmembrane protein 147 / Predicted membrane protein (DUF2053) / Integral membrane protein EMC3/TMCO1-like / Integral membrane protein EMC3/TMCO1-like / Integral membrane protein DUF106 / Protein transport Sec61-beta/Sbh / Protein transport protein SecG/Sec61-beta/Sbh / Sec61beta family / Protein translocase SEC61 complex, gamma subunit / Protein translocase SecE domain superfamily / Translocon Sec61/SecY, plug domain / Plug domain of Sec61p / Protein secE/sec61-gamma signature. / Protein secY signature 1. / Protein secY signature 2. / SecE/Sec61-gamma subunits of protein translocation complex / Protein translocase complex, SecE/Sec61-gamma subunit / SecY/SEC61-alpha family / SecY domain superfamily / SecY conserved site / SecY / Peptidase M28 / Peptidase family M28 / Ribosomal protein L6, N-terminal / Ribosomal protein L6, N-terminal domain / Ribosomal protein L30e / Ribosomal protein L2, archaeal-type / Ribosomal L15/L27a, N-terminal / Ribosomal protein L28e / Ribosomal protein L23 / Ribosomal L28e/Mak16 / Ribosomal L28e protein family / metallochaperone-like domain / TRASH domain / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein L29e / Ribosomal L29e protein family / Ribosomal protein L13e, conserved site / Ribosomal protein L13e signature. / Ribosomal protein L22e / Ribosomal protein L22e superfamily / Ribosomal L22e protein family / Ribosomal protein L10e, conserved site / Ribosomal protein L10e signature. / Ribosomal protein L27e, conserved site / Ribosomal protein L27e signature. / Ribosomal protein L10e / Ribosomal protein L38e / Ribosomal protein L38e superfamily / Ribosomal L38e protein family / Ribosomal protein L44e signature. / Ribosomal protein L24e, conserved site / Ribosomal protein L24e signature. / : / Ribosomal protein L19, eukaryotic / Ribosomal protein L19/L19e conserved site / Ribosomal protein L19e signature. / Ribosomal protein L6e signature. / Ribosomal protein L13e / Ribosomal protein L13e / 60S ribosomal protein L18a/ L20, eukaryotes / : / Ribosomal protein L44e / Ribosomal protein L44 / Ribosomal protein L34e, conserved site / Ribosomal protein L34e signature. / Ribosomal protein L5 eukaryotic, C-terminal / Ribosomal L18 C-terminal region / Ribosomal protein L30e signature 1. / 50S ribosomal protein L18Ae/60S ribosomal protein L20 and L18a / Ribosomal protein 50S-L18Ae/60S-L20/60S-L18A / Ribosomal proteins 50S-L18Ae/60S-L20/60S-L18A / Ribosomal protein L23/L25, N-terminal / : / Ribosomal protein L23, N-terminal domain / Eukaryotic Ribosomal Protein L27, KOW domain / Ribosomal protein 60S L18 and 50S L18e / Ribosomal Protein L6, KOW domain / Ribosomal protein L18/L18-A/B/e, conserved site / Ribosomal protein L18e signature. / Ribosomal protein L30e signature 2. / Ribosomal protein L27e / Ribosomal protein L27e superfamily / Ribosomal L27e protein family / Ribosomal protein L36e signature. / Ribosomal protein L35Ae, conserved site / Ribosomal protein L30e, conserved site / Ribosomal protein L35Ae signature. / Ribosomal protein L39e, conserved site / Ribosomal protein L39e signature. / : / Ribosomal protein L6e / Ribosomal protein L34Ae / Ribosomal protein L34e / 60S ribosomal protein L19
Similarity search - Domain/homology
: / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Ribosomal protein L36a / Large ribosomal subunit protein eL33 / Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL22 / Large ribosomal subunit protein eL13 ...: / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Ribosomal protein L36a / Large ribosomal subunit protein eL33 / Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL22 / Large ribosomal subunit protein eL13 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein uL6 / Large ribosomal subunit protein eL22 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein uL13 