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- PDB-5y9c: Crystal structure of HPV58 pentamer in complex with the Fab fragm... -

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Basic information

Entry
Database: PDB / ID: 5y9c
TitleCrystal structure of HPV58 pentamer in complex with the Fab fragment of antibody A12A3
Components
  • Major capsid protein L1
  • heavy chain of Fab fragment of antibody A12A3
  • light chain of Fab fragment of antibody A12A3
KeywordsSTRUCTURAL PROTEIN/IMMUNE SYSTEM / capsid protein / STRUCTURAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


T=7 icosahedral viral capsid / endocytosis involved in viral entry into host cell / host cell nucleus / structural molecule activity / virion attachment to host cell
Similarity search - Function
Major capsid L1 (late) superfamily, Papillomavirus / Major capsid L1 (late) protein, Papillomavirus / Major capsid L1 (late) superfamily, Papillomavirus / L1 (late) protein / Polyomavirus Vp1; Chain A / Double-stranded DNA virus, group I, capsid / Immunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
Major capsid protein L1
Similarity search - Component
Biological speciesHuman papillomavirus type 58
Mus musculus (house mouse)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Resolution: 3.443 Å
AuthorsLi, S.W. / Li, Z.H.
Funding support China, 4items
OrganizationGrant numberCountry
National Natural Science Foundation of China31670935 China
National Natural Science Foundation of China81671645 China
National Natural Science Foundation of China81571996 China
Natural Science Foundation of Fujian Province2015YZ0002 China
CitationJournal: mBio / Year: 2017
Title: Crystal Structures of Two Immune Complexes Identify Determinants for Viral Infectivity and Type-Specific Neutralization of Human Papillomavirus.
Authors: Zhihai Li / Daning Wang / Ying Gu / Shuo Song / Maozhou He / Jingjie Shi / Xinlin Liu / Shuangping Wei / Jinjin Li / Hai Yu / Qingbing Zheng / Xiaodong Yan / Timothy S Baker / Jun Zhang / ...Authors: Zhihai Li / Daning Wang / Ying Gu / Shuo Song / Maozhou He / Jingjie Shi / Xinlin Liu / Shuangping Wei / Jinjin Li / Hai Yu / Qingbing Zheng / Xiaodong Yan / Timothy S Baker / Jun Zhang / Jason S McLellan / Shaowei Li / Ningshao Xia /
Abstract: Persistent, high-risk human papillomavirus (HPV) infection is the primary cause of cervical cancer. Neutralizing antibodies elicited by L1-only virus-like particles (VLPs) can block HPV infection; ...Persistent, high-risk human papillomavirus (HPV) infection is the primary cause of cervical cancer. Neutralizing antibodies elicited by L1-only virus-like particles (VLPs) can block HPV infection; however, the lack of high-resolution structures has limited our understanding of the mode of virus infection and the requirement for type specificity at the molecular level. Here, we describe two antibodies, A12A3 and 28F10, that specifically bind to and neutralize HPV58 and HPV59, respectively, through two distinct binding stoichiometries. We show that the epitopes of A12A3 are clustered in the DE loops of two adjacent HPV58 L1 monomers, whereas 28F10 recognizes the HPV59 FG loop of a single monomer. Via structure-based mutagenesis and analysis of antibody binding, we further identified the residues HPV58 D154, S168, and N170 and HPV59 M267, Q270, E273, Y276, K278, and R283, which play critical roles in virus infection. By substituting these strategic epitope residues into other HPV genotypes, we could then redirect the type-specific binding of the antibodies to these genotypes, thus highlighting the importance of these specific residues, HPV58 R161, S168, and N308 and HPV59 Q270, E273, and D281. Overall, our findings provide molecular insights into potential structural determinants of HPV required for infectivity and type specificity. High-risk human papillomaviruses (HPVs) are considered the major causative pathogens of cancers that affect epithelial mucosa, such as cervical cancer. However, because of the lack of high-resolution structural information on the sites of neutralization, we have yet to determine the precise mode of HPV infection and how different types of HPV cause infection. Our crystal structures in this study have uncovered discrete binding stoichiometries for two different antibodies. We show that one A12A3 Fab binds to the center of one HPV58 pentamer, whereas five 28F10 Fabs bind along the top fringe of one HPV59 pentamer. Furthermore, through targeted epitope analysis, we show that 6 to 7 discontinuous residues of the L1 major capsid protein of HPV are determinants, at least in part, for virus infection and type specificity. This knowledge will help us to unravel the process of HPV infection and can potentially be used to drive the development of therapeutics that target neutralization-sensitive sites.
History
DepositionAug 24, 2017Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Oct 25, 2017Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Major capsid protein L1
B: Major capsid protein L1
C: Major capsid protein L1
D: Major capsid protein L1
E: Major capsid protein L1
H: heavy chain of Fab fragment of antibody A12A3
L: light chain of Fab fragment of antibody A12A3


