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- PDB-1xz0: Crystal structure of CD1a in complex with a synthetic mycobactin ... -

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Basic information

Entry
Database: PDB / ID: 1xz0
TitleCrystal structure of CD1a in complex with a synthetic mycobactin lipopeptide
Components
  • Beta-2-microglobulin
  • T-cell surface glycoprotein CD1a
KeywordsIMMUNE SYSTEM / beta sheet platform / MHC-fold / Protein-lipopeptide complex
Function / homology
Function and homology information


endogenous lipid antigen binding / exogenous lipid antigen binding / antigen processing and presentation, endogenous lipid antigen via MHC class Ib / antigen processing and presentation, exogenous lipid antigen via MHC class Ib / lipopeptide binding / positive regulation of ferrous iron binding / positive regulation of transferrin receptor binding / positive regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression ...endogenous lipid antigen binding / exogenous lipid antigen binding / antigen processing and presentation, endogenous lipid antigen via MHC class Ib / antigen processing and presentation, exogenous lipid antigen via MHC class Ib / lipopeptide binding / positive regulation of ferrous iron binding / positive regulation of transferrin receptor binding / positive regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / negative regulation of receptor binding / DAP12 interactions / cellular response to iron ion / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / cellular response to iron(III) ion / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / negative regulation of forebrain neuron differentiation / regulation of erythrocyte differentiation / peptide antigen assembly with MHC class I protein complex / ER to Golgi transport vesicle membrane / regulation of iron ion transport / response to molecule of bacterial origin / MHC class I peptide loading complex / HFE-transferrin receptor complex / T cell mediated cytotoxicity / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / MHC class I protein complex / negative regulation of neurogenesis / positive regulation of receptor-mediated endocytosis / peptide antigen assembly with MHC class II protein complex / multicellular organismal-level iron ion homeostasis / MHC class II protein complex / cellular response to nicotine / specific granule lumen / positive regulation of cellular senescence / positive regulation of T cell mediated cytotoxicity / recycling endosome membrane / phagocytic vesicle membrane / peptide antigen binding / antigen processing and presentation of exogenous peptide antigen via MHC class II / negative regulation of epithelial cell proliferation / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / positive regulation of immune response / Interferon gamma signaling / Modulation by Mtb of host immune system / positive regulation of T cell activation / sensory perception of smell / negative regulation of neuron projection development / positive regulation of protein binding / tertiary granule lumen / DAP12 signaling / MHC class II protein complex binding / late endosome membrane / iron ion transport / ER-Phagosome pathway / T cell differentiation in thymus / early endosome membrane / protein refolding / protein homotetramerization / intracellular iron ion homeostasis / adaptive immune response / amyloid fibril formation / learning or memory / endosome membrane / immune response / membrane raft / Amyloid fiber formation / endoplasmic reticulum lumen / lysosomal membrane / Golgi membrane / external side of plasma membrane / focal adhesion / Neutrophil degranulation / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / Golgi apparatus / endoplasmic reticulum / protein homodimerization activity / extracellular space / extracellular exosome / extracellular region / identical protein binding / membrane / plasma membrane / cytosol
Similarity search - Function
MHC-I family domain / MHC class I-like antigen recognition-like / Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1 / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / MHC classes I/II-like antigen recognition protein / : / Immunoglobulin/major histocompatibility complex, conserved site ...MHC-I family domain / MHC class I-like antigen recognition-like / Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1 / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / MHC classes I/II-like antigen recognition protein / : / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulins / Immunoglobulin-like fold / Immunoglobulin-like / Sandwich / 2-Layer Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Chem-JH0 / T-cell surface glycoprotein CD1a / Beta-2-microglobulin
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.8 Å
AuthorsZajonc, D.M. / Crispin, M.D. / Bowden, T.A. / Young, D.C. / Cheng, T.Y. / Hu, J. / Costello, C.E. / Miller, M.J. / Moody, D.B. / Wilson, I.A.
CitationJournal: Immunity / Year: 2005
Title: Molecular Mechanism of Lipopeptide Presentation by CD1a.
Authors: Zajonc, D.M. / Crispin, M.D. / Bowden, T.A. / Young, D.C. / Cheng, T.Y. / Hu, J. / Costello, C.E. / Rudd, P.M. / Dwek, R.A. / Miller, M.J. / Brenner, M.B. / Moody, D.B. / Wilson, I.A.
History
DepositionNov 11, 2004Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 1, 2005Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Advisory / Version format compliance
Revision 1.3Feb 5, 2020Group: Data collection / Database references / Derived calculations
Category: chem_comp / pdbx_struct_assembly ...chem_comp / pdbx_struct_assembly / pdbx_struct_assembly_gen / pdbx_struct_assembly_prop / struct_biol / struct_conn / struct_ref_seq_dif
Item: _chem_comp.type / _struct_conn.pdbx_leaving_atom_flag / _struct_ref_seq_dif.details
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_unobs_or_zero_occ_atoms / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.type_symbol / _chem_comp.name / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _entity.type / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_unobs_or_zero_occ_atoms.label_asym_id / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Aug 23, 2023Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_ncs_dom_lim
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI ..._chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ncs_dom_lim.beg_auth_comp_id / _struct_ncs_dom_lim.end_auth_comp_id
Revision 2.2Oct 30, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: T-cell surface glycoprotein CD1a
B: Beta-2-microglobulin
C: T-cell surface glycoprotein CD1a
D: Beta-2-microglobulin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)90,3078
Polymers87,2884
Non-polymers3,0194
Water34219
1
A: T-cell surface glycoprotein CD1a
B: Beta-2-microglobulin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)45,2554
Polymers43,6442
Non-polymers1,6112
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area5120 Å2
ΔGint-13 kcal/mol
Surface area19790 Å2
MethodPISA
2
C: T-cell surface glycoprotein CD1a
D: Beta-2-microglobulin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)45,0524
Polymers43,6442
Non-polymers1,4082
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area4490 Å2
ΔGint-8 kcal/mol
Surface area19860 Å2
MethodPISA
Unit cell
Length a, b, c (Å)55.961, 43.235, 209.944
Angle α, β, γ (deg.)90.00, 91.04, 90.00
Int Tables number4
Space group name H-MP1211
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11A
21C
12B
22D