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein eL21 / Large ribosomal subunit protein eL28 / Large ribosomal subunit protein eL29 / Large ribosomal subunit protein eL34 / Large ribosomal subunit protein eL14 / Protein transport protein Sec61 subunit gamma / Protein transport protein Sec61 subunit beta / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein eL15 / Large ribosomal subunit protein eL27 / Large ribosomal subunit protein eL43 / Protein transport protein Sec61 subunit alpha isoform 1 / Large ribosomal subunit protein eL37 / Large ribosomal subunit protein eL8 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein eL30 / Large ribosomal subunit protein eL39 / Large ribosomal subunit protein eL32 / Large ribosomal subunit protein uL5 / Large ribosomal subunit protein uL2 / Small ribosomal subunit protein eS32 / Large ribosomal subunit protein eL38 / Large ribosomal subunit protein eL24 / Large ribosomal subunit protein eL19 / Large ribosomal subunit protein eL20 / Large ribosomal subunit protein eL6 / Large ribosomal subunit protein eL18 / BOS complex subunit NCLN / PAT complex subunit CCDC47 / BOS complex subunit TMEM147 / Calcium load-activated calcium channel / Large ribosomal subunit protein eL36
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.84 Å
AuthorsKeenan, R.J. / McGilvray, P.T.
Funding support United States, 5items
OrganizationGrant numberCountry
National Institutes of Health/National Eye Institute (NIH/NEI)EY026719 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM130051 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM007183 United States
National Institutes of Health/National Center for Advancing Translational Sciences (NIH/NCATS)5UL1TR002389 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)HSSN261200800001E United States
CitationJournal: Elife / Year: 2020
Title: An ER translocon for multi-pass membrane protein biogenesis.
Authors: Philip T McGilvray / S Andrei Anghel / Arunkumar Sundaram / Frank Zhong / Michael J Trnka / James R Fuller / Hong Hu / Alma L Burlingame / Robert J Keenan /
Abstract: Membrane proteins with multiple transmembrane domains play critical roles in cell physiology, but little is known about the machinery coordinating their biogenesis at the endoplasmic reticulum. Here ...Membrane proteins with multiple transmembrane domains play critical roles in cell physiology, but little is known about the machinery coordinating their biogenesis at the endoplasmic reticulum. Here we describe a ~ 360 kDa ribosome-associated complex comprising the core Sec61 channel and five accessory factors: TMCO1, CCDC47 and the Nicalin-TMEM147-NOMO complex. Cryo-electron microscopy reveals a large assembly at the ribosome exit tunnel organized around a central membrane cavity. Similar to protein-conducting channels that facilitate movement of transmembrane segments, cytosolic and luminal funnels in TMCO1 and TMEM147, respectively, suggest routes into the central membrane cavity. High-throughput mRNA sequencing shows selective translocon engagement with hundreds of different multi-pass membrane proteins. Consistent with a role in multi-pass membrane protein biogenesis, cells lacking different accessory components show reduced levels of one such client, the glutamate transporter EAAT1. These results identify a new human translocon and provide a molecular framework for understanding its role in multi-pass membrane protein biogenesis.
History
DepositionMar 17, 2020Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 2, 2020Provider: repository / Type: Initial release
Revision 1.1Nov 13, 2024Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / pdbx_entry_details / pdbx_initial_refinement_model / pdbx_modification_feature
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _pdbx_entry_details.has_protein_modification

