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- EMDB-31217: The structure of ALC1 bound to the nucleosome -

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Basic information

Entry
Database: EMDB / ID: EMD-31217
TitleThe structure of ALC1 bound to the nucleosome
Map dataThe structure of ALC1 bound to the nucleosome
Sample
  • Complex: The structure of ALC1 bound to the nucleosome
    • Complex: ALC1CHD1L
      • Protein or peptide: Chromodomain-helicase-DNA-binding protein 1-like
    • Complex: Histone
      • Protein or peptide: Histone H3.2
      • Protein or peptide: Histone H4
      • Protein or peptide: Histone H2A type 1
      • Protein or peptide: Histone H2B 1.1
    • Complex: DNA
      • DNA: DNA (167-MER)
      • DNA: DNA (167-MER)
  • Ligand: ADENOSINE-5'-DIPHOSPHATE
  • Ligand: BERYLLIUM TRIFLUORIDE ION
Function / homology
Function and homology information


poly-ADP-D-ribose modification-dependent protein binding / ATP-dependent chromatin remodeler activity / site of DNA damage / nucleosome binding / DNA helicase activity / histone reader activity / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / Dual Incision in GG-NER / Formation of Incision Complex in GG-NER / structural constituent of chromatin ...poly-ADP-D-ribose modification-dependent protein binding / ATP-dependent chromatin remodeler activity / site of DNA damage / nucleosome binding / DNA helicase activity / histone reader activity / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / Dual Incision in GG-NER / Formation of Incision Complex in GG-NER / structural constituent of chromatin / nucleosome / site of double-strand break / chromatin remodeling / protein heterodimerization activity / nucleotide binding / DNA repair / DNA damage response / ATP hydrolysis activity / DNA binding / nucleoplasm / ATP binding / nucleus / plasma membrane / cytosol
Similarity search - Function
Chromodomain-helicase-DNA-binding protein 1-like / : / SNF2-like, N-terminal domain superfamily / SNF2, N-terminal / SNF2-related domain / DNA/RNA helicase, ATP-dependent, DEAH-box type, conserved site / DEAH-box subfamily ATP-dependent helicases signature. / Histone H2B signature. / Histone H2B / Histone H2B ...Chromodomain-helicase-DNA-binding protein 1-like / : / SNF2-like, N-terminal domain superfamily / SNF2, N-terminal / SNF2-related domain / DNA/RNA helicase, ATP-dependent, DEAH-box type, conserved site / DEAH-box subfamily ATP-dependent helicases signature. / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H2A / Histone 2A / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Helicase conserved C-terminal domain / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Histone-fold / helicase superfamily c-terminal domain / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / Macro domain / Macro domain profile. / Macro domain-like / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Histone H2B 1.1 / Histone H2A type 1 / Histone H4 / Histone H3.2 / Chromodomain-helicase-DNA-binding protein 1-like
Similarity search - Component
Biological speciesHomo sapiens (human) / Xenopus laevis (African clawed frog) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsChen ZC / Chen KJ / Wang L
CitationJournal: Nat Commun / Year: 2021
Title: Structural basis of ALC1/CHD1L autoinhibition and the mechanism of activation by the nucleosome.
Authors: Li Wang / Kangjing Chen / Zhucheng Chen /
Abstract: Chromatin remodeler ALC1 (amplification in liver cancer 1) is crucial for repairing damaged DNA. It is autoinhibited and activated by nucleosomal epitopes. However, the mechanisms by which ALC1 is ...Chromatin remodeler ALC1 (amplification in liver cancer 1) is crucial for repairing damaged DNA. It is autoinhibited and activated by nucleosomal epitopes. However, the mechanisms by which ALC1 is regulated remain unclear. Here we report the crystal structure of human ALC1 and the cryoEM structure bound to the nucleosome. The structure shows the macro domain of ALC1 binds to lobe 2 of the ATPase motor, sequestering two elements for nucleosome recognition, explaining the autoinhibition mechanism of the enzyme. The H4 tail competes with the macro domain for lobe 2-binding, explaining the requirement for this nucleosomal epitope for ALC1 activation. A dual-arginine-anchor motif of ALC1 recognizes the acidic pocket of the nucleosome, which is critical for chromatin remodeling in vitro. Together, our findings illustrate the structures of ALC1 and shed light on its regulation mechanisms, paving the way for the discovery of drugs targeting ALC1 for the treatment of cancer.
History
DepositionApr 18, 2021-
Header (metadata) releaseJul 14, 2021-
Map releaseJul 14, 2021-
UpdateJul 14, 2021-
Current statusJul 14, 2021Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.003
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.003
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7enn
  • Surface level: 0.003
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_31217.map.gz / Format: CCP4 / Size: 421.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationThe structure of ALC1 bound to the nucleosome
Voxel sizeX=Y=Z: 0.54125 Å
Density
Contour LevelBy AUTHOR: 0.003 / Movie #1: 0.003
Minimum - Maximum-0.010644554 - 0.026563706
Average (Standard dev.)5.711568e-05 (±0.0006825874)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions480480480
Spacing480480480
CellA=B=C: 259.8 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.541250.541250.54125
M x/y/z480480480
origin x/y/z0.0000.0000.000
length x/y/z259.800259.800259.800
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ256256256
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS480480480
D min/max/mean-0.0110.0270.000

