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- EMDB-48276: Cryo-EM reconstruction of PI3KC3-C1 in complex with Human RAB1A(Q70L) -

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Basic information

Entry
Database: EMDB / ID: EMD-48276
TitleCryo-EM reconstruction of PI3KC3-C1 in complex with Human RAB1A(Q70L)
Map dataComposite map, produced through VOP maximum command
Sample
  • Complex: Phosphatidylinositol-3 kinase class III complex I bound to RAB1A
    • Protein or peptide: Phosphoinositide 3-kinase regulatory subunit 4
    • Protein or peptide: Phosphatidylinositol 3-kinase catalytic subunit type 3
    • Protein or peptide: Beclin 1-associated autophagy-related key regulator
    • Protein or peptide: Beclin-1
    • Protein or peptide: Ras-related protein Rab-1A
  • Ligand: GUANOSINE-5'-TRIPHOSPHATE
  • Ligand: MAGNESIUM ION
  • Ligand: MYRISTIC ACID
  • Ligand: water
KeywordsComplex / GTPase / GTP-binding / Autophagy / Kinase / Lipid Kinase / SIGNALING PROTEIN
Function / homology
Function and homology information


extrinsic component of omegasome membrane / positive regulation of glycoprotein metabolic process / phosphatidylinositol 3-kinase inhibitor activity / extrinsic component of phagophore assembly site membrane / growth hormone secretion / nucleus-vacuole junction / cellular response to aluminum ion / positive regulation of protein lipidation / postsynaptic endosome / Toll Like Receptor 9 (TLR9) Cascade ...extrinsic component of omegasome membrane / positive regulation of glycoprotein metabolic process / phosphatidylinositol 3-kinase inhibitor activity / extrinsic component of phagophore assembly site membrane / growth hormone secretion / nucleus-vacuole junction / cellular response to aluminum ion / positive regulation of protein lipidation / postsynaptic endosome / Toll Like Receptor 9 (TLR9) Cascade / positive regulation of stress granule assembly / Synthesis of PIPs at the late endosome membrane / phosphatidylinositol 3-kinase complex, class III / cellular response to oxygen-glucose deprivation / Synthesis of PIPs at the early endosome membrane / phosphatidylinositol 3-kinase complex, class III, type II / phosphatidylinositol 3-kinase complex, class III, type I / response to mitochondrial depolarisation / presynaptic endosome / positive regulation of attachment of mitotic spindle microtubules to kinetochore / host-mediated activation of viral genome replication / COPII-coated vesicle cargo loading / mitochondria-associated endoplasmic reticulum membrane contact site / engulfment of apoptotic cell / negative regulation of lysosome organization / regulation of protein complex stability / phosphatidylinositol kinase activity / SMAD protein signal transduction / positive regulation of autophagosome assembly / phosphatidylinositol 3-kinase regulator activity / Synthesis of PIPs at the Golgi membrane / cytoplasmic side of mitochondrial outer membrane / early endosome to late endosome transport / phagophore assembly site membrane / melanosome transport / receptor catabolic process / RAB geranylgeranylation / response to L-leucine / protein targeting to lysosome / protein targeting to vacuole / late endosome to vacuole transport / endosome organization / Dengue virus modulates apoptosis / RAB GEFs exchange GTP for GDP on RABs / pexophagy / positive regulation of natural killer cell mediated cytotoxicity / Golgi Cisternae Pericentriolar Stack Reorganization / phagophore assembly site / Translation of Replicase and Assembly of the Replication Transcription Complex / vesicle transport along microtubule / COPII-mediated vesicle transport / cellular response to nitrogen starvation / phosphatidylinositol 3-kinase / phosphatidylinositol-3-phosphate biosynthetic process / COPI-dependent Golgi-to-ER retrograde traffic / 1-phosphatidylinositol-3-kinase activity / post-transcriptional regulation of gene expression / negative regulation of programmed cell death / virion assembly / response to vitamin E / transport vesicle membrane / Macroautophagy / endosome to lysosome transport / response to iron(II) ion / autophagosome membrane docking / Golgi organization / p38MAPK cascade / RSV-host interactions / cytoplasmic pattern recognition receptor signaling pathway / phosphatidylinositol phosphate biosynthetic process / negative regulation of protein phosphorylation / phosphatidylinositol-mediated signaling / autolysosome / autophagosome membrane / PI3K Cascade / autophagosome maturation / RHO GTPases Activate NADPH Oxidases / mitotic metaphase chromosome alignment / endoplasmic reticulum to Golgi vesicle-mediated transport / JNK cascade / axoneme / synaptic vesicle endocytosis / cellular defense response / cellular response to glucose starvation / mitophagy / autophagosome assembly / phosphatidylinositol 3-kinase binding / COPI-mediated anterograde transport / regulation of macroautophagy / substrate adhesion-dependent cell spreading / vesicle-mediated transport / positive regulation of intrinsic apoptotic signaling pathway / phagocytic vesicle / protein-membrane adaptor activity / endomembrane system / positive regulation of autophagy / autophagosome / cellular response to epidermal growth factor stimulus / cellular response to copper ion / cellular response to amino acid starvation