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Structure visualization

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Assembly

Deposited unit
A: 60S ribosomal protein L8
B: 60S ribosomal protein L3
C: 60S ribosomal protein L4
D: 5.8S ribosomal RNA
E: 5S ribosomal RNA
F: 60S ribosomal protein L5
G: 60S ribosomal protein L6
H: 60S ribosomal protein L7
I: 60S ribosomal protein L7a
J: 60S ribosomal protein L9
K: 60S ribosomal protein L10
L: 60S ribosomal protein L11
M: 60S ribosomal protein L13
N: 60S ribosomal protein L14
O: 60S ribosomal protein L15
P: 60S ribosomal protein L13a
Q: 60S ribosomal protein L17
R: 60S ribosomal protein L18
S: 60S ribosomal protein L19
T: 60S ribosomal protein L18a
U: 60S ribosomal protein L21
V: 60S ribosomal protein L22
W: 60S ribosomal protein L23
X: 60S ribosomal protein L24
Y: 60S ribosomal protein L23a
Z: 60S ribosomal protein L26
a: 60S ribosomal protein L27
b: 60S ribosomal protein L27a
c: 60S ribosomal protein L29
d: 60S ribosomal protein L30
e: 60S ribosomal protein L31
f: 60S ribosomal protein L32
g: 60S ribosomal protein L35a
h: 60S ribosomal protein L34
i: 60S ribosomal protein L35
j: 60S ribosomal protein L36
k: 60S ribosomal protein L37
l: 60S ribosomal protein L38
m: 60S ribosomal protein L39
o: 60S ribosomal protein L41
p: 60S ribosomal protein L36a
q: 60S ribosomal protein L37a
r: 60S ribosomal protein L28
t: 28S ribosomal RNA
u: tRNA
v: tRNA
y: Nascent chain mixture
1: Protein transport protein Sec61 subunit alpha isoform 1
2: Protein transport protein Sec61 subunit gamma
3: Protein transport protein Sec61 subunit beta
4: Transmembrane protein 147
5: Nicalin
7: Coiled-coil domain-containing protein 47
6: Calcium load-activated calcium channel
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,349,79485
Polymers2,348,91854
Non-polymers87731
Water181
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: immunoprecipitation, Micrococcal nuclease-treated membranes from CRISPR/Cas9 engineered 3xFlag-TMCO1 (Flag) HEK293 cells were digitonin-solubilized, immunoprecipitated via the 3xFlag tag on ...Evidence: immunoprecipitation, Micrococcal nuclease-treated membranes from CRISPR/Cas9 engineered 3xFlag-TMCO1 (Flag) HEK293 cells were digitonin-solubilized, immunoprecipitated via the 3xFlag tag on TMCO1, and the eluate sedimented through a sucrose cushion to isolate the ribosome-associated fraction for analysis., mass spectrometry, The presence of TMCO1 translocon components in this sample was demonstrated by mass spectrometry and western blotting.
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area372360 Å2
ΔGint-3185 kcal/mol
Surface area798290 Å2

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Components

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60S ribosomal protein ... , 41 types, 41 molecules ABCFGHIJKLMNOPQRSTUVWXYZabcdef...

#1: Protein 60S ribosomal protein L8 / Large ribosomal subunit protein uL2


Mass: 28088.863 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62917
#2: Protein 60S ribosomal protein L3 / HIV-1 TAR RNA-binding protein B / TARBP-B / Large ribosomal subunit protein uL3


Mass: 46211.113 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P39023
#3: Protein 60S ribosomal protein L4 / 60S ribosomal protein L1 / Large ribosomal subunit protein uL4


Mass: 47804.621 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P36578
#6: Protein 60S ribosomal protein L5 / Large ribosomal subunit protein uL18


Mass: 34426.789 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46777
#7: Protein 60S ribosomal protein L6 / Large ribosomal subunit protein eL6 / Neoplasm-related protein C140 / Tax-responsive enhancer ...Large ribosomal subunit protein eL6 / Neoplasm-related protein C140 / Tax-responsive enhancer element-binding protein 107 / TaxREB107


Mass: 32810.176 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q02878
#8: Protein 60S ribosomal protein L7 / Large ribosomal subunit protein uL30


Mass: 29290.973 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P18124
#9: Protein 60S ribosomal protein L7a / Large ribosomal subunit protein eL8 / PLA-X polypeptide / Surfeit locus protein 3


Mass: 30061.785 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62424
#10: Protein 60S ribosomal protein L9 / Large ribosomal subunit protein uL6


Mass: 21899.471 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P32969
#11: Protein 60S ribosomal protein L10 / Laminin receptor homolog / Large ribosomal subunit protein uL16 / Protein QM / Ribosomal protein ...Laminin receptor homolog / Large ribosomal subunit protein uL16 / Protein QM / Ribosomal protein L10 / Tumor suppressor QM


Mass: 24657.084 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P27635
#12: Protein 60S ribosomal protein L11 / CLL-associated antigen KW-12 / Large ribosomal subunit protein uL5


