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- PDB-3jbv: Mechanisms of Ribosome Stalling by SecM at Multiple Elongation Steps -

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Basic information

Entry
Database: PDB / ID: 3jbv
TitleMechanisms of Ribosome Stalling by SecM at Multiple Elongation Steps
Components
  • (30S ribosomal protein ...) x 20
  • (50S ribosomal protein ...) x 29
  • RNA (118-MER)
  • RNA (1530-MER)
  • RNA (2903-MER)
  • RNA (5'-R(P*CP*UP*GP*GP*CP*CP*CP*UP*CP*AP*A)-3')
  • RNA (75-MER)
  • RNA (76-MER)
  • Secretion monitor
KeywordsRIBOSOME / single particle analysis / ribosome stalling
Function / homology
Function and homology information


stringent response / mRNA base-pairing translational repressor activity / ornithine decarboxylase inhibitor activity / misfolded RNA binding / transcription antitermination factor activity, RNA binding / Group I intron splicing / translation regulator activity / RNA folding / transcriptional attenuation / endoribonuclease inhibitor activity ...stringent response / mRNA base-pairing translational repressor activity / ornithine decarboxylase inhibitor activity / misfolded RNA binding / transcription antitermination factor activity, RNA binding / Group I intron splicing / translation regulator activity / RNA folding / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / translational termination / DnaA-L2 complex / four-way junction DNA binding / translation repressor activity / negative regulation of translational initiation / negative regulation of DNA-templated DNA replication initiation / regulation of mRNA stability / ribosome assembly / mRNA regulatory element binding translation repressor activity / response to reactive oxygen species / assembly of large subunit precursor of preribosome / transcription elongation factor complex / positive regulation of RNA splicing / DNA endonuclease activity / : / cytosolic ribosome assembly / regulation of DNA-templated transcription elongation / transcription antitermination / regulation of cell growth / maintenance of translational fidelity / DNA-templated transcription termination / response to radiation / mRNA 5'-UTR binding / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / ribosomal small subunit assembly / ribosomal large subunit assembly / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / ribosome binding / large ribosomal subunit / ribosome biogenesis / regulation of translation / small ribosomal subunit / 5S rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / transferase activity / tRNA binding / negative regulation of translation / periplasmic space / rRNA binding / molecular adaptor activity / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / response to antibiotic / mRNA binding / negative regulation of DNA-templated transcription / DNA binding / RNA binding / zinc ion binding / membrane / cytosol / cytoplasm
Similarity search - Function
Secretion monitor / Secretion monitor precursor protein (SecM) / Ribosomal protein S21, conserved site / Ribosomal protein S21 signature. / Ribosomal protein L25, short-form / Ribosomal protein S14, bacterial/plastid / Ribosomal protein L11, bacterial-type / Ribosomal protein S21 superfamily / Ribosomal protein S21 / Ribosomal protein S16, conserved site ...Secretion monitor / Secretion monitor precursor protein (SecM) / Ribosomal protein S21, conserved site / Ribosomal protein S21 signature. / Ribosomal protein L25, short-form / Ribosomal protein S14, bacterial/plastid / Ribosomal protein L11, bacterial-type / Ribosomal protein S21 superfamily / Ribosomal protein S21 / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Ribosomal protein S21 / Ribosomal protein L11, conserved site / Ribosomal protein L21, conserved site / Ribosomal protein L21 signature. / Ribosomal protein L11 signature. / Ribosomal protein L16 signature 1. / : / Ribosomal protein L6, conserved site / Ribosomal protein L6 signature 1. / Ribosomal protein L16, conserved site / Ribosomal protein L16 signature 2. / Ribosomal protein L11, N-terminal / Ribosomal protein L17 signature. / Ribosomal protein L9 signature. / Ribosomal protein L9, bacteria/chloroplast / Ribosomal protein L9, C-terminal / Ribosomal protein L9, C-terminal domain / Ribosomal protein L9, C-terminal domain superfamily / Ribosomal protein L11/L12 / Ribosomal protein L11, C-terminal / Ribosomal protein L11, C-terminal domain superfamily / Ribosomal protein L11/L12, N-terminal domain superfamily / Ribosomal protein L11/L12 / Ribosomal protein L11, N-terminal domain / Ribosomal protein L11, RNA binding domain / Ribosomal L25p family / Ribosomal protein L25 / Ribosomal protein L28/L24 superfamily / Ribosomal protein L36 signature. / Ribosomal protein L25/Gln-tRNA synthetase, N-terminal / Ribosomal protein L32p, bacterial type / Ribosomal protein L25/Gln-tRNA synthetase, anti-codon-binding domain superfamily / Ribosomal protein L9, N-terminal domain superfamily / Ribosomal protein L9 / Ribosomal protein L9, N-terminal / Ribosomal protein L9, N-terminal domain / Ribosomal protein L28 / Ribosomal protein L35, conserved site / Ribosomal protein L35 signature. / Ribosomal protein L33, conserved site / Ribosomal protein L33 signature. / Ribosomal protein L35, non-mitochondrial / Ribosomal protein L5, bacterial-type / Ribosomal protein L6, bacterial-type / Ribosomal protein L18, bacterial-type / Ribosomal protein L19, conserved site / Ribosomal protein L19 signature. / Ribosomal protein L36 / Ribosomal protein L36 superfamily / Ribosomal protein L36 / Ribosomal protein L9/RNase H1, N-terminal / Ribosomal protein L20 signature. / Ribosomal protein S3, bacterial-type / Ribosomal protein L27, conserved site / Ribosomal protein S6, conserved site / Ribosomal protein L27 signature. / Ribosomal protein S6 signature. / Ribosomal protein S19, bacterial-type / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S11, bacterial-type / Ribosomal protein S13, bacterial-type / Ribosomal protein S20 / Ribosomal protein S20 superfamily / Ribosomal protein S20 / Ribosomal protein S9, bacterial/plastid / Ribosomal protein L14P, bacterial-type / Ribosomal protein S4, bacterial-type / Ribosomal protein L34, conserved site / Ribosomal protein L34 signature. / 30S ribosomal protein S17 / Ribosomal protein S5, bacterial-type / Ribosomal protein L22, bacterial/chloroplast-type / Ribosomal protein S6, plastid/chloroplast / Ribosomal protein L35 / Ribosomal protein L35 superfamily / Ribosomal protein L2, bacterial/organellar-type / Ribosomal protein L35 / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal L28 family / Ribosomal protein L33 / Ribosomal protein L33 / Ribosomal protein L28/L24 / Ribosomal protein L33 superfamily / : / Ribosomal protein L30, bacterial-type / Ribosomal protein L16 / Ribosomal protein L18 / Ribosomal L18 of archaea, bacteria, mitoch. and chloroplast / Ribosomal protein S18, conserved site
Similarity search - Domain/homology
CHLORAMPHENICOL / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Large ribosomal subunit protein uL15 ...CHLORAMPHENICOL / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL11 / Large ribosomal subunit protein bL19 / Large ribosomal subunit protein bL20 / Large ribosomal subunit protein bL27 / Large ribosomal subunit protein bL28 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein bL32 / Large ribosomal subunit protein bL33 / Large ribosomal subunit protein bL34 / Large ribosomal subunit protein bL35 / Large ribosomal subunit protein bL36A / Large ribosomal subunit protein bL9 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein bS16 / Small ribosomal subunit protein bS18 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein bS20 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS9 / Large ribosomal subunit protein uL13 / Large ribosomal subunit protein uL14 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein uL23 / Small ribosomal subunit protein uS15 / Large ribosomal subunit protein bL17 / Large ribosomal subunit protein bL21 / Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL6 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS17 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein uL2 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL22 / Secretion monitor / Large ribosomal subunit protein uL5 / Small ribosomal subunit protein bS21 / Large ribosomal subunit protein bL25 / Small ribosomal subunit protein uS15
Similarity search - Component
Biological speciesEscherichia coli K-12 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.32 Å
AuthorsZhang, J. / Pan, X.J. / Yan, K.G. / Sun, S. / Gao, N. / Sui, S.F.
CitationJournal: Elife / Year: 2015
Title: Mechanisms of ribosome stalling by SecM at multiple elongation steps.
Authors: Jun Zhang / Xijiang Pan / Kaige Yan / Shan Sun / Ning Gao / Sen-Fang Sui /
Abstract: Regulation of translating ribosomes is a major component of gene expression control network. In Escherichia coli, ribosome stalling by the C-terminal arrest sequence of SecM regulates the SecA- ...Regulation of translating ribosomes is a major component of gene expression control network. In Escherichia coli, ribosome stalling by the C-terminal arrest sequence of SecM regulates the SecA-dependent secretion pathway. Previous studies reported many residues of SecM peptide and ribosome exit tunnel are critical for stalling. However, the underlying molecular mechanism is still not clear at the atomic level. Here, we present two cryo-EM structures of the SecM-stalled ribosomes at 3.3-3.7 Å resolution, which reveal two different stalling mechanisms at distinct elongation steps of the translation cycle: one is due to the inactivation of ribosomal peptidyl-transferase center which inhibits peptide bond formation with the incoming prolyl-tRNA; the other is the prolonged residence of the peptidyl-RNA at the hybrid A/P site which inhibits the full-scale tRNA translocation. These results demonstrate an elegant control of translation cycle by regulatory peptides through a continuous, dynamic reshaping of the functional center of the ribosome.
History
DepositionOct 16, 2015Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Jan 27, 2016Provider: repository / Type: Initial release
Revision 1.1Feb 8, 2017Group: Database references
Revision 1.2Jun 6, 2018Group: Data collection / Database references ...Data collection / Database references / Other / Source and taxonomy / Structure summary
Category: cell / database_2 ...cell / database_2 / em_image_scans / em_software / entity / entity_src_nat / pdbx_entity_src_syn
Item: _cell.length_a / _cell.length_b ..._cell.length_a / _cell.length_b / _cell.length_c / _em_software.name / _entity.src_method
Revision 1.3Jul 18, 2018Group: Data collection / Database references / Category: struct_ref_seq_dif / Item: _struct_ref_seq_dif.details
Revision 1.4Dec 18, 2019Group: Data collection / Category: em_software
Item: _em_software.fitting_id / _em_software.image_processing_id
Revision 1.5Dec 27, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description / Source and taxonomy / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / entity / entity_name_com / entity_src_nat / pdbx_initial_refinement_model / struct_ref / struct_ref_seq / struct_ref_seq_dif / struct_site
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 / _entity.pdbx_description / _entity_src_nat.pdbx_beg_seq_num / _entity_src_nat.pdbx_end_seq_num / _struct_ref_seq_dif.align_id / _struct_ref_seq_dif.db_mon_id / _struct_ref_seq_dif.mon_id / _struct_ref_seq_dif.pdbx_auth_seq_num / _struct_ref_seq_dif.pdbx_pdb_strand_id / _struct_ref_seq_dif.pdbx_seq_db_accession_code / _struct_ref_seq_dif.pdbx_seq_db_seq_num / _struct_ref_seq_dif.seq_num / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Assembly

