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- EMDB-10497: CryoEM structure of the binary DOCK2-ELMO1 complex -

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Basic information

Entry
Database: EMDB / ID: EMD-10497
TitleCryoEM structure of the binary DOCK2-ELMO1 complex
Map data
Sample
  • Complex: Binary complex of DOCK2-ELMO1
    • Protein or peptide: Dedicator of cytokinesis protein 2
    • Protein or peptide: Engulfment and cell motility protein 1ELMO1
Function / homology
Function and homology information


membrane raft polarization / alpha-beta T cell proliferation / myeloid dendritic cell activation involved in immune response / establishment of T cell polarity / macropinocytosis / immunological synapse formation / negative thymic T cell selection / guanyl-nucleotide exchange factor complex / myoblast fusion / positive thymic T cell selection ...membrane raft polarization / alpha-beta T cell proliferation / myeloid dendritic cell activation involved in immune response / establishment of T cell polarity / macropinocytosis / immunological synapse formation / negative thymic T cell selection / guanyl-nucleotide exchange factor complex / myoblast fusion / positive thymic T cell selection / Nef and signal transduction / regulation of small GTPase mediated signal transduction / phagocytosis, engulfment / small GTPase-mediated signal transduction / Rac protein signal transduction / RHOG GTPase cycle / RHOA GTPase cycle / RAC2 GTPase cycle / PTK6 Regulates RHO GTPases, RAS GTPase and MAP kinases / positive regulation of phagocytosis / RAC1 GTPase cycle / T cell receptor binding / GTPase activator activity / guanyl-nucleotide exchange factor activity / actin filament organization / cell motility / FCGR3A-mediated phagocytosis / Regulation of actin dynamics for phagocytic cup formation / small GTPase binding / SH3 domain binding / VEGFA-VEGFR2 Pathway / specific granule lumen / chemotaxis / cell migration / Factors involved in megakaryocyte development and platelet production / actin cytoskeleton organization / cytoskeleton / apoptotic process / Neutrophil degranulation / extracellular exosome / extracellular region / membrane / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Dedicator of cytokinesis protein 2 / Dedicator of cytokinesis, N-terminal domain / Dedicator of cytokinesis, N-terminal, subdomain 1 / DOCK N-terminus / ELMO domain / ELMO/CED-12 family / ELMO domain profile. / ELMO, armadillo-like helical domain / ELMO, armadillo-like helical domain / DOCKER, Lobe A ...Dedicator of cytokinesis protein 2 / Dedicator of cytokinesis, N-terminal domain / Dedicator of cytokinesis, N-terminal, subdomain 1 / DOCK N-terminus / ELMO domain / ELMO/CED-12 family / ELMO domain profile. / ELMO, armadillo-like helical domain / ELMO, armadillo-like helical domain / DOCKER, Lobe A / DOCKER, Lobe B / DOCKER, Lobe C / DHR-2, Lobe C / DHR-2, Lobe B / Dedicator of cytokinesis / C2 DOCK-type domain / DOCKER domain / Dedicator of cytokinesis, C-terminal, lobe A / Dedicator of cytokinesis, C-terminal, lobe C / DHR-2, Lobe A / C2 domain in Dock180 and Zizimin proteins / C2 DOCK-type domain profile. / DOCKER domain profile. / Pleckstrin homology domain / Variant SH3 domain / C2 domain superfamily / Pleckstrin homology domain / Src homology 3 domains / SH3-like domain superfamily / Src homology 3 (SH3) domain profile. / SH3 domain / Armadillo-like helical / PH-like domain superfamily / Armadillo-type fold
Similarity search - Domain/homology
Engulfment and cell motility protein 1 / Dedicator of cytokinesis protein 2
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 5.5 Å
AuthorsChang L / Yang J / Chang JH / Zhang Z / Boland A / McLaughlin SH / Abu-Thuraia A / Killoran RC / Smith MJ / Cote JF / Barford D
Funding support United Kingdom, 3 items
OrganizationGrant numberCountry
Medical Research Council (United Kingdom)MC_UP_1201/6 United Kingdom
Marie Sklodowska-Curie Actions, FragNET ITN657725 United Kingdom
Cancer Research UKC576/A14109 United Kingdom
CitationJournal: Nat Commun / Year: 2020
Title: Structure of the DOCK2-ELMO1 complex provides insights into regulation of the auto-inhibited state.
Authors: Leifu Chang / Jing Yang / Chang Hwa Jo / Andreas Boland / Ziguo Zhang / Stephen H McLaughlin / Afnan Abu-Thuraia / Ryan C Killoran / Matthew J Smith / Jean-Francois Côté / David Barford /
Abstract: DOCK (dedicator of cytokinesis) proteins are multidomain guanine nucleotide exchange factors (GEFs) for RHO GTPases that regulate intracellular actin dynamics. DOCK proteins share catalytic (DOCK) ...DOCK (dedicator of cytokinesis) proteins are multidomain guanine nucleotide exchange factors (GEFs) for RHO GTPases that regulate intracellular actin dynamics. DOCK proteins share catalytic (DOCK) and membrane-associated (DOCK) domains. The structurally-related DOCK1 and DOCK2 GEFs are specific for RAC, and require ELMO (engulfment and cell motility) proteins for function. The N-terminal RAS-binding domain (RBD) of ELMO (ELMO) interacts with RHOG to modulate DOCK1/2 activity. Here, we determine the cryo-EM structures of DOCK2-ELMO1 alone, and as a ternary complex with RAC1, together with the crystal structure of a RHOG-ELMO2 complex. The binary DOCK2-ELMO1 complex adopts a closed, auto-inhibited conformation. Relief of auto-inhibition to an active, open state, due to a conformational change of the ELMO1 subunit, exposes binding sites for RAC1 on DOCK2, and RHOG and BAI GPCRs on ELMO1. Our structure explains how up-stream effectors, including DOCK2 and ELMO1 phosphorylation, destabilise the auto-inhibited state to promote an active GEF.
History
DepositionNov 15, 2019-
Header (metadata) releaseJul 29, 2020-
Map releaseJul 29, 2020-
UpdateJul 29, 2020-
Current statusJul 29, 2020Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.03
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.03
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  • Surface view with fitted model
  • Atomic models: PDB-6tgb
  • Surface level: 0.03
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_10497.png