Similarity search - Function
: / UV radiation resistance protein/autophagy-related protein 14 / Vacuolar sorting 38 and autophagy-related subunit 14 / Serine/threonine-protein kinase Vps15-like / Beclin-1, BH3 domain / Beclin-1 BH3 domain, Bcl-2-interacting / Atg6/Beclin / Atg6/Beclin C-terminal domain superfamily / Atg6, BARA domain / Atg6/beclin, coiled-coil domain ...: / UV radiation resistance protein/autophagy-related protein 14 / Vacuolar sorting 38 and autophagy-related subunit 14 / Serine/threonine-protein kinase Vps15-like / Beclin-1, BH3 domain / Beclin-1 BH3 domain, Bcl-2-interacting / Atg6/Beclin / Atg6/Beclin C-terminal domain superfamily / Atg6, BARA domain / Atg6/beclin, coiled-coil domain / Apg6 BARA domain / Apg6 coiled-coil region / Phosphatidylinositol 3-kinase, Vps34 type / : / : / : / PIK3R4-like, middle domain / ARF-like small GTPases; ARF, ADP-ribosylation factor / HEAT, type 2 / HEAT repeat profile. / Small GTPase Rab domain profile. / C2 phosphatidylinositol 3-kinase-type domain / Phosphoinositide 3-kinase C2 / C2 phosphatidylinositol 3-kinase (PI3K)-type domain profile. / Phosphoinositide 3-kinase, region postulated to contain C2 domain / Phosphoinositide 3-kinase family, accessory domain (PIK domain) / Phosphoinositide 3-kinase family, accessory domain (PIK domain) / Phosphoinositide 3-kinase, accessory (PIK) domain superfamily / Phosphoinositide 3-kinase, accessory (PIK) domain / Phosphatidylinositol kinase / PIK helical domain profile. / Phosphatidylinositol 3- and 4-kinases signature 1. / Phosphatidylinositol 3/4-kinase, conserved site / Phosphatidylinositol 3- and 4-kinases signature 2. / Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily / Phosphoinositide 3-kinase, catalytic domain / Phosphatidylinositol 3- and 4-kinase / Phosphatidylinositol 3- and 4-kinases catalytic domain profile. / Phosphatidylinositol 3-/4-kinase, catalytic domain / Ran (Ras-related nuclear proteins) /TC4 subfamily of small GTPases / C2 domain superfamily / Rho (Ras homology) subfamily of Ras-like small GTPases / Ras subfamily of RAS small GTPases / Small GTPase / Ras family / Rab subfamily of small GTPases / Armadillo-like helical / Small GTP-binding protein domain / WD domain, G-beta repeat / Armadillo-type fold / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / Trp-Asp (WD) repeats signature. / Protein kinase domain / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / Serine/Threonine protein kinases, catalytic domain / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Ras-related protein Rab-1A / Beclin-1 / Beclin 1-associated autophagy-related key regulator / Phosphatidylinositol 3-kinase catalytic subunit type 3 / Phosphoinositide 3-kinase regulatory subunit 4
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.73 Å
AuthorsCook ASI / Hurley JH / Chen M
Funding support United States, 1 items
OrganizationGrant numberCountry
Aligning Science Across Parkinsons (ASAP)ASAP-000350 United States
CitationJournal: Science / Year: 2025
Title: Structural pathway for PI3-kinase regulation by VPS15 in autophagy.
Authors: Annan S I Cook / Minghao Chen / Thanh N Nguyen / Ainara Claveras Cabezudo / Grace Khuu / Shanlin Rao / Samantha N Garcia / Mingxuan Yang / Anthony T Iavarone / Xuefeng Ren / Michael Lazarou ...Authors: Annan S I Cook / Minghao Chen / Thanh N Nguyen / Ainara Claveras Cabezudo / Grace Khuu / Shanlin Rao / Samantha N Garcia / Mingxuan Yang / Anthony T Iavarone / Xuefeng Ren / Michael Lazarou / Gerhard Hummer / James H Hurley /
Abstract: The class III phosphatidylinositol-3 kinase complexes I and II (PI3KC3-C1 and PI3KC3-C2) have vital roles in macroautophagy and endosomal maturation, respectively. We elucidated a structural pathway ...The class III phosphatidylinositol-3 kinase complexes I and II (PI3KC3-C1 and PI3KC3-C2) have vital roles in macroautophagy and endosomal maturation, respectively. We elucidated a structural pathway of enzyme activation through cryo-electron microscopy analysis of PI3KC3-C1. The inactive conformation of the VPS15 pseudokinase stabilizes the inactive conformation, sequestering its -myristate in the N-lobe of the pseudokinase. Upon activation, the myristate is liberated such that the VPS34 lipid kinase catalyzes phosphatidylinositol-3 phosphate production on membranes. The VPS15 pseudokinase domain binds tightly to guanosine triphosphate and stabilizes a web of interactions to autoinhibit the cytosolic complex and promote activation upon membrane binding. These findings show in atomistic detail how the VPS34 lipid kinase is activated in the context of a complete PI3K complex.
History
DepositionDec 11, 2024-
Header (metadata) releaseFeb 12, 2025-
Map releaseFeb 12, 2025-
UpdateSep 3, 2025-
Current statusSep 3, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_48276.png