Deposited unit
A: RNA (1530-MER)
B: 30S ribosomal protein S2
C: 30S ribosomal protein S3
D: 30S ribosomal protein S4
E: 30S ribosomal protein S5
F: 30S ribosomal protein S6
G: 30S ribosomal protein S7
H: 30S ribosomal protein S8
I: 30S ribosomal protein S9
J: 30S ribosomal protein S10
K: 30S ribosomal protein S11
L: 30S ribosomal protein S12
M: 30S ribosomal protein S13
N: 30S ribosomal protein S14
O: 30S ribosomal protein S15
P: 30S ribosomal protein S16
Q: 30S ribosomal protein S17
R: 30S ribosomal protein S18
S: 30S ribosomal protein S19
T: 30S ribosomal protein S20
U: 30S ribosomal protein S21
V: RNA (76-MER)
W: RNA (75-MER)
X: RNA (5'-R(P*CP*UP*GP*GP*CP*CP*CP*UP*CP*AP*A)-3')
0: 50S ribosomal protein L28
1: 50S ribosomal protein L29
2: 50S ribosomal protein L30
3: 50S ribosomal protein L32
4: 50S ribosomal protein L33
6: 50S ribosomal protein L34
7: 50S ribosomal protein L35
8: 50S ribosomal protein L36
a: RNA (118-MER)
b: RNA (2903-MER)
c: 50S ribosomal protein L2
i: 50S ribosomal protein L11
d: 50S ribosomal protein L3
e: 50S ribosomal protein L4
f: 50S ribosomal protein L5
g: 50S ribosomal protein L6
h: 50S ribosomal protein L9
j: 50S ribosomal protein L13
k: 50S ribosomal protein L14
l: 50S ribosomal protein L15
m: 50S ribosomal protein L16
n: 50S ribosomal protein L17
o: 50S ribosomal protein L18
p: 50S ribosomal protein L19
q: 50S ribosomal protein L20
r: 50S ribosomal protein L21
s: 50S ribosomal protein L22
t: 50S ribosomal protein L23
u: 50S ribosomal protein L24
w: 50S ribosomal protein L25
y: 50S ribosomal protein L27
z: Secretion monitor
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,199,60157
Polymers2,199,27856
Non-polymers3231
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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RNA chain , 6 types, 6 molecules AVWXab

