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- PDB-2x2j: Crystal structure of the Gracilariopsis lemaneiformis alpha- 1,4-... -

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Basic information

Entry
Database: PDB / ID: 2x2j
TitleCrystal structure of the Gracilariopsis lemaneiformis alpha- 1,4-glucan lyase with deoxynojirimycin
ComponentsALPHA-1,4-GLUCAN LYASE ISOZYME 1
KeywordsLYASE / STARCH BINDING DOMAIN / ANHYDROFRUCTOSE PATHWAY / GLYCOSIDE HYDROLASE FAMILY 31
Function / homology
Function and homology information


exo-(1,4)-alpha-D-glucan lyase activity / hydrolase activity, hydrolyzing O-glycosyl compounds / carbohydrate binding / carbohydrate metabolic process
Similarity search - Function
glycosyl hydrolase (family 31) / : / Glycosyl hydrolase family 31 C-terminal domain / Glycoside hydrolase family 31 / Glycosyl hydrolases family 31 TIM-barrel domain / Galactose mutarotase-like domain superfamily / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta / Glycoside hydrolase superfamily / Immunoglobulin-like ...glycosyl hydrolase (family 31) / : / Glycosyl hydrolase family 31 C-terminal domain / Glycoside hydrolase family 31 / Glycosyl hydrolases family 31 TIM-barrel domain / Galactose mutarotase-like domain superfamily / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta / Glycoside hydrolase superfamily / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
1-DEOXYNOJIRIMYCIN / Glucosidase II subunit alpha
Similarity search - Component
Biological speciesGRACILARIOPSIS LEMANEIFORMIS (eukaryote)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.35 Å
AuthorsRozeboom, H.J. / Yu, S. / Madrid, S. / Kalk, K.H. / Dijkstra, B.W.
CitationJournal: J.Biol.Chem. / Year: 2013
Title: Crystal Structure of Alpha-1,4-Glucan Lyase, a Unique Glycoside Hydrolase Family Member with a Novel Catalytic Mechanism.
Authors: Rozeboom, H.J. / Yu, S. / Madrid, S. / Kalk, K.H. / Zhang, R. / Dijkstra, B.W.
History
DepositionJan 13, 2010Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jan 19, 2011Provider: repository / Type: Initial release
Revision 1.1Aug 14, 2013Group: Database references / Derived calculations ...Database references / Derived calculations / Non-polymer description / Version format compliance
Revision 1.2Sep 25, 2013Group: Database references
Revision 1.3Jul 5, 2017Group: Data collection / Category: diffrn_source / Item: _diffrn_source.type
Revision 1.4Jan 30, 2019Group: Data collection / Experimental preparation / Category: exptl_crystal_grow / Item: _exptl_crystal_grow.method
Revision 1.5Feb 6, 2019Group: Data collection / Experimental preparation / Category: exptl_crystal_grow / Item: _exptl_crystal_grow.temp
Revision 1.6Dec 20, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / pdbx_initial_refinement_model / struct_conn / struct_ncs_dom_lim / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.status_code_sf / _struct_conn.pdbx_leaving_atom_flag / _struct_ncs_dom_lim.beg_auth_comp_id / _struct_ncs_dom_lim.beg_label_asym_id / _struct_ncs_dom_lim.beg_label_comp_id / _struct_ncs_dom_lim.beg_label_seq_id / _struct_ncs_dom_lim.end_auth_comp_id / _struct_ncs_dom_lim.end_label_asym_id / _struct_ncs_dom_lim.end_label_comp_id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Remark 700 SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "BL" IN EACH CHAIN ON SHEET RECORDS BELOW ... SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "BL" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 11-STRANDED BARREL THIS IS REPRESENTED BY A 12-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: ALPHA-1,4-GLUCAN LYASE ISOZYME 1
B: ALPHA-1,4-GLUCAN LYASE ISOZYME 1
C: ALPHA-1,4-GLUCAN LYASE ISOZYME 1
D: ALPHA-1,4-GLUCAN LYASE ISOZYME 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)466,05623
Polymers464,2494
Non-polymers1,80819
Water28,4101577
1
A: ALPHA-1,4-GLUCAN LYASE ISOZYME 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)116,7218
Polymers116,0621
Non-polymers6597
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
2
B: ALPHA-1,4-GLUCAN LYASE ISOZYME 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)116,3534
Polymers116,0621
Non-polymers2913
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
3
C: ALPHA-1,4-GLUCAN LYASE ISOZYME 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)116,6297
Polymers116,0621
Non-polymers5676
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
4
D: ALPHA-1,4-GLUCAN LYASE ISOZYME 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)116,3534
Polymers116,0621
Non-polymers2913
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)134.314, 91.707, 192.899
Angle α, β, γ (deg.)90.00, 99.33, 90.00
Int Tables number4
Space group name H-MP1211
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11A
21B
31C
41D