NCS domain segments:

Component-ID: 1 / Refine code: 2

Dom-IDEns-IDBeg auth comp-IDBeg label comp-IDEnd auth comp-IDEnd label comp-IDAuth asym-IDLabel asym-IDAuth seq-IDLabel seq-ID
11LEULEUTRPTRPAA8 - 2778 - 277
21LEULEUTRPTRPCC8 - 2778 - 277
12ILEILEASPASPBB1 - 981 - 98
22ILEILEASPASPDD1 - 981 - 98

NCS ensembles :
ID
1
2

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Components

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Protein , 2 types, 4 molecules ACBD

#1: Protein T-cell surface glycoprotein CD1a / CD1a antigen / T-cell surface antigen T6/Leu-6 / hTa1 thymocyte antigen


Mass: 31895.756 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD1A / Plasmid: pRMHa3 / Production host: Drosophila melanogaster (fruit fly) / Strain (production host): S2 cells / References: UniProt: P06126
#2: Protein Beta-2-microglobulin / HDCMA22P


Mass: 11748.160 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: B2M / Plasmid: pRMHa3 / Production host: Drosophila melanogaster (fruit fly) / Strain (production host): S2 cells / References: UniProt: P61769

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Sugars , 2 types, 2 molecules

#3: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 570.542 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4[LFucpa1-6]DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5]/1-1-2/a4-b1_a6-c1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}[(6+1)][a-L-Fucp]{}}}LINUCSPDB-CARE
#4: Polysaccharide alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 367.349 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
LFucpa1-6DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5]/1-2/a6-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(6+1)][a-L-Fucp]{}}}LINUCSPDB-CARE

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Non-polymers , 2 types, 21 molecules

#5: Chemical ChemComp-JH0 / 6-(HYDROXY-HEXADECANOYL-AMINO)-2-{[(4S)-2-(2-HYDROXY-PHENYL)-4,5-DIHYDRO-OXAZOLE-4-CARBONYL]-AMINO}-HEXANOIC ACID 2-[(3S)-1-(TERT-BUTYL-DIPHENYL-SILANYLOXY)-2-OXO-AZEPAN-3-YLCARBAMOYL]-(1S)-1-METHYL-ETHYL ESTER


Mass: 1040.408 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C58H85N5O10Si
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 19 / Source method: isolated from a natural source / Formula: H2O

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Details

Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.93 Å3/Da / Density % sol: 57.68 %
Crystal growTemperature: 295 K / Method: vapor diffusion, sitting drop / pH: 8
Details: PEG 2000 MME, Tris, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 295K

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Data collection

DiffractionMean temperature: 120 K
Diffraction sourceSource: SYNCHROTRON / Site: ALS / Beamline: 8.3.1 / Wavelength: 1.116 Å
DetectorType: ADSC QUANTUM 210 / Detector: CCD / Date: Nov 14, 2003
RadiationMonochromator: double crystal / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.116 Å / Relative weight: 1
ReflectionResolution: 2.8→50 Å / Num. all: 25373 / Num. obs: 23923 / % possible obs: 94.3 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3 % / Rsym value: 0.098 / Net I/σ(I): 14.6
Reflection shellResolution: 2.8→2.9 Å / Mean I/σ(I) obs: 2.2 / Num. unique all: 2205 / Rsym value: 0.444 / % possible all: 85.5