Downloads & links

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Map

FileDownload / File: emd_10497.map.gz / Format: CCP4 / Size: 85.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.43 Å
Density
Contour LevelBy AUTHOR: 0.04 / Movie #1: 0.03
Minimum - Maximum-0.030703332 - 0.10129304
Average (Standard dev.)0.00021003147 (±0.0027352436)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions282282282
Spacing282282282
CellA=B=C: 403.25998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.431.431.43
M x/y/z282282282
origin x/y/z0.0000.0000.000
length x/y/z403.260403.260403.260
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS282282282
D min/max/mean-0.0310.1010.000

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Supplemental data

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Sample components

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Entire : Binary complex of DOCK2-ELMO1

EntireName: Binary complex of DOCK2-ELMO1
Components
  • Complex: Binary complex of DOCK2-ELMO1
    • Protein or peptide: Dedicator of cytokinesis protein 2
    • Protein or peptide: Engulfment and cell motility protein 1ELMO1

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Supramolecule #1: Binary complex of DOCK2-ELMO1

SupramoleculeName: Binary complex of DOCK2-ELMO1 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
Molecular weightTheoretical: 550 KDa

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Macromolecule #1: Dedicator of cytokinesis protein 2

MacromoleculeName: Dedicator of cytokinesis protein 2 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 195.902516 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MAPWRKADKE RHGVAIYNFQ GSGAPQLSLQ IGDVVRIQET CGDWYRGYLI KHKMLQGIFP KSFIHIKEVT VEKRRNTENI IPAEIPLAQ EVTTTLWEWG SIWKQLYVAS KKERFLQVQS MMYDLMEWRS QLLSGTLPKD ELKELKQKVT SKIDYGNKIL E LDLIVRDE ...String:
MAPWRKADKE RHGVAIYNFQ GSGAPQLSLQ IGDVVRIQET CGDWYRGYLI KHKMLQGIFP KSFIHIKEVT VEKRRNTENI IPAEIPLAQ EVTTTLWEWG SIWKQLYVAS KKERFLQVQS MMYDLMEWRS QLLSGTLPKD ELKELKQKVT SKIDYGNKIL E LDLIVRDE DGNILDPDNT SVISLFHAHE EATDKITERI KEEMSKDQP(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)GFPE IIMPGDVRND IYITLLQGDF DKYNKTTQRN VEVIMCVCAE DGKTLP NAI CVGAGDKPMN EYRSVVYYQV KQPRWMETVK VAVPIEDMQR IHLRFMFRHR SSLESKDKGE KNFAMSYVKL MKEDGTT LH DGFHDLVVLK GDSKKMEDAS AYLTLPSYRH HVENKGATLS RSSSSVGGLS VSSRDVFSIS TLVCST(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)IM MEH SQSDEY DILVFDALIY IIGLIADRKF Q(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)S SELVDFLMET FIMFKDLIGK NVYPGDWMAM SMVQNRVFLR AINKFAETMN QKFL EHTNF EFQLWNNYFH LAVAFITQDS LQLEQFSHAK YNKILNKYGD MRRLIGFSIR DMWYKLGQNK ICFIPGMVGP ILEMT LIPE AELRKATIPI FFDMMLCEYQ RSGDFKKFEN EIILKLDHEV EGGRGDEQYM QLLESILMEC AAEHPTIAKS VENFVN LVK GLLEKLLDYR GVMTDESKDN RMSCTVNLLN FYKDNNREEM YIRYLYKLRD LHLDCDNYTE AAYTLLLHTW LLKWSDE QC ASQVMQTGQQ HPQTHRQLKE TLYETIIGYF DKGKMWEEAI SLCKELAEQY EMEIFDYELL SQNLIQQAKF YESIMKIL R PKPDYFAVGY YGQGFPSFLR NKVFIYRGKE YERREDFQMQ LMTQFPNAEK MNTTSAPGDD VKNAPGQYIQ CFTVQPVLD EHPRFKNKPV PDQIINFYKS NYVQRFHYSR PVRRGTVDPE NEFASMWIER TSFVTAYKLP GILRWFEVVH MSQTTISPLE NAIETMSTA NEKILMMINQ YQSDETLPIN PLSMLLNGIV DPAVMGGFAK YEKAFFTEEY VRDHPEDQDK LTHLKDLIAW Q IPFLGAGI KIHEKRVSDN LRPFHDRMEE CFKNLKMKVE KEYGVREMPD FDDRRVGRPR SMLRSYRQMS IISLASMNSD CS TPSKPTS ESFDLELASP KTPRVEQEEP ISPGSTLPEV KLRRSKKRTK RSSVVFADEK AAAESDLKRL SRKHEFMSDT NLS EHAAIP LKASVLSQMS FASQSMPTIP ALALSVAGIP GLDEANTSPR LSQTFLQLSD GDKKTLTRKK VNQFFKTMLA SKSA EEGKQ IPDSLSTDL