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Supplemental data

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Mask #1

Fileemd_31217_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Mask #2

Fileemd_31217_msk_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Additional map: The structure of ALC1 linker region bound to the nucleosome

Fileemd_31217_additional_1.map
AnnotationThe structure of ALC1 linker region bound to the nucleosome
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Additional map: The structure of ALC1 motor domain

Fileemd_31217_additional_2.map
AnnotationThe structure of ALC1 motor domain
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Sample components

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Entire : The structure of ALC1 bound to the nucleosome

EntireName: The structure of ALC1 bound to the nucleosome
Components
  • Complex: The structure of ALC1 bound to the nucleosome
    • Complex: ALC1CHD1L
      • Protein or peptide: Chromodomain-helicase-DNA-binding protein 1-like
    • Complex: Histone
      • Protein or peptide: Histone H3.2
      • Protein or peptide: Histone H4
      • Protein or peptide: Histone H2A type 1
      • Protein or peptide: Histone H2B 1.1
    • Complex: DNA
      • DNA: DNA (167-MER)
      • DNA: DNA (167-MER)
  • Ligand: ADENOSINE-5'-DIPHOSPHATE
  • Ligand: BERYLLIUM TRIFLUORIDE ION

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Supramolecule #1: The structure of ALC1 bound to the nucleosome

SupramoleculeName: The structure of ALC1 bound to the nucleosome / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7

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Supramolecule #2: ALC1

SupramoleculeName: ALC1 / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Escherichia coli (E. coli)

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Supramolecule #3: Histone

SupramoleculeName: Histone / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2-#5
Source (natural)Organism: Xenopus laevis (African clawed frog)
Recombinant expressionOrganism: Escherichia coli (E. coli)

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Supramolecule #4: DNA

SupramoleculeName: DNA / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #6-#7

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Macromolecule #1: Chromodomain-helicase-DNA-binding protein 1-like