Downloads & links

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Map

FileDownload / File: emd_48276.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationComposite map, produced through VOP maximum command
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.05 Å/pix.
x 400 pix.
= 419.2 Å		1.05 Å/pix.
x 400 pix.
= 419.2 Å		1.05 Å/pix.
x 400 pix.
= 419.2 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.048 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.4
Minimum - Maximum-0.3020463 - 4.3522673
Average (Standard dev.)0.024543652 (±0.05865554)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 419.19998 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : Phosphatidylinositol-3 kinase class III complex I bound to RAB1A

EntireName: Phosphatidylinositol-3 kinase class III complex I bound to RAB1A
Components
  • Complex: Phosphatidylinositol-3 kinase class III complex I bound to RAB1A
    • Protein or peptide: Phosphoinositide 3-kinase regulatory subunit 4
    • Protein or peptide: Phosphatidylinositol 3-kinase catalytic subunit type 3
    • Protein or peptide: Beclin 1-associated autophagy-related key regulator
    • Protein or peptide: Beclin-1
    • Protein or peptide: Ras-related protein Rab-1A
  • Ligand: GUANOSINE-5'-TRIPHOSPHATE
  • Ligand: MAGNESIUM ION
  • Ligand: MYRISTIC ACID
  • Ligand: water

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Supramolecule #1: Phosphatidylinositol-3 kinase class III complex I bound to RAB1A

SupramoleculeName: Phosphatidylinositol-3 kinase class III complex I bound to RAB1A
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 384.45 KDa

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Macromolecule #1: Phosphoinositide 3-kinase regulatory subunit 4