Mass: 20288.465 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62913
#13: Protein 60S ribosomal protein L13 / Breast basic conserved protein 1 / Large ribosomal subunit protein eL13


Mass: 24321.682 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P26373
#14: Protein 60S ribosomal protein L14 / CAG-ISL 7 / Large ribosomal subunit protein eL14


Mass: 23485.016 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P50914
#15: Protein 60S ribosomal protein L15 / Large ribosomal subunit protein eL15


Mass: 24207.285 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61313
#16: Protein 60S ribosomal protein L13a / 23 kDa highly basic protein / Large ribosomal subunit protein uL13


Mass: 23633.412 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P40429
#17: Protein 60S ribosomal protein L17 / 60S ribosomal protein L23 / Large ribosomal subunit protein uL22 / PD-1


Mass: 21443.170 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P18621
#18: Protein 60S ribosomal protein L18 / Large ribosomal subunit protein eL18


Mass: 21687.676 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q07020
#19: Protein 60S ribosomal protein L19 / Large ribosomal subunit protein eL19


Mass: 23535.281 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P84098
#20: Protein 60S ribosomal protein L18a / Large ribosomal subunit protein eL20


Mass: 20808.514 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q02543
#21: Protein 60S ribosomal protein L21 / Large ribosomal subunit protein eL21


Mass: 18609.988 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46778
#22: Protein 60S ribosomal protein L22 / EBER-associated protein / EAP / Epstein-Barr virus small RNA-associated protein / Heparin-binding ...EBER-associated protein / EAP / Epstein-Barr virus small RNA-associated protein / Heparin-binding protein HBp15 / Large ribosomal subunit protein eL22


Mass: 14813.015 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P35268
#23: Protein 60S ribosomal protein L23


Mass: 14892.505 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#24: Protein 60S ribosomal protein L24 / 60S ribosomal protein L30 / Large ribosomal subunit protein eL24


Mass: 17825.111 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P83731
#25: Protein 60S ribosomal protein L23a / Large ribosomal subunit protein uL23


Mass: 17740.193 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62750
#26: Protein 60S ribosomal protein L26 / Large ribosomal subunit protein uL24


Mass: 17303.363 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61254
#27: Protein 60S ribosomal protein L27 / Large ribosomal subunit protein eL27


Mass: 15835.831 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61353
#28: Protein 60S ribosomal protein L27a / Large ribosomal subunit protein uL15


Mass: 16604.535 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46776
#29: Protein 60S ribosomal protein L29 / Cell surface heparin-binding protein HIP / Large ribosomal subunit protein eL29


Mass: 17804.275 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P47914
#30: Protein 60S ribosomal protein L30 / Large ribosomal subunit protein eL30


Mass: 12805.092 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62888
#31: Protein 60S ribosomal protein L31


Mass: 14494.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#32: Protein 60S ribosomal protein L32 / Large ribosomal subunit protein eL32


Mass: 15898.932 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62910
#33: Protein 60S ribosomal protein L35a / Cell growth-inhibiting gene 33 protein / Large ribosomal subunit protein eL33


Mass: 12564.743 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P18077
#34: Protein 60S ribosomal protein L34 / Large ribosomal subunit protein eL34


Mass: 13326.074 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P49207
#35: Protein 60S ribosomal protein L35 / Large ribosomal subunit protein uL29


Mass: 14593.624 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P42766
#36: Protein 60S ribosomal protein L36 / Large ribosomal subunit protein eL36


Mass: 12290.859 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y3U8
#37: Protein 60S ribosomal protein L37 / G1.16


Mass: 11111.032 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61927
#38: Protein 60S ribosomal protein L38


Mass: 8238.948 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63173
#39: Protein 60S ribosomal protein L39


Mass: 6426.759 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62891
#40: Protein/peptide 60S ribosomal protein L41 / HG12 / Large ribosomal subunit protein eL41


Mass: 3473.451 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62945
#41: Protein 60S ribosomal protein L36a


Mass: 12476.973 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: J3KQN4
#42: Protein 60S ribosomal protein L37a / Large ribosomal subunit protein eL43


Mass: 10299.350 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61513
#43: Protein 60S ribosomal protein L28 / Large ribosomal subunit protein eL28