MacromoleculeName: Chromodomain-helicase-DNA-binding protein 1-like / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA helicase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 101.117094 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MERAGATSRG GQAPGFLLRL HTEGRAEAAR VQEQDLRQWG LTGIHLRSYQ LEGVNWLAQR FHCQNGCILG DEMGLGKTCQ TIALFIYLA GRLNDEGPFL ILCPLSVLSN WKEEMQRFAP GLSCVTYAGD KEERACLQQD LKQESRFHVL LTTYEICLKD A SFLKSFPW ...String:
MERAGATSRG GQAPGFLLRL HTEGRAEAAR VQEQDLRQWG LTGIHLRSYQ LEGVNWLAQR FHCQNGCILG DEMGLGKTCQ TIALFIYLA GRLNDEGPFL ILCPLSVLSN WKEEMQRFAP GLSCVTYAGD KEERACLQQD LKQESRFHVL LTTYEICLKD A SFLKSFPW SVLVVDEAHR LKNQSSLLHK TLSEFSVVFS LLLTGTPIQN SLQELYSLLS FVEPDLFSKE EVGDFIQRYQ DI EKESESA SELHKLLQPF LLRRVKAEVA TELPKKTEVV IYHGMSALQK KYYKAILMKD LDAFENETAK KVKLQNILSQ LRK CVDHPY LFDGVEPEPF EVGDHLTEAS GKLHLLDKLL AFLYSGGHRV LLFSQMTQML DILQDYMDYR GYSYERVDGS VRGE ERHLA IKNFGQQPIF VFLLSTRAGG VGMNLTAADT VIFVDSDFNP QNDLQAAARA HRIGQNKSVK VIRLIGRDTV EEIVY RKAA SKLQLTNMII EGGHFTLGAQ KPAADADLQL SEILKFGLDK LLASEGSTMD EIDLESILGE TKDGQWVSDA LPAAEG GSR DQEEGKNHMY LFEGKDYSKE PSKEDRKSFE QLVNLQKTLL EKASQEGRSL RNKGSVLIPG LVEGSTKRKR VLSPEEL ED RQKKRQEAAA KRRRLIEEKK RQKEEAEHKK KMAWWESNNY QSFCLPSEES EPEDLENGEE SSAELDYQDP DATSLKYV S GDVTHPQAGA EDALIVHCVD DSGHWGRGGL FTALEKRSAE PRKIYELAGK MKDLSLGGVL LFPVDDKESR NKGQDLLAL IVAQHRDRSN VLSGIKMAAL EEGLKKIFLA AKKKKASVHL PRIGHATKGF NWYGTEQLIR KHLAARGIPT YIYYFPRSKS AVLHSQSSS SSSRQLVP

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Macromolecule #2: Histone H3.2

MacromoleculeName: Histone H3.2 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 15.289904 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
ARTKQTARKS TGGKAPRKQL ATKAARKSAP ATGGVKKPHR YRPGTVALRE IRRYQKSTEL LIRKLPFQRL VREIAQDFKT DLRFQSSAV MALQEASEAY LVGLFEDTNL CAIHAKRVTI MPKDIQLARR IRGERA

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Macromolecule #3: Histone H4

MacromoleculeName: Histone H4 / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 11.263231 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
SGRGKGGKGL GKGGAKRHRK VLRDNIQGIT KPAIRRLARR GGVKRISGLI YEETRGVLKV FLENVIRDAV TYTEHAKRKT VTAMDVVYA LKRQGRTLYG FGG

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Macromolecule #4: Histone H2A type 1

MacromoleculeName: Histone H2A type 1 / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 13.978241 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
SGRGKQGGKT RAKAKTRSSR AGLQFPVGRV HRLLRKGNYA ERVGAGAPVY LAAVLEYLTA EILELAGNAA RDNKKTRIIP RHLQLAVRN DEELNKLLGR VTIAQGGVLP NIQSVLLPKK TESSKSAKSK

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Macromolecule #5: Histone H2B 1.1

MacromoleculeName: Histone H2B 1.1 / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 13.524752 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
AKSAPAPKKG SKKAVTKTQK KDGKKRRKTR KESYAIYVYK VLKQVHPDTG ISSKAMSIMN SFVNDVFERI AGEASRLAHY NKRSTITSR EIQTAVRLLL PGELAKHAVS EGTKAVTKYT SAK

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Macromolecule #6: DNA (167-MER)