Theoretical massNumber of molelcules
Total (without water)323,3577
Polymers323,3577
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area41670 Å2
ΔGint-241 kcal/mol
Surface area92810 Å2
Unit cell
Length a, b, c (Å)121.571, 102.600, 138.032
Angle α, β, γ (deg.)90.00, 114.52, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein
Major capsid protein L1


Mass: 55250.492 Da / Num. of mol.: 5 / Fragment: UNP RESIDUES 36-524
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human papillomavirus type 58 / Gene: L1 / Production host: Escherichia coli (E. coli) / References: UniProt: P26535
#2: Antibody heavy chain of Fab fragment of antibody A12A3


Mass: 23374.998 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mus musculus (house mouse)
#3: Antibody light chain of Fab fragment of antibody A12A3


Mass: 23729.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mus musculus (house mouse)

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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: 2.42 Å3/Da / Density % sol: 49.2 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 8
Details: 0.2 M lithium chloride, 0.1 M Tris pH 8.0, 14% (w/v) PEG 3350

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Data collection

DiffractionMean temperature: 80 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRF / Beamline: BL17U1 / Wavelength: 0.9795 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Sep 10, 2012
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9795 Å / Relative weight: 1
ReflectionResolution: 3.45→50 Å / Num. obs: 41030 / % possible obs: 99.9 % / Redundancy: 6.2 % / Net I/σ(I): 10.4