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Processing

Software
NameVersionClassification
REFMAC5.2.0003refinement
HKL-2000data reduction
SCALEPACKdata scaling
MOLREPphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB Entry 1ONQ
Resolution: 2.8→38.63 Å / Cor.coef. Fo:Fc: 0.924 / Cor.coef. Fo:Fc free: 0.878 / SU B: 37.508 / SU ML: 0.321 / TLS residual ADP flag: LIKELY RESIDUAL / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R Free: 0.42 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.27712 1157 4.8 %RANDOM
Rwork0.21699 ---
all0.21797 24273 --
obs0.21992 22766 94.29 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 52.263 Å2
Baniso -1Baniso -2Baniso -3
1-0.1 Å20 Å2-0.04 Å2
2--0 Å20 Å2
3----0.11 Å2
Refinement stepCycle: LAST / Resolution: 2.8→38.63 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6029 0 161 19 6209
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0130.0216394
X-RAY DIFFRACTIONr_bond_other_d0.0010.025481
X-RAY DIFFRACTIONr_angle_refined_deg1.4781.9328690
X-RAY DIFFRACTIONr_angle_other_deg0.857312769
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.3645733
X-RAY DIFFRACTIONr_dihedral_angle_2_deg35.57423.812320
X-RAY DIFFRACTIONr_dihedral_angle_3_deg18.35915994
X-RAY DIFFRACTIONr_dihedral_angle_4_deg12.91534
X-RAY DIFFRACTIONr_chiral_restr0.0840.2899
X-RAY DIFFRACTIONr_gen_planes_refined0.0050.027049
X-RAY DIFFRACTIONr_gen_planes_other0.0020.021366
X-RAY DIFFRACTIONr_nbd_refined0.1910.2983
X-RAY DIFFRACTIONr_nbd_other0.1780.24800
X-RAY DIFFRACTIONr_nbtor_refined0.1820.22860
X-RAY DIFFRACTIONr_nbtor_other0.0840.23542
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1480.254
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.1480.211
X-RAY DIFFRACTIONr_symmetry_vdw_other0.180.240
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1530.22
X-RAY DIFFRACTIONr_mcbond_it0.31.53682
X-RAY DIFFRACTIONr_mcbond_other0.1091.51495
X-RAY DIFFRACTIONr_mcangle_it0.64525942
X-RAY DIFFRACTIONr_scbond_it1.10832976
X-RAY DIFFRACTIONr_scangle_it1.9234.52748
Refine LS restraints NCS

Dom-ID: 1 / Refine-ID: X-RAY DIFFRACTION

Ens-IDAuth asym-IDNumberTypeRms dev position (Å)Weight position
1A1586tight positional0.040.05
2B579tight positional0.030.05
1A2538medium positional0.210.5
2B962medium positional0.190.5
1A1586tight thermal0.050.5
2B579tight thermal0.050.5
1A2538medium thermal0.282
2B962medium thermal0.342
LS refinement shellResolution: 2.8→2.873 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.562 71 -
Rwork0.409 1367 -
obs--78.02 %
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL112)L122)L132)L222)L232)L332)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T112)T122)T132)T222)T232)T332)Origin x (Å)Origin y (Å)Origin z (Å)
14.0312.68680.41766.86861.38420.33860.0030.2366-0.1337-0.2617-0.0026-0.45410.27290.1578-0.0004-0.3570.04440.0194-0.05460.0196-0.239823.3122-8.774971.7522
21.0922-0.2937-0.68321.33881.08643.8972-0.05130.17310.070.0471-0.01780.2336-0.2227-0.27440.0691-0.4748-0.0295-0.0115-0.23850.0396-0.13790.38147.036188.0063
33.6972-3.04650.30896.62260.83642.12560.0997-0.33560.14310.2090.0493-0.2585-0.04610.1833-0.1490.1049-0.03550.0248-0.0133-0.0107-0.238831.56039.909541.832
40.992-0.3186-0.70011.83710.94483.5946-0.1217-0.0213-0.1489-0.19360.01670.15210.294-0.360.1050.1981-0.0178-0.0334-0.1710.0353-0.188920.8904-5.985215.5774
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDLabel asym-IDAuth seq-IDLabel seq-ID
1X-RAY DIFFRACTION1AA7 - 1817 - 181
2X-RAY DIFFRACTION1AE501 - 531
3X-RAY DIFFRACTION2AA182 - 277182 - 277
4X-RAY DIFFRACTION2BB1 - 981 - 98
5X-RAY DIFFRACTION3CC8 - 1818 - 181
6X-RAY DIFFRACTION3CF501 - 532
7X-RAY DIFFRACTION4CC182 - 277182 - 277
8X-RAY DIFFRACTION4DD1 - 981 - 98

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