MacromoleculeName: DNA (167-MER) / type: dna / ID: 6 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 51.311652 KDa
SequenceString: (DC)(DG)(DC)(DG)(DG)(DC)(DC)(DG)(DC)(DC) (DC)(DT)(DG)(DG)(DA)(DG)(DA)(DA)(DT)(DC) (DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG) (DA)(DG)(DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA) (DA) (DT)(DT)(DG)(DG)(DT)(DC) ...String:
(DC)(DG)(DC)(DG)(DG)(DC)(DC)(DG)(DC)(DC) (DC)(DT)(DG)(DG)(DA)(DG)(DA)(DA)(DT)(DC) (DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG) (DA)(DG)(DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA) (DA) (DT)(DT)(DG)(DG)(DT)(DC)(DG)(DT) (DA)(DG)(DA)(DC)(DA)(DG)(DC)(DT)(DC)(DT) (DA)(DG) (DC)(DA)(DC)(DC)(DG)(DC)(DT) (DT)(DA)(DA)(DA)(DC)(DG)(DC)(DA)(DC)(DG) (DT)(DA)(DC) (DG)(DC)(DG)(DC)(DT)(DG) (DT)(DC)(DC)(DC)(DC)(DC)(DG)(DC)(DG)(DT) (DT)(DT)(DT)(DA) (DA)(DC)(DC)(DG)(DC) (DC)(DA)(DA)(DG)(DG)(DG)(DG)(DA)(DT)(DT) (DA)(DC)(DT)(DC)(DC) (DC)(DT)(DA)(DG) (DT)(DC)(DT)(DC)(DC)(DA)(DG)(DG)(DC)(DA) (DC)(DG)(DT)(DG)(DT)(DC) (DA)(DG)(DA) (DT)(DA)(DT)(DA)(DT)(DA)(DC)(DA)(DT)(DC) (DC)(DT)(DG)(DA)(DA)(DG)(DC) (DT)(DT) (DG)(DT)(DC)(DG)(DA)

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Macromolecule #7: DNA (167-MER)

MacromoleculeName: DNA (167-MER) / type: dna / ID: 7 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 51.800965 KDa
SequenceString: (DT)(DC)(DG)(DA)(DC)(DA)(DA)(DG)(DC)(DT) (DT)(DC)(DA)(DG)(DG)(DA)(DT)(DG)(DT)(DA) (DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA) (DC)(DA)(DC)(DG)(DT)(DG)(DC)(DC)(DT)(DG) (DG) (DA)(DG)(DA)(DC)(DT)(DA) ...String:
(DT)(DC)(DG)(DA)(DC)(DA)(DA)(DG)(DC)(DT) (DT)(DC)(DA)(DG)(DG)(DA)(DT)(DG)(DT)(DA) (DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA) (DC)(DA)(DC)(DG)(DT)(DG)(DC)(DC)(DT)(DG) (DG) (DA)(DG)(DA)(DC)(DT)(DA)(DG)(DG) (DG)(DA)(DG)(DT)(DA)(DA)(DT)(DC)(DC)(DC) (DC)(DT) (DT)(DG)(DG)(DC)(DG)(DG)(DT) (DT)(DA)(DA)(DA)(DA)(DC)(DG)(DC)(DG)(DG) (DG)(DG)(DG) (DA)(DC)(DA)(DG)(DC)(DG) (DC)(DG)(DT)(DA)(DC)(DG)(DT)(DG)(DC)(DG) (DT)(DT)(DT)(DA) (DA)(DG)(DC)(DG)(DG) (DT)(DG)(DC)(DT)(DA)(DG)(DA)(DG)(DC)(DT) (DG)(DT)(DC)(DT)(DA) (DC)(DG)(DA)(DC) (DC)(DA)(DA)(DT)(DT)(DG)(DA)(DG)(DC)(DG) (DG)(DC)(DC)(DT)(DC)(DG) (DG)(DC)(DA) (DC)(DC)(DG)(DG)(DG)(DA)(DT)(DT)(DC)(DT) (DC)(DC)(DA)(DG)(DG)(DG)(DC) (DG)(DG) (DC)(DC)(DG)(DC)(DG)

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Macromolecule #8: ADENOSINE-5'-DIPHOSPHATE

MacromoleculeName: ADENOSINE-5'-DIPHOSPHATE / type: ligand / ID: 8 / Number of copies: 1 / Formula: ADP
Molecular weightTheoretical: 427.201 Da
Chemical component information

ChemComp-ADP:
ADENOSINE-5'-DIPHOSPHATE / ADP, energy-carrying molecule*YM / Adenosine diphosphate

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Macromolecule #9: BERYLLIUM TRIFLUORIDE ION

MacromoleculeName: BERYLLIUM TRIFLUORIDE ION / type: ligand / ID: 9 / Number of copies: 1 / Formula: BEF
Molecular weightTheoretical: 66.007 Da
Chemical component information

ChemComp-BEF:
BERYLLIUM TRIFLUORIDE ION

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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

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 586673

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