NCS domain segments:

Component-ID: 1 / Ens-ID: 1 / Beg auth comp-ID: THR / Beg label comp-ID: THR / End auth comp-ID: NOJ / End label comp-ID: NOJ / Refine code: 4 / Auth seq-ID: 14 - 1050 / Label seq-ID: 3

Dom-IDAuth asym-IDLabel asym-ID
1AA - E
2BB - L
3CC - O
4DD - U

NCS oper:
IDCodeMatrixVector
1given(-0.7329, -0.5877, 0.3428), (-0.5797, 0.2756, -0.7668), (0.3562, -0.7607, -0.5426)13.17, 35.26, 48.11
2given(0.7317, -0.5902, -0.3411), (0.5788, 0.2734, 0.7683), (-0.3601, -0.7596, 0.5416)-19.15, -117, 68.2

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Components

#1: Protein
ALPHA-1,4-GLUCAN LYASE ISOZYME 1


Mass: 116062.156 Da / Num. of mol.: 4 / Fragment: RESIDUES 62-1088
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) GRACILARIOPSIS LEMANEIFORMIS (eukaryote)
Description: REPLICATING VECTOR WITH HARS SEQUENCE. COLLECTED AT TAPING BAY, TSINGTAO, CHINA
Production host: PICHIA ANGUSTA (fungus) / Strain (production host): RB11 / References: UniProt: Q9STC1, EC: 4.2.2.13
#2: Chemical
ChemComp-NOJ / 1-DEOXYNOJIRIMYCIN / MORANOLINE / 1-Deoxynojirimycin


Mass: 163.172 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C6H13NO4 / Comment: inhibitor*YM
#3: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL / Glycerol


Mass: 92.094 Da / Num. of mol.: 11 / Source method: obtained synthetically / Formula: C3H8O3
#4: Chemical
ChemComp-CL / CHLORIDE ION / Chloride


Mass: 35.453 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Cl
#5: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 1577 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsFIRST 50 AMINO ACIDS ARE A SIGNAL PEPTIDE. THE NEXT 11 AMINO ACIDS ARE NOT PRESENT IN THE ENZYME.

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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: 2.5 Å3/Da / Density % sol: 51 % / Description: NONE
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 5
Details: 18-21% PEG 8000, 0.1 M SODIUM ACETATE, PH 5.0-5.2, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K

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Data collection

DiffractionMean temperature: 110 K
Diffraction sourceSource: ROTATING ANODE / Type: ENRAF-NONIUS FR591 / Wavelength: 1.5418
DetectorType: MAC Science DIP-2030 / Detector: IMAGE PLATE / Date: Mar 1, 2007 / Details: OSMIC MIRRORS
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.35→50 Å / Num. obs: 175340 / % possible obs: 91 % / Observed criterion σ(I): -3 / Redundancy: 4 % / Biso Wilson estimate: 33.5 Å2 / Rmerge(I) obs: 0.21 / Net I/σ(I): 4.3
Reflection shellResolution: 2.35→2.43 Å / Redundancy: 2 % / Rmerge(I) obs: 0.69 / Mean I/σ(I) obs: 1 / % possible all: 85.2

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Processing

Software
NameVersionClassification
REFMAC5.5.0102refinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 2X2H
Resolution: 2.35→33.19 Å / Cor.coef. Fo:Fc: 0.943 / Cor.coef. Fo:Fc free: 0.906 / SU B: 27.018 / SU ML: 0.276 / Cross valid method: THROUGHOUT / ESU R: 0.625 / ESU R Free: 0.326 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. ATOM RECORD CONTAINS SUM OF TLS AND RESIDUAL B FACTORS. U VALUES WITH TLS ADDED.
RfactorNum. reflection% reflectionSelection details
Rfree0.29121 8712 5 %RANDOM
Rwork0.23387 ---
obs0.23673 166607 90.98 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 46.07 Å2
Baniso -1Baniso -2Baniso -3
1-2.57 Å20 Å2-2.95 Å2
2---1.99 Å20 Å2
3----1.53 Å2
Refinement stepCycle: LAST / Resolution: 2.35→33.19 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms32648 0 114 1577 34339
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.010.02233627
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.3011.92945727
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg8.9385.0194104
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.38924.6341804
X-RAY DIFFRACTIONr_dihedral_angle_3_deg16.103155140
X-RAY DIFFRACTIONr_dihedral_angle_4_deg17.33315188
X-RAY DIFFRACTIONr_chiral_restr0.0890.24696
X-RAY DIFFRACTIONr_gen_planes_refined0.0050.02126816
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it01.520308
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it0.004232752
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it0.117313319
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it0.1484.512975
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
Refine LS restraints NCS