MacromoleculeName: Phosphoinositide 3-kinase regulatory subunit 4 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: non-specific serine/threonine protein kinase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 158.808516 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MGNQLAGIAP SQILSVESYF SDIHDFEYDK SLGSTRFFKV ARAKHREGLV VVKVFAIQDP TLPLTSYKQE LEELKIRLNS AQNCLPFQK ASEKASEKAA MLFRQYVRDN LYDRISTRPF LNNIEKRWIA FQILTAVDQA HKSGVRHGDI KTENVMVTSW N WVLLTDFA ...String:
MGNQLAGIAP SQILSVESYF SDIHDFEYDK SLGSTRFFKV ARAKHREGLV VVKVFAIQDP TLPLTSYKQE LEELKIRLNS AQNCLPFQK ASEKASEKAA MLFRQYVRDN LYDRISTRPF LNNIEKRWIA FQILTAVDQA HKSGVRHGDI KTENVMVTSW N WVLLTDFA SFKPTYLPED NPADFNYFFD TSRRRTCYIA PERFVDGGMF ATELEYMRDP STPLVDLNSN QRTRGELKRA MD IFSAGCV IAELFTEGVP LFDLSQLLAY RNGHFFPEQV LNKIEDHSIR ELVTQMIHRE PDKRLEAEDY LKQQRGNAFP EIF YTFLQP YMAQFAKETF LSADERILVI RKDLGNIIHN LCGHDLPEKA EGEPKENGLV ILVSVITSCL QTLKYCDSKL AALE LILHL APRLSVEILL DRITPYLLHF SNDSVPRVRA EALRTLTKVL ALVKEVPRND INIYPEYILP GIAHLAQDDA TIVRL AYAE NIALLAETAL RFLELVQLKN LNMENDPNNE EIDEVTHPNG NYDTELQALH EMVQQKVVTL LSDPENIVKQ TLMENG ITR LCVFFGRQKA NDVLLSHMIT FLNDKNDWHL RGAFFDSIVG VAAYVGWQSS SILKPLLQQG LSDAEEFVIV KALYALT CM CQLGLLQKPH VYEFASDIAP FLCHPNLWIR YGAVGFITVV ARQISTADVY CKLMPYLDPY ITQPIIQIER KLVLLSVL K EPVSRSIFDY ALRSKDITSL FRHLHMRQKK RNGSLPDCPP PEDPAIAQLL KKLLSQGMTE EEEDKLLALK DFMMKSNKA KANIVDQSHL HDSSQKGVID LAALGITGRQ VDLVKTKQEP DDKRARKHVK QDSNVNEEWK SMFGSLDPPN MPQALPKGSD QEVIQTGKP PRSESSAGIC VPLSTSSQVP EVTTVQNKKP VIPVLSSTIL PSTYQIRITT CKTELQQLIQ QKREQCNAER I AKQMMENA EWESKPPPPG WRPKGLLVAH LHEHKSAVNR IRVSDEHSLF ATCSNDGTVK IWNSQKMEGK TTTTRSILTY SR IGGRVKT LTFCQGSHYL AIASDNGAVQ LLGIEASKLP KSPKIHPLQS RILDQKEDGC VVDMHHFNSG AQSVLAYATV NGS LVGWDL RSSSNAWTLK HDLKSGLITS FAVDIHQCWL CIGTSSGTMA CWDMRFQLPI SSHCHPSRAR IRRLSMHPLY QSWV IAAVQ GNNEVSMWDM ETGDRRFTLW ASSAPPLSEL QPSPHSVHGI YCSPADGNPI LLTAGSDMKI RFWDLAYPER SYVVA GSTS SPSVSYYRKI IEGTEVVQEI QNKQKVGPSD DTPRRGPESL PVGHHDIITD VATFQTTQGF IVTASRDGIV KVWKGT ENL YFQSGMAAWS HPQFEKGGGA RGGSGGGSWS HPQFEKGFDY KDDDDK

UniProtKB: Phosphoinositide 3-kinase regulatory subunit 4

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Macromolecule #2: Phosphatidylinositol 3-kinase catalytic subunit type 3