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Processing

Software
NameVersionClassification
PHENIX(1.11.1_2575)refinement
HKL-2000data scaling
PHASERphasing
RefinementResolution: 3.443→47.861 Å / SU ML: 0.43 / Cross valid method: FREE R-VALUE / σ(F): 1.37 / Phase error: 26.58 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.2492 2024 4.94 %
Rwork0.2023 --
obs0.2046 40995 99.51 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 3.443→47.861 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms19789 0 0 0 19789
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.00220307
X-RAY DIFFRACTIONf_angle_d0.50727566
X-RAY DIFFRACTIONf_dihedral_angle_d11.58912022
X-RAY DIFFRACTIONf_chiral_restr0.0422956
X-RAY DIFFRACTIONf_plane_restr0.0043585
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
3.4425-3.52860.31491270.2872662X-RAY DIFFRACTION95
3.5286-3.62390.36011290.27022777X-RAY DIFFRACTION100
3.6239-3.73050.31371440.262767X-RAY DIFFRACTION100
3.7305-3.85090.27951440.24542781X-RAY DIFFRACTION100
3.8509-3.98850.28531380.23862780X-RAY DIFFRACTION100
3.9885-4.14810.27711530.23432774X-RAY DIFFRACTION100
4.1481-4.33670.25711690.20072772X-RAY DIFFRACTION100
4.3367-4.56520.23161600.19072760X-RAY DIFFRACTION100
4.5652-4.8510.19211480.16672794X-RAY DIFFRACTION100
4.851-5.22510.20171450.17022783X-RAY DIFFRACTION100
5.2251-5.75020.22221360.18352817X-RAY DIFFRACTION100
5.7502-6.58040.24961490.20732787X-RAY DIFFRACTION100
6.5804-8.28360.26331520.19482818X-RAY DIFFRACTION100
8.2836-47.86530.21691300.16092899X-RAY DIFFRACTION100
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)
10.1847-0.50670.02730.77550.0707-0.1190.215-0.1062-0.07970.2725-0.0816-0.0618-0.03050.087100.58220.0095-0.06340.45310.05630.536511.978-4.194164.5621
20.24060.11170.29220.08650.11670.25410.0365-0.1627-0.18830.7496-0.3861-0.2502-0.0749-0.2009-0.00170.7467-0.2510.04260.61280.06590.5927-2.2106-4.8779.4069
30.48370.19670.55170.52520.45270.4961-0.0159-0.0449-0.1817-0.006-0.01010.03250.13490.277-00.54470.04740.01970.449-0.00890.62313.5914-1.20541.923
40.42190.5951-0.27040.56120.60550.88030.0805-0.30580.14930.1397-0.22030.09660.30050.2997-0.00070.4884-0.04470.0330.60950.15490.67536.4067-3.563669.2207
50.40590.00140.4056-0.25210.1380.56970.0112-0.1582-0.13750.0514-0.0061-0.1098-0.3055-0.04830.01180.7223-0.11990.04240.4549-0.11180.509417.58836.823968.2463
60.5890.2090.33431.0786-0.10550.5615-0.2764-0.3264-0.29220.43770.04080.2977-0.73820.50810.37460.51-0.1446-0.06090.406-0.2340.37211.087336.615869.3663
70.1755-0.05650.07990.01110.003-0.0360.0768-0.21470.1545-0.3169-0.0754-0.1804-0.13360.496400.6072-0.02220.07330.7797-0.02690.675127.762817.925341.1908
80.06690.0968-0.12120.2173-0.00730.0464-0.49040.1891-0.1062-0.4559-0.09570.03110.3420.5868-0.00090.75060.1360.04770.93910.11110.762331.381510.482164.6555
9-0.08080.5695-0.76530.3833-0.51860.65180.0397-0.2602-0.17520.024-0.05980.1048-0.1110.4156-00.4430.0049-0.02370.6922-0.03230.560525.1515.354453.3459