Ens-ID: 1 / Number: 8173 / Refine-ID: X-RAY DIFFRACTION

Dom-IDAuth asym-IDTypeRms dev position (Å)Weight position
1Amedium positional0.260.5
2Bmedium positional0.250.5
3Cmedium positional0.260.5
4Dmedium positional0.250.5
1Amedium thermal0.052
2Bmedium thermal0.052
3Cmedium thermal0.052
4Dmedium thermal0.042
LS refinement shellResolution: 2.35→2.411 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.39 584 -
Rwork0.343 11083 -
obs--82.9 %
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)
10.5357-0.13880.66060.8925-0.29470.96750.0455-0.04430.01190.0807-0.05550.15020.0279-0.16240.00990.4562-0.00230.1130.5144-0.00820.430238.4613.3999.334
20.4309-0.12050.10080.63250.32721.3032-0.06910.00940.07590.09910.0268-0.0949-0.16650.1460.04240.4204-0.03170.06140.45960.00980.448146.3048.75587.018
30.34670.1690.13060.62320.23251.0379-0.02410.06580.030.0506-0.02460.16880.0346-0.13580.04860.3941-0.04070.03850.48570.00620.468825.89-12.05465.195
42.6950.61840.15716.23380.4923-0.29530.1183-0.18320.0484-0.199-0.18350.99350.1567-0.22320.06520.5045-0.08110.06720.78110.02010.7186.9761.58980.495
50.1836-0.13940.4581.77150.49571.4008-0.1011-0.04680.04050.07590.00410.2921-0.071-0.22580.0970.34750.00920.10410.5778-0.01580.585317.2382.83874.633
60.5464-0.2831-0.07470.9330.25220.5623-0.06250.00530.0559-0.03020.0030.0613-0.0082-0.04510.05940.4234-0.04730.02990.47310.00690.387738.144-4.53967.398
70.9717-0.23370.05191.026-0.30911.13690.0550.0384-0.0783-0.0309-0.0073-0.01780.19640.189-0.04770.4109-0.00280.0830.4637-0.02840.388251.367-23.18563.306
83.4722-0.3733.61971.26830.7424.51460.14510.1202-0.1658-0.3089-0.18250.09090.19090.01970.03730.66450.08570.07110.5485-0.05810.466556.443-37.70254.663
9-0.0913-1.37790.18033.1476-0.5141-0.18810.05240.02920.0023-0.14220.06470.08340.24080.1622-0.11710.76620.0261-0.05680.5682-0.02580.452355.78-36.0762.632
100.67470.11340.73431.73140.28781.61930.05710.1678-0.169-0.51450.0374-0.0880.31420.2417-0.09450.4969-0.02850.02270.557-0.05410.574818.19-62.6365.382
110.40480.6620.07092.25620.83331.15350.00150.0665-0.0754-0.31870.0630.29890.1567-0.0811-0.06450.3707-0.0227-0.04660.5579-0.00510.57494.902-56.33510.588
120.7286-0.03330.28171.34260.33131.0391-0.02320.01670.02870.04680.0054-0.067-0.1510.08530.01780.379-0.0364-0.0110.4911-0.00560.4624.096-33.45831.401
136.11562.11626.30564.58021.52910.5009-0.06250.32650.2377-0.0803-0.0478-0.3719-0.31480.63910.11040.3692-0.1430.18120.69790.02690.525535.681-30.3416.2
141.3733-0.13491.50360.8673-0.12224.0562-0.14190.15860.0182-0.2540.07260.0328-0.33530.3050.06930.444-0.09060.03830.53120.01830.532725.338-31.50111.971
150.4720.39510.1781.2147-0.05851.405-0.0025-0.0230.00640.0548-0.06970.1712-0.0848-0.02290.07220.2547-0.01370.04750.5135-0.03110.520411.589-40.2828.551
161.23510.0424-0.15951.8189-0.10121.30780.1291-0.2148-0.09890.4029-0.17550.19110.0747-0.07550.04650.5009-0.10130.04810.5885-0.00560.511311.36-50.15449.588
17-0.0074-0.1345-0.13048.36620.44432.5149-0.0094-0.52110.05780.4250.15310.24860.0444-0.0018-0.14370.8069-0.13580.060.8258-0.01640.568113.108-50.69167.144
181.0232-1.5119-0.55315.6258-0.33740.62840.4181-0.2324-0.28910.2474-0.38260.25270.09850.2015-0.03550.8489-0.1769-0.15490.70780.06950.534715.516-55.9961.395
190.1608-0.02360.32581.2062-0.20781.3484-0.0560.06080.0113-0.32430.0366-0.1161-0.0120.18810.01940.29260.00920.17060.547-0.0130.410980.155-50.402-4.196