MacromoleculeName: Phosphatidylinositol 3-kinase catalytic subunit type 3
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: phosphatidylinositol 3-kinase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 101.680328 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MGEAEKFHYI YSCDLDINVQ LKIGSLEGKR EQKSYKAVLE DPMLKFSGLY QETCSDLYVT CQVFAEGKPL ALPVRTSYKA FSTRWNWNE WLKLPVKYPD LPRNAQVALT IWDVYGPGKA VPVGGTTVSL FGKYGMFRQG MHDLKVWPNV EADGSEPTKT P GRTSSTLS ...String:
MGEAEKFHYI YSCDLDINVQ LKIGSLEGKR EQKSYKAVLE DPMLKFSGLY QETCSDLYVT CQVFAEGKPL ALPVRTSYKA FSTRWNWNE WLKLPVKYPD LPRNAQVALT IWDVYGPGKA VPVGGTTVSL FGKYGMFRQG MHDLKVWPNV EADGSEPTKT P GRTSSTLS EDQMSRLAKL TKAHRQGHMV KVDWLDRLTF REIEMINESE KRSSNFMYLM VEFRCVKCDD KEYGIVYYEK DG DESSPIL TSFELVKVPD PQMSMENLVE SKHHKLARSL RSGPSDHDLK PNAATRDQLN IIVSYPPTKQ LTYEEQDLVW KFR YYLTNQ EKALTKFLKC VNWDLPQEAK QALELLGKWK PMDVEDSLEL LSSHYTNPTV RRYAVARLRQ ADDEDLLMYL LQLV QALKY ENFDDIKNGL EPTKKDSQSS VSENVSNSGI NSAEIDSSQI ITSPLPSVSS PPPASKTKEV PDGENLEQDL CTFLI SRAC KNSTLANYLY WYVIVECEDQ DTQQRDPKTH EMYLNVMRRF SQALLKGDKS VRVMRSLLAA QQTFVDRLVH LMKAVQ RES GNRKKKNERL QALLGDNEKM NLSDVELIPL PLEPQVKIRG IIPETATLFK SALMPAQLFF KTEDGGKYPV IFKHGDD LR QDQLILQIIS LMDKLLRKEN LDLKLTPYKV LATSTKHGFM QFIQSVPVAE VLDTEGSIQN FFRKYAPSEN GPNGISAE V MDTYVKSCAG YCVITYILGV GDRHLDNLLL TKTGKLFHID FGYILGRDPK PLPPPMKLNK EMVEGMGGTQ SEQYQEFRK QCYTAFLHLR RYSNLILNLF SLMVDANIPD IALEPDKTVK KVQDKFRLDL SDEEAVHYMQ SLIDESVHAL FAAVVEQIHK FAQYWRK

UniProtKB: Phosphatidylinositol 3-kinase catalytic subunit type 3

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Macromolecule #3: Beclin 1-associated autophagy-related key regulator

MacromoleculeName: Beclin 1-associated autophagy-related key regulator / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 55.387266 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MASPSGKGAR ALEAPGCGPR PLARDLVDSV DDAEGLYVAV ERCPLCNTTR RRLTCAKCVQ SGDFVYFDGR DRERFIDKKE RLSRLKSKQ EEFQKEVLKA MEGKWITDQL RWKIMSCKMR IEQLKQTICK GNEEMEKNSE GLLKTKEKNQ KLYSRAQRHQ E KKEKIQRH ...String:
MASPSGKGAR ALEAPGCGPR PLARDLVDSV DDAEGLYVAV ERCPLCNTTR RRLTCAKCVQ SGDFVYFDGR DRERFIDKKE RLSRLKSKQ EEFQKEVLKA MEGKWITDQL RWKIMSCKMR IEQLKQTICK GNEEMEKNSE GLLKTKEKNQ KLYSRAQRHQ E KKEKIQRH NRKLGDLVEK KTIDLRSHYE RLANLRRSHI LELTSVIFPI EEVKTGVRDP ADVSSESDSA MTSSTVSKLA EA RRTTYLS GRWVCDDHNG DTSISITGPW ISLPNNGDYS AYYSWVEEKK TTQGPDMEQS NPAYTISAAL CYATQLVNIL SHI LDVNLP KKLCNSEFCG ENLSKQKFTR AVKKLNANIL YLCFSQHVNL DQLQPLHTLR NLMYLVSPSS EHLGRSGPFE VRAD LEESM EFVDPGVAGE SDESGDERVS DEETDLGTDW ENLPSPRFCD IPSQSVEVSQ SQSTQASPPI ASSSAGGMIS SAAAS VTSW FKAYTGHR