100.0173-0.00990.05720.11050.08010.04320.033-0.04920.2893-0.06560.0932-0.19320.3619-0.467200.6834-0.06380.05750.5446-0.04190.74693.598329.032962.694
110.1024-0.4926-0.38050.64760.0087-0.09840.0345-0.04820.00270.1721-0.2176-0.0539-0.27340.382-0.03110.6752-0.19350.05820.6803-0.09510.493620.151340.171754.1637
120.2535-0.1919-0.39370.0410.02140.55440.2035-0.42240.00990.17980.00850.2686-0.66910.37860.01860.7725-0.07450.11270.63-0.18180.64299.310636.537978.9926
130.40730.02040.17740.0908-0.00890.25630.1216-0.0148-0.4493-0.4968-0.12410.20130.0103-0.1261-0.15650.6822-0.2968-0.03770.5125-0.1771.0245-13.1512-11.127831.7606
140.46890.12310.20050.03310.06680.2098-0.0043-0.2375-0.3526-0.12560.20990.44630.4401-0.26280.31740.7554-0.5053-0.0740.94720.04961.3738-29.7964-13.698743.4128
150.20.34170.16260.79930.26710.1657-0.08740.8086-0.2349-0.5574-0.413-0.18210.0311-0.3752-0.26640.4281-0.1897-0.17210.4797-0.34940.6284.88246.831619.1711
160.2162-0.1187-0.06180.24320.0286-0.009-0.01880.6317-0.548-0.1364-0.2692-0.03240.3397-0.383-0.46450.4535-0.4546-0.17210.6246-0.57560.5219-8.67413.298712.8567
170.3541-0.47380.12270.4785-0.10220.0352-0.10780.191-0.2417-0.13930.23910.12610.1945-0.092500.6609-0.1491-0.04020.8523-0.1590.6971-5.46856.685719.412
180.6766-0.49410.37450.480.10230.4206-0.02720.219-0.4102-0.2251-0.06970.09430.1818-0.3756-00.5472-0.1717-0.08050.6395-0.11020.5849-6.50768.250326.7183
190.1501-0.0967-0.23540.2589-0.49520.930.29090.33370.095-0.14-0.08890.01660.3451-0.33620.00010.599-0.14250.01920.6863-0.17940.9283-9.9167-11.007531.186
200.00770.02090.02190.1751-0.05260.07320.1502-0.0909-0.2688-0.09950.130.2024-0.0151-0.39260.00010.8137-0.15270.11230.8343-0.07121.05-17.3427-10.997445.3008
210.0421-0.3380.24730.0396-0.28550.43890.04430.15730.08540.03960.13110.15260.3592-0.2280.1880.5116-0.0463-0.23111.03670.04030.664-23.069126.00815.1368
220.0360.36450.12350.37530.24240.39820.12860.4772-0.0928-0.3234-0.05630.162-0.2562-0.2882-0.01840.5030.1058-0.19570.85570.05840.7163-10.113127.602519.1322
230.34360.00150.17370.4022-0.00790.2250.13730.2329-0.1853-0.2368-0.04190.0709-0.1577-0.048600.68610.0674-0.07560.8760.06040.5662-0.245237.420219.2565
240.1140.05730.03630.1806-0.2810.52210.0472-0.063-0.10230.2302-0.14640.08850.0078-1.1991-0.06560.6293-0.0033-0.15290.8347-0.01510.7222-19.785825.548231.8412
250.01960.11-0.05170.16360.0884-0.0855-0.30380.43980.2749-0.06110.3605-0.17280.2585-0.22100.65120.0221-0.09861.0814-0.09480.7267-11.828316.661813.7781
260.50470.491-0.3480.2368-0.30770.3480.15640.2354-0.0324-0.4041-0.16010.39140.0438-0.9298-0.13430.64210.1307-0.23151.42430.03211.0085-34.724729.665821.2957
27-0.00120.0051-0.14690.43740.04970.29160.10660.04720.095-0.0656-0.0774-0.0709-0.22970.1897-00.94460.26760.02310.5230.06420.7178-4.07655.673837.7782
280.05340.01510.40590.4204-0.27320.8405-0.2985-0.3596-0.17330.13430.17820.1698-0.35130.229-0.00040.85320.13410.04040.5245-0.0080.69794.884345.376737.5662
290.72880.27150.55950.23920.30540.78290.11940.22770.03450.01040.24340.3435-0.7110.61740.08640.9681-0.00310.14990.4042-0.00040.627213.527947.446142.8863