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Macromolecule #2: Engulfment and cell motility protein 1

MacromoleculeName: Engulfment and cell motility protein 1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 83.891328 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MPPPADIVKV AIEWPGAYPK LMEIDQKKPL SAIIKEVCDG WSLANHEYFA LQHADSSNFY ITEKNRNEIK NGTILRLTTS PAQNAQQLH ERIQSSSMDA KLEALKDLAS LSRDVTFAQE FINLDGISLL TQMVESGTEL YQKLQKIMKP CFGDMLSFTL T AFVELMDH ...String:
MPPPADIVKV AIEWPGAYPK LMEIDQKKPL SAIIKEVCDG WSLANHEYFA LQHADSSNFY ITEKNRNEIK NGTILRLTTS PAQNAQQLH ERIQSSSMDA KLEALKDLAS LSRDVTFAQE FINLDGISLL TQMVESGTEL YQKLQKIMKP CFGDMLSFTL T AFVELMDH GIVSWDTFSV AFIKKIASFV NKSAIDISIL QRSLAILESM VLNSHDLYQK VAQEITIGQL IPHLQGSDQE IQ TYTIAVI NALFLKAPDE RRQEMANILA QKQLRSIILT HVIRAQRAIN NEMAHQLYVL QVLTFNLLED RMMTKMDPQD QAQ RDIIFE LRRIAFDAES EPNNSSGSME KRKSMYTRDY KKLGFINHVN PAMDFTQTPP GMLALDNMLY FAKHHQDAYI RIVL ENSSR EDKHECPFGR SSIELTKMLC EILKVGELPS ETCNDFHPMF FTHDRSFEEF FCICIQLLNK TWKEMRATSE DFNKV MQVV KEQVMRALTT KPSSLDQFKS KLQNLSYTEI LKIRQSERMN QEDFQSRPIL ELKEKIQPEI LELIKQQRLN RLVEGT CFR KLNARRRQDK FWYCRLSPNH KVLHYGDLEE SPQGEVPHDS LQDKLPVADI KAVVTGKDCP HMKEKGALKQ NKEVLEL AF SILYDSNCQL NFIAPDKHEY CIWTDGLNAL LGKDMMSDLT RNDLDTLLSM EIKLRLLDLE NIQIPDAPPP IPKEPSNY D FVYDCN

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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: 8
Component:
ConcentrationFormulaName
20.0 mMC8H18N2O4SHepes
200.0 mMNaClSodium chloridesodium chloride
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK III

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Specialist opticsEnergy filter - Name: GIF Quantum ER / Energy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 50.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: Gctf
Startup modelType of model: INSILICO MODEL
Details: e2initialmodel.py from the EMAN2 package was used for generation of the initial model
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 5.5 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 1.4) / Number images used: 154428

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Atomic model buiding 1

RefinementProtocol: AB INITIO MODEL
Output model

PDB-6tgb:
CryoEM structure of the binary DOCK2-ELMO1 complex

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