#1: RNA chain RNA (1530-MER)


Mass: 499690.031 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: GenBank: 1789840096
#22: RNA chain RNA (76-MER)


Mass: 24501.539 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria)
#23: RNA chain RNA (75-MER)


Mass: 24186.365 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria)
#24: RNA chain RNA (5'-R(P*CP*UP*GP*GP*CP*CP*CP*UP*CP*AP*A)-3')


Mass: 3442.106 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria)
#33: RNA chain RNA (118-MER)


Mass: 38790.090 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria)
#34: RNA chain RNA (2903-MER)


Mass: 941612.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria)

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30S ribosomal protein ... , 20 types, 20 molecules BCDEFGHIJKLMNOPQRSTU

#2: Protein 30S ribosomal protein S2 / / Small ribosomal subunit protein uS2


Mass: 26781.670 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7V0
#3: Protein 30S ribosomal protein S3 / / Small ribosomal subunit protein uS3


Mass: 26031.316 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7V3
#4: Protein 30S ribosomal protein S4 / / Small ribosomal subunit protein uS4


Mass: 23514.199 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7V8
#5: Protein 30S ribosomal protein S5 / / Small ribosomal subunit protein uS5


Mass: 17629.398 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7W1
#6: Protein 30S ribosomal protein S6 / / Small ribosomal subunit protein bS6


Mass: 15197.032 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P02358
#7: Protein 30S ribosomal protein S7 / / Small ribosomal subunit protein uS7


Mass: 17637.445 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: C4ZUJ6, UniProt: P02359*PLUS
#8: Protein 30S ribosomal protein S8 / / Small ribosomal subunit protein uS8


Mass: 14146.557 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7W7
#9: Protein 30S ribosomal protein S9 / / Small ribosomal subunit protein uS9


Mass: 14886.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7X3
#10: Protein 30S ribosomal protein S10 / / Small ribosomal subunit protein uS10


Mass: 11755.597 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7R5
#11: Protein 30S ribosomal protein S11 / / Small ribosomal subunit protein uS11


Mass: 13870.975 Da / Num. of mol.: 1 / Fragment: UNP residues 1-131 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7R9
#12: Protein 30S ribosomal protein S12 / / Small ribosomal subunit protein uS12


Mass: 13768.157 Da / Num. of mol.: 1 / Fragment: UNP residues 1-156 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7S3
#13: Protein 30S ribosomal protein S13 / / Small ribosomal subunit protein uS13


Mass: 13128.467 Da / Num. of mol.: 1 / Fragment: UNP residues 1-120 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7S9
#14: Protein 30S ribosomal protein S14 / / Small ribosomal subunit protein uS14