200.6038-0.09560.32910.3957-0.58331.2883-0.0455-0.01610.1018-0.06010.0250.082-0.0979-0.10060.02050.26370.02310.13160.4962-0.01270.45772.338-45.0928.198
210.1783-0.1559-0.01920.7205-0.04730.8009-0.01-0.06820.06010.06120.0134-0.18440.13180.0945-0.00340.25340.01530.10840.53980.01270.450692.976-65.86129.831
222.28912.08150.36927.50462.0612.0933-0.1805-0.0115-0.1635-0.31710.19-0.561-0.05380.6805-0.00950.12490.01050.29790.86210.01570.6154111.754-52.13314.425
230.5718-0.38950.67361.8421-1.08561.9555-0.08750.07310.06080.0884-0.059-0.3556-0.10450.23840.14640.2155-0.02420.13310.57140.0140.5463101.483-50.91920.406
240.54050.2902-0.08381.1698-0.2470.502-0.0150.02350.03630.16020.009-0.1140.02330.01190.00610.21180.03140.12890.51930.00090.388280.677-58.36727.717
250.7320.04540.15311.0695-0.22490.92810.0048-0.0105-0.04970.1357-0.0121-0.01530.0469-0.14630.00730.3522-0.01950.1220.47440.01090.405167.653-77.07631.71
262.38090.75241.95990.24380.26933.66110.2470.0234-0.18360.3319-0.2179-0.12750.6456-0.0967-0.02910.6787-0.13020.04310.57030.0750.456762.532-91.22840.316
271.9788-1.2724-0.00442.79241.23132.98060.09750.0615-0.11370.01530.0670.00230.4863-0.0458-0.16450.4116-0.03470.11350.42070.01930.380563.22-9032.452
280.3805-0.3170.56152.7746-0.40140.8043-0.0417-0.1854-0.11180.48910.05680.18580.1676-0.2072-0.01520.71790.0081-0.03060.58970.07560.6055100.596-24.68489.715
290.3302-0.54290.1422.0967-0.6351.2513-0.0379-0.08-0.09930.34110.0349-0.32660.14390.15190.0030.61240.0297-0.15890.5310.02060.6167113.864-18.58584.389
300.4013-0.10390.02041.1303-0.60581.08440.0437-0.0217-0.0427-0.00670.02380.0821-0.0066-0.1041-0.06750.40830.0173-0.0330.5092-0.01150.501394.8814.44363.558
312.186-0.62941.8152.6281-1.60818.9614-0.2122-0.24980.02220.52350.2930.3881-0.3418-0.8464-0.08080.71430.13770.05550.7339-0.01250.558783.1247.6288.763
320.6717-0.27440.71061.95120.11193.2379-0.2072-0.25010.03880.38450.11520.0109-0.3748-0.32190.0920.60530.0652-0.02290.5471-0.00570.548293.5356.38483.017
330.5266-0.4530.11541.578-0.26321.23730.04720.046-0.00570.059-0.0644-0.22580.0760.03650.01710.42320.0365-0.05810.50530.00940.539107.184-2.34366.653
341.8013-0.1090.09872.0977-0.27171.23340.27590.2678-0.1758-0.5674-0.2872-0.23110.40380.17160.01130.7210.1782-0.00160.609-0.01580.5192107.886-12.26845.412
350.0214-1.3751-1.34374.5757-2.19843.22420.29590.3195-0.097-1.4392-0.2394-0.04760.4926-0.0971-0.05651.06330.23570.00740.7923-0.06620.6683105.782-12.83327.846
361.23090.34060.0252.39561.78733.1254-0.2319-0.1207-0.0516-0.451-0.0797-0.14510.0312-0.16190.31150.790.1726-0.04340.677-0.03750.578103.271-18.11433.581
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A14 - 124
2X-RAY DIFFRACTION2A125 - 323
3X-RAY DIFFRACTION3A324 - 468
4X-RAY DIFFRACTION4A469 - 503
5X-RAY DIFFRACTION5A504 - 585
6X-RAY DIFFRACTION6A586 - 842
7X-RAY DIFFRACTION7A843 - 973
8X-RAY DIFFRACTION8A974 - 1018
9X-RAY DIFFRACTION9A1019 - 1038
10X-RAY DIFFRACTION10B14 - 124
11X-RAY DIFFRACTION11B125 - 323
12X-RAY DIFFRACTION12B324 - 468
13X-RAY DIFFRACTION13B469 - 503
14X-RAY DIFFRACTION14B504 - 584
15X-RAY DIFFRACTION15B585 - 842
16X-RAY DIFFRACTION16B843 - 973
17X-RAY DIFFRACTION17B974 - 1018
18X-RAY DIFFRACTION18B1019 - 1038
19X-RAY DIFFRACTION19C14 - 124
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