300.12510.0585-0.3150.4184-0.14450.7793-0.0687-0.1753-0.2005-0.06350.05440.086-0.56120.37430.00090.6243-0.1318-0.00250.5252-0.03830.651520.023339.610242.3731
310.10970.10150.17440.1120.02390.2021-0.24050.00710.02590.51520.27230.1339-0.0351-0.35940.00580.83980.17460.04650.6626-0.13150.8664-8.311741.229345.8168
320.56470.09450.1034-0.1988-0.03630.26340.19910.280.1624-0.2551-0.11840.1265-0.937-0.1937-0.0030.87680.21480.12890.46070.00190.7334-6.819953.23837.0707
330.1979-0.09130.09530.4391-0.13280.17550.0445-0.04420.004-0.0386-0.1629-0.0713-0.05730.27800.95910.0240.04230.9451-0.08410.711238.393616.32696.5654
340.0595-0.0227-0.0531-0.0017-0.00030.0266-0.34280.0562-0.52440.0784-0.0388-0.08030.2260.0672-01.02970.10780.09261.1643-0.10061.346532.633112.1395.5967
350.28710.0547-0.36710.0457-0.09720.1528-0.27570.2267-0.1207-0.0140.11540.2820.38410.335101.08640.06870.04041.2139-0.12630.967338.224319.17314.6198
360.06810.08390.10120.05390.00410.0459-0.3816-0.59410.68840.26260.0651-0.2489-0.5340.140901.21130.1369-0.02261.4221-0.07751.604369.810512.1519-4.6088
370.00910.02710.00030.02620.07310.0590.2791-0.8457-0.49240.09420.04920.2927-0.144-0.151901.75440.02710.04591.80770.21041.780967.413213.0173-1.8514
380.0314-0.0243-0.02580.01560.03380.011-0.34790.48810.0125-0.3832-0.01420.54480.9501-0.0771-0.00011.64540.26890.07171.7784-0.08361.36264.801616.1437-6.5899
390.01770.0325-0.0246-0.02580.00110.0568-0.2185-0.42380.3230.331-0.0170.37680.03930.467-01.8291-0.0773-0.48861.64070.0752.05776.651419.4341-1.5599
400.01470.01590.0091-0.00540.0080.047-0.02730.1016-0.31510.97170.42890.76130.52110.232501.07240.066-0.05011.7670.31821.186670.23219.82124.9123
410.0653-0.03610.0753-0.0218-0.01650.0360.27490.2349-0.1926-0.6441-0.4371-0.3464-0.1875-0.5620.00010.8734-0.07780.04231.15930.0730.811441.597134.3826-13.305
420.05990.0135-0.06410.0238-0.04750.09380.30010.2640.0359-0.63860.1020.0866-0.1785-0.55820.00010.8808-0.04120.06651.1833-0.00210.72933.046132.9498-4.8848
430.0343-0.0105-0.03830.008-0.09380.2568-0.1414-0.38190.0418-0.2184-0.24350.26140.06780.41800.8596-0.1238-0.04791.1189-0.09790.911542.485636.43771.4331
440.02920.0345-0.05650.0588-0.04170.06430.37820.2032-0.1177-0.110.10980.46810.2181-0.49530.00021.3918-0.05570.14521.279-0.1110.752636.174139.5847-8.6487
45-0.01270.01210.00920.3701-0.06940.0260.37750.60430.34380.1837-0.0330.38190.12210.136601.0953-0.13490.06331.2038-0.11320.673741.50531.7284-5.1276
460.0564-0.03860.04010.00430.01470.05760.07250.37890.15260.3373-0.3190.29550.59080.1353-0.00021.1468-0.12880.33921.2846-0.08461.088661.186534.6896-14.2298
470.3941-0.01780.0610.11340.009-0.00570.2701-0.14050.40690.20.4774-0.82070.25130.27840.01671.37240.4089-0.21681.4236-0.28311.104773.156515.8821-16.5894
480.0797-0.09810.08280.0774-0.0313-0.03430.23190.2862-0.9787-0.2585-0.35980.7161-0.74330.4002-0.00031.24240.18180.0981.7132-0.3311.076369.705717.1187-14.5367
491.53371.10140.63990.75580.41650.2764-0.6174-0.17350.4409-0.2512-0.04820.4966-0.27840.5353-0.03630.97960.13280.17541.5101-0.21510.72375.333224.2976-22.8277