Mass: 15784.622 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P46779

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RNA chain , 5 types, 5 molecules DEtuv

#4: RNA chain 5.8S ribosomal RNA


Mass: 50449.812 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 555853
#5: RNA chain 5S ribosomal RNA


Mass: 38385.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#44: RNA chain 28S ribosomal RNA


Mass: 1159525.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#45: RNA chain tRNA


Mass: 24414.451 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#46: RNA chain tRNA


Mass: 24436.508 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)

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Protein/peptide , 1 types, 1 molecules y

#47: Protein/peptide Nascent chain mixture


Mass: 2315.846 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)

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Protein transport protein Sec61 subunit ... , 3 types, 3 molecules 123

#48: Protein Protein transport protein Sec61 subunit alpha isoform 1 / Sec61 alpha-1


Mass: 52295.379 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61619
#49: Protein Protein transport protein Sec61 subunit gamma


Mass: 7752.325 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60059
#50: Protein Protein transport protein Sec61 subunit beta


Mass: 9987.456 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60468

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Protein , 4 types, 4 molecules 4576

#51: Protein Transmembrane protein 147 / Protein NIFIE 14


Mass: 25279.848 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9BVK8
#52: Protein Nicalin / Nicastrin-like protein


Mass: 63047.145 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q969V3
#53: Protein Coiled-coil domain-containing protein 47 / Calumin


Mass: 55946.762 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q96A33
#54: Protein Calcium load-activated calcium channel / CLAC channel / Transmembrane and coiled-coil domain-containing protein 1 / Transmembrane and coiled- ...CLAC channel / Transmembrane and coiled-coil domain-containing protein 1 / Transmembrane and coiled-coil domains protein 4 / Xenogeneic cross-immune protein PCIA3


Mass: 21205.008 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UM00

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Non-polymers , 3 types, 32 molecules

#55: Chemical...
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 28 / Source method: obtained synthetically / Formula: Mg
#56: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Zn
#57: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestN
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: human ribosome-TMCO1 translocon / Type: COMPLEX / Entity ID: #1-#54 / Source: NATURAL
Molecular weightValue: 4 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
Buffer component
IDConc.NameFormulaBuffer-ID
150 mMHEPESC8H18N2O4S1
2150 mMPotassium AcetateCH3CO2K1
35 mMMagnesium ChlorideMgCl21
40.25 percent (w/v)DigitoninC56H92O291
SpecimenConc.: 0.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: The sample was well dispersed on a thin carbon film
Specimen supportGrid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: C-flat-1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 298 K
Details: Two filter papers were added to each arm, 2.5 microliters of sample were added to the grids, and 0.5 seconds of drain time was allowed before vitrification.

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingAverage exposure time: 3.8 sec. / Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 5562

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Processing

EM software
IDNameVersionCategory
2Latitudeimage acquisition
4Gctf0.5CTF correction
7UCSF Chimera1.13.1model fitting
8Coot0.9-premodel fitting
10PHENIX1.18rc1-3777model refinement
11RELION3.1initial Euler assignment
12RELION3.1final Euler assignment
13RELION3.1classification
14RELION3.13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1049128
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.84 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 82684 / Symmetry type: POINT
Atomic model buildingSpace: REAL
Details: Starting models: 60S ribosomal subunit, tRNAs and nascent chain from 6om0. Sec61 heterotrimer from 6fti. Nicalin, TMEM147 are iTasser homology models based on 5a63. TMCO1 and CCDC47 are co- ...Details: Starting models: 60S ribosomal subunit, tRNAs and nascent chain from 6om0. Sec61 heterotrimer from 6fti. Nicalin, TMEM147 are iTasser homology models based on 5a63. TMCO1 and CCDC47 are co-evolution-based models from RaptorX-Contact.
Atomic model building

3D fitting-ID: 1 / Source name: PDB / Type: experimental model

IDPDB-IDAccession codeDetailsInitial refinement model-ID
16OM0

6om0

6OM060S ribosomal subunit, tRNAs and nascent chain1
26FTI

6fti

6FTISec61 heterotrimer2
35A63

5a63

5A63Nicalin, TMEM147 are iTasser homology models3

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