Mass: 11606.560 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG59
#15: Protein 30S ribosomal protein S15 / / Small ribosomal subunit protein uS15


Mass: 10319.882 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: Q8X9M2, UniProt: P0ADZ4*PLUS
#16: Protein 30S ribosomal protein S16 / / Small ribosomal subunit protein bS16


Mass: 9207.572 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7T3
#17: Protein 30S ribosomal protein S17 / / Small ribosomal subunit protein uS17


Mass: 9724.491 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG63
#18: Protein 30S ribosomal protein S18 / / Small ribosomal subunit protein bS18


Mass: 9005.472 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7T7
#19: Protein 30S ribosomal protein S19 / / Small ribosomal subunit protein uS19


Mass: 10455.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7U3
#20: Protein 30S ribosomal protein S20 / / Small ribosomal subunit protein bS20


Mass: 9708.464 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7U7
#21: Protein 30S ribosomal protein S21 / / Small ribosomal subunit protein bS21


Mass: 8524.039 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P68679

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50S ribosomal protein ... , 29 types, 29 molecules 01234678cidefghjklmnopqrstuwy

#25: Protein 50S ribosomal protein L28 / / Large ribosomal subunit protein bL28


Mass: 9027.551 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7M2
#26: Protein 50S ribosomal protein L29 / / Large ribosomal subunit protein uL29


Mass: 7286.464 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7M6
#27: Protein 50S ribosomal protein L30 / / Large ribosomal subunit protein uL30


Mass: 6554.820 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG51
#28: Protein 50S ribosomal protein L32 / / Large ribosomal subunit protein bL32


Mass: 6463.445 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7N4
#29: Protein 50S ribosomal protein L33 / / Large ribosomal subunit protein bL33


Mass: 6388.631 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7N9
#30: Protein/peptide 50S ribosomal protein L34 / / Large ribosomal subunit protein bL34


Mass: 5397.463 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7P5
#31: Protein 50S ribosomal protein L35 / / Large ribosomal subunit protein bL35 / Ribosomal protein A


Mass: 7313.032 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7Q1
#32: Protein/peptide 50S ribosomal protein L36 / / Large ribosomal subunit protein bL36-A / Ribosomal protein B


Mass: 4377.390 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7Q6
#35: Protein 50S ribosomal protein L2 / / Large ribosomal subunit protein uL2


Mass: 29923.619 Da / Num. of mol.: 1 / Fragment: UNP residues 1-232 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60422
#36: Protein 50S ribosomal protein L11 / / Large ribosomal subunit protein uL11


Mass: 14894.362 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7J7
#37: Protein 50S ribosomal protein L3 / / Large ribosomal subunit protein uL3


Mass: 22277.535 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60438
#38: Protein 50S ribosomal protein L4 / / Large ribosomal subunit protein uL4


Mass: 22121.566 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60723
#39: Protein 50S ribosomal protein L5 / / Large ribosomal subunit protein uL5


Mass: 20333.611 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P62399
#40: Protein 50S ribosomal protein L6 / / Large ribosomal subunit protein uL6


Mass: 18932.791 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG55
#41: Protein 50S ribosomal protein L9 / / Large ribosomal subunit protein bL9


Mass: 15789.020 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7R1
#42: Protein 50S ribosomal protein L13 / / Large ribosomal subunit protein uL13


Mass: 16050.606 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AA10
#43: Protein 50S ribosomal protein L14 / / Large ribosomal subunit protein uL14


Mass: 13565.067 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0ADY3
#44: Protein 50S ribosomal protein L15 /


Mass: 15008.471 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P02413
#45: Protein 50S ribosomal protein L16 / / Large ribosomal subunit protein uL16


Mass: 15312.269 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0ADY7
#46: Protein 50S ribosomal protein L17 / / Large ribosomal subunit protein bL17


Mass: 14393.657 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG44
#47: Protein 50S ribosomal protein L18 / / Large ribosomal subunit protein uL18