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1chain 'A' and (resid 20 through 83 )
2X-RAY DIFFRACTION2chain 'A' and (resid 84 through 110 )
3X-RAY DIFFRACTION3chain 'A' and (resid 111 through 355 )
4X-RAY DIFFRACTION4chain 'A' and (resid 356 through 473 )
5X-RAY DIFFRACTION5chain 'B' and (resid 20 through 83 )
6X-RAY DIFFRACTION6chain 'B' and (resid 84 through 126 )
7X-RAY DIFFRACTION7chain 'B' and (resid 127 through 161 )
8X-RAY DIFFRACTION8chain 'B' and (resid 162 through 187 )
9X-RAY DIFFRACTION9chain 'B' and (resid 188 through 296 )
10X-RAY DIFFRACTION10chain 'B' and (resid 297 through 324 )
11X-RAY DIFFRACTION11chain 'B' and (resid 325 through 381 )
12X-RAY DIFFRACTION12chain 'B' and (resid 382 through 473 )
13X-RAY DIFFRACTION13chain 'C' and (resid 20 through 83 )
14X-RAY DIFFRACTION14chain 'C' and (resid 84 through 110 )SOU 2137 O SER
15X-RAY DIFFRACTION15chain 'C' and (resid 111 through 172 )
16X-RAY DIFFRACTION16chain 'C' and (resid 173 through 209 )
17X-RAY DIFFRACTION17chain 'C' and (resid 210 through 272 )
18X-RAY DIFFRACTION18chain 'C' and (resid 273 through 338 )
19X-RAY DIFFRACTION19chain 'C' and (resid 339 through 442 )
20X-RAY DIFFRACTION20chain 'C' and (resid 443 through 473 )
21X-RAY DIFFRACTION21chain 'D' and (resid 20 through 83 )
22X-RAY DIFFRACTION22chain 'D' and (resid 84 through 146 )
23X-RAY DIFFRACTION23chain 'D' and (resid 147 through 296 )
24X-RAY DIFFRACTION24chain 'D' and (resid 297 through 324 )
25X-RAY DIFFRACTION25chain 'D' and (resid 325 through 381 )
26X-RAY DIFFRACTION26chain 'D' and (resid 382 through 473 )
27X-RAY DIFFRACTION27chain 'E' and (resid 20 through 83 )
28X-RAY DIFFRACTION28chain 'E' and (resid 84 through 146 )
29X-RAY DIFFRACTION29chain 'E' and (resid 147 through 209 )
30X-RAY DIFFRACTION30chain 'E' and (resid 210 through 296 )
31X-RAY DIFFRACTION31chain 'E' and (resid 297 through 324 )
32X-RAY DIFFRACTION32chain 'E' and (resid 325 through 473 )
33X-RAY DIFFRACTION33chain 'H' and (resid 1 through 60 )
34X-RAY DIFFRACTION34chain 'H' and (resid 61 through 77 )
35X-RAY DIFFRACTION35chain 'H' and (resid 78 through 113 )
36X-RAY DIFFRACTION36chain 'H' and (resid 114 through 141 )
37X-RAY DIFFRACTION37chain 'H' and (resid 142 through 160 )
38X-RAY DIFFRACTION38chain 'H' and (resid 161 through 179 )
39X-RAY DIFFRACTION39chain 'H' and (resid 180 through 199 )
40X-RAY DIFFRACTION40chain 'H' and (resid 200 through 216 )
41X-RAY DIFFRACTION41chain 'L' and (resid 1 through 25 )
42X-RAY DIFFRACTION42chain 'L' and (resid 26 through 38 )
43X-RAY DIFFRACTION43chain 'L' and (resid 39 through 61 )
44X-RAY DIFFRACTION44chain 'L' and (resid 62 through 75 )
45X-RAY DIFFRACTION45chain 'L' and (resid 76 through 101 )
46X-RAY DIFFRACTION46chain 'L' and (resid 102 through 112 )
47X-RAY DIFFRACTION47chain 'L' and (resid 113 through 157 )
48X-RAY DIFFRACTION48chain 'L' and (resid 158 through 188 )
49X-RAY DIFFRACTION49chain 'L' and (resid 193 through 209 )

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