UniProtKB: Beclin 1-associated autophagy-related key regulator

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Macromolecule #4: Beclin-1

MacromoleculeName: Beclin-1 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 51.953102 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MEGSKTSNNS TMQVSFVCQR CSQPLKLDTS FKILDRVTIQ ELTAPLLTTA QAKPGETQEE ETNSGEEPFI ETPRQDGVSR RFIPPARMM STESANSFTL IGEASDGGTM ENLSRRLKVT GDLFDIMSGQ TDVDHPLCEE CTDTLLDQLD TQLNVTENEC Q NYKRCLEI ...String:
MEGSKTSNNS TMQVSFVCQR CSQPLKLDTS FKILDRVTIQ ELTAPLLTTA QAKPGETQEE ETNSGEEPFI ETPRQDGVSR RFIPPARMM STESANSFTL IGEASDGGTM ENLSRRLKVT GDLFDIMSGQ TDVDHPLCEE CTDTLLDQLD TQLNVTENEC Q NYKRCLEI LEQMNEDDSE QLQMELKELA LEEERLIQEL EDVEKNRKIV AENLEKVQAE AERLDQEEAQ YQREYSEFKR QQ LELDDEL KSVENQMRYA QTQLDKLKKT NVFNATFHIW HSGQFGTINN FRLGRLPSVP VEWNEINAAW GQTVLLLHAL ANK MGLKFQ RYRLVPYGNH SYLESLTDKS KELPLYCSGG LRFFWDNKFD HAMVAFLDCV QQFKEEVEKG ETRFCLPYRM DVEK GKIED TGGSGGSYSI KTQFNSEEQW TKALKFMLTN LKWGLAWVSS QFYNK

UniProtKB: Beclin-1

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Macromolecule #5: Ras-related protein Rab-1A

MacromoleculeName: Ras-related protein Rab-1A / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO / EC number: small monomeric GTPase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 25.206527 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MKSSHHHHHH ENLYFQSNAM GMSSMNPEYD YLFKLLLIGD SGVGKSCLLL RFADDTYTES YISTIGVDFK IRTIELDGKT IKLQIWDTA GLERFRTITS SYYRGAHGII VVYDVTDQES FNNVKQWLQE IDRYASENVN KLLVGNKCDL TTKKVVDYTT A KEFADSLG ...String:
MKSSHHHHHH ENLYFQSNAM GMSSMNPEYD YLFKLLLIGD SGVGKSCLLL RFADDTYTES YISTIGVDFK IRTIELDGKT IKLQIWDTA GLERFRTITS SYYRGAHGII VVYDVTDQES FNNVKQWLQE IDRYASENVN KLLVGNKCDL TTKKVVDYTT A KEFADSLG IPFLETSAKN ATNVEQSFMT MAAEIKKRMG PGATAGGAEK SNVKIQSTPV KQSGGGCC

UniProtKB: Ras-related protein Rab-1A

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Macromolecule #6: GUANOSINE-5'-TRIPHOSPHATE

MacromoleculeName: GUANOSINE-5'-TRIPHOSPHATE / type: ligand / ID: 6 / Number of copies: 2 / Formula: GTP
Molecular weightTheoretical: 523.18 Da
Chemical component information

ChemComp-GTP:
GUANOSINE-5'-TRIPHOSPHATE / GTP, energy-carrying molecule*YM

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Macromolecule #7: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 7 / Number of copies: 2 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #8: MYRISTIC ACID

MacromoleculeName: MYRISTIC ACID / type: ligand / ID: 8 / Number of copies: 1 / Formula: MYR
Molecular weightTheoretical: 228.371 Da
Chemical component information

ChemComp-MYR:
MYRISTIC ACID

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Macromolecule #9: water

MacromoleculeName: water / type: ligand / ID: 9 / Number of copies: 9 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration0.2 mg/mL
BufferpH: 7.4
Component:
ConcentrationFormulaName
25.0 mMC8H18N2O4SHEPES
200.0 mMNaClsodium chloride
2.0 mMMgCl2Magnesium chloride
1.0 mMC9H15O6PTCEP
GridModel: Quantifoil Active R2/1 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Details: 25 mA
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Specialist opticsEnergy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number real images: 19300 / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 81000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: NONE
Startup modelType of model: INSILICO MODEL
Final reconstructionNumber classes used: 1 / Resolution.type: BY AUTHOR / Resolution: 2.73 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 3.3.1) / Number images used: 721454
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 3.3.1)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 3.3.1)
Final 3D classificationNumber classes: 4 / Software - Name: cryoSPARC (ver. 3.3.1)

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Atomic model buiding 1

Initial modelChain - Source name: AlphaFold / Chain - Initial model type: in silico model
SoftwareName: ISOLDE (ver. 1.7)
RefinementSpace: REAL / Protocol: FLEXIBLE FIT
Output model

PDB-9mhf:
Cryo-EM reconstruction of PI3KC3-C1 in complex with Human RAB1A(Q70L)

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Jul 12, 2017. Major update of PDB

Major update of PDB

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External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

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Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

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