Mass: 12794.668 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0C018
#48: Protein 50S ribosomal protein L19 / / Large ribosomal subunit protein bL19


Mass: 13159.278 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7K6
#49: Protein 50S ribosomal protein L20 / / Large ribosomal subunit protein bL20


Mass: 13528.024 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7L3
#50: Protein 50S ribosomal protein L21 / / Large ribosomal subunit protein bL21


Mass: 11586.374 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0AG48
#51: Protein 50S ribosomal protein L22 / / Large ribosomal subunit protein uL22


Mass: 12253.359 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P61175
#52: Protein 50S ribosomal protein L23 / / Large ribosomal subunit protein uL23


Mass: 11222.160 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0ADZ0
#53: Protein 50S ribosomal protein L24 / / Large ribosomal subunit protein uL24


Mass: 11339.250 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P60624
#54: Protein 50S ribosomal protein L25 / / Large ribosomal subunit protein bL25


Mass: 10713.465 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P68919
#55: Protein 50S ribosomal protein L27 / / Large ribosomal subunit protein bL27


Mass: 9146.540 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P0A7L8

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Protein/peptide / Non-polymers , 2 types, 2 molecules z

#56: Protein/peptide Secretion monitor


Mass: 3002.334 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli K-12 (bacteria) / References: UniProt: P62395*PLUS
#57: Chemical ChemComp-CLM / CHLORAMPHENICOL / Chloramphenicol


Mass: 323.129 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C11H12Cl2N2O5 / Comment: antibiotic*YM

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Details

Sequence detailsTHE SEQUENCE OF THE CHAIN Z (ENTITY 56, UNCAPITALIZED Z) WAS NOT AVAILABLE AT THE UNIPROT ...THE SEQUENCE OF THE CHAIN Z (ENTITY 56, UNCAPITALIZED Z) WAS NOT AVAILABLE AT THE UNIPROT KNOWLEDGEBASE DATABASE (UNIPROTKB) AT THE TIME OF DEPOSITION. AUTHORS STATE THAT THE CHAIN Z (ENTITY 56) IS EXPRESSED BASED ON EXPRESSION TAGS, MASWSHPQFEKGGGARGGSGGGSWSHPQFEKGFENLYFQGMKKTAIAIAVALAGFATVAQAEQKLISEEDLFS.

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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: SecM-Pro-RNC / Type: RIBOSOME
Buffer solutionName: 20mM HEPES, 50mM KOAc, 6mM Mg(OAc)2, 1mM DTT, 500 ug/ml chloramphenicol,0.05% Nikkol,0.5% pill/ml Complete EDTA-free Protease inhibitor cocktail,0.1 U/ml RNasin and 125mM sucrose
pH: 7
Details: 20mM HEPES, 50mM KOAc, 6mM Mg(OAc)2, 1mM DTT, 500 ug/ml chloramphenicol,0.05% Nikkol,0.5% pill/ml Complete EDTA-free Protease inhibitor cocktail,0.1 U/ml RNasin and 125mM sucrose
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: Sample are made by Cryo-EM on the holy carbon
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS / Date: May 8, 2014
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 22500 X / Calibrated magnification: 37878 X / Nominal defocus max: 1000 nm / Nominal defocus min: 3500 nm / Cs: 2.7 mm
Image recordingElectron dose: 16 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

EM software
IDNameCategory
1Cootmodel fitting
2EMfitmodel fitting
3UCSF Chimeramodel fitting
4RELION3D reconstruction
CTF correctionDetails: CTFFIND
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionMethod: REFERENCE-BASED RECONSTRUCTION / Resolution: 3.32 Å / Num. of particles: 60354 / Nominal pixel size: 1.32 Å / Actual pixel size: 1.31 Å / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: RECIPROCAL / Details: METHOD--FLEXIBLE
Atomic model buildingPDB-ID: 4V7T

4v7t


Accession code: 4V7T / Source name: PDB / Type: experimental model
Refinement stepCycle: LAST
ProteinNucleic acidLigandSolventTotal
Num. atoms44783 101108 20 0 145911

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