T=7 icosahedral capsid protein


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The capsid is composed 60 asymmetric units made of 7 proteins (T=7), for a total of 420 capsid proteins. These capsids are skewed, and are therefore described as either right- (dextro) or left- (laevo) handed.


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Papillomaviruses and Polyomaviruses are composed solely of pentameric capsomeres for a total of 360 capsid proteins. Nevertheless their icosahedral structure is that of a T=7 capsid in which pentamers occupy hexavalent positions.

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Icosahedric triangulation number is calculated following Caspar and Klug system

Viral molecular biology Virion
Virus entry
Virus latency
Transcription and replication
Host-virus interactions
Virus exit
Icosahedric capsids Virus symmetry and T number
T=1
T=2*
T=3
T=pseudo3
T=4
T=7
T=9
T=13
T=16
T=21
T=25
T=27
T=28
T=31
T=75 bacterial carboxysome
Links image
Uniprot Keyword: KW-1145
GO ontology: GO:0039620
Virus dsDNA
Polyomaviridae
Papillomaviridae
Siphoviridae
Podoviridae
dsDNA(RT)
Caulimoviridae

Matching UniProtKB/Swiss-Prot entries

(all links/actions below point to uniprot.org website)

121 entries grouped by strain (browse by keywords)

1 entry

Bacillus phage SPP1 (Bacteriophage SPP1) reference strain

CAPSD_BPSPP Major capsid protein (Gene product 13) (gp13)

pdb 4AN5; 6R3A; 6R3B; 6RTL

1 entry

Bovine papillomavirus type 1 reference strain

VL1_BPV1 Major capsid protein L1

pdb 3IYJ

1 entry

Bovine papillomavirus type 3 reference strain

VL1_BPV3 Major capsid protein L1

1 entry

Bovine papillomavirus type 5 reference strain

VL1_BPV5 Major capsid protein L1

1 entry

Bovine polyomavirus (BPyV) (Bos taurus polyomavirus 1) reference strain

VP1_POVBO Major capsid protein VP1 (Major structural protein VP1)

1 entry

Budgerigar fledgling disease virus (BFPyV) (Aves polyomavirus 1) reference strain

VP1_BFPYV Major capsid protein VP1 (Major structural protein VP1)

pdb 3IYS

1 entry

Canine oral papillomavirus (strain Y62) (COPV) reference strain

VL1_COPV6 Major capsid protein L1

1 entry

Carnation etched ring virus (CERV) reference strain

CAPSD_CERV Probable capsid protein (CP) (Coat protein)

1 entry

Cauliflower mosaic virus (strain CM-1841) (CaMV) reference strain

CAPSD_CAMVC Capsid protein (CP) (Coat protein)

1 entry

Cauliflower mosaic virus (strain Strasbourg) (CaMV) reference strain

CAPSD_CAMVS Capsid protein (CP) (Coat protein)

1 entry

Cestrum yellow leaf curling virus (CmYLCV) reference strain

CAPSD_CYLCV Capsid protein (CP) (coat protein)

1 entry

Cottontail rabbit papillomavirus (strain Kansas) (CRPV) (Papillomavirus sylvilagi) reference strain

VL1_CRPVK Major capsid protein L1

1 entry

Escherichia phage lambda (Bacteriophage lambda) reference strain

CAPSD_LAMBD Major capsid protein (Gene product E) (gpE) (Major head protein)

pdb 7VI9; 7VIA; 7VII; 7VIK

1 entry

European elk papillomavirus (EEPV) reference strain

VL1_PAPVE Major capsid protein L1

1 entry

Figwort mosaic virus (strain DxS) (FMV) reference strain

CAPSD_FMVD Probable capsid protein (CP) (Coat protein)

1 entry

Human papillomavirus 11 reference strain

VL1_HPV11 Major capsid protein L1

pdb 2R5K

1 entry

Human papillomavirus 14 reference strain

VL1_HPV14 Major capsid protein L1

1 entry

Human papillomavirus 15 reference strain

VL1_HPV15 Major capsid protein L1

1 entry

Human papillomavirus 17 reference strain

VL1_HPV17 Major capsid protein L1

1 entry

Human papillomavirus 21 reference strain

VL1_HPV21 Major capsid protein L1

1 entry

Human papillomavirus 22 reference strain

VL1_HPV22 Major capsid protein L1

1 entry

Human papillomavirus 24 reference strain

VL1_HPV24 Major capsid protein L1

1 entry

Human papillomavirus 29 reference strain

VL1_HPV29 Major capsid protein L1

1 entry

Human papillomavirus 30 reference strain

VL1_HPV30 Major capsid protein L1

1 entry

Human papillomavirus 31 reference strain

VL1_HPV31 Major capsid protein L1

1 entry

Human papillomavirus 33 reference strain

VL1_HPV33 Major capsid protein L1

pdb 6IGE

1 entry

Human papillomavirus 35 reference strain

VL1_HPV35 Major capsid protein L1

pdb 2R5J

1 entry

Human papillomavirus 39 reference strain

VL1_HPV39 Major capsid protein L1

1 entry

Human papillomavirus 4 reference strain

VL1_HPV04 Major capsid protein L1

1 entry

Human papillomavirus 42 reference strain

VL1_HPV42 Major capsid protein L1

1 entry

Human papillomavirus 44 reference strain

VL1_HPV44 Major capsid protein L1

1 entry

Human papillomavirus 47 reference strain

VL1_HPV47 Major capsid protein L1

1 entry

Human papillomavirus 5 reference strain

VL1_HPV05 Major capsid protein L1

1 entry

Human papillomavirus 52 reference strain

VL1_HPV52 Major capsid protein L1

pdb 6IGF

1 entry

Human papillomavirus 56 reference strain

VL1_HPV56 Major capsid protein L1

1 entry

Human papillomavirus 65 reference strain

VL1_HPV65 Major capsid protein L1

1 entry

Human papillomavirus 69 reference strain

VL1_HPV69 Major capsid protein L1

1 entry

Human papillomavirus 82 reference strain

VL1_HPV82 Major capsid protein L1

1 entry

Human papillomavirus 9 reference strain

VL1_HPV09 Major capsid protein L1

1 entry

Human papillomavirus type 1 (Human papillomavirus type 1a) reference strain

VL1_HPV1 Major capsid protein L1

1 entry

Human papillomavirus type 10 reference strain

VL1_HPV10 Major capsid protein L1

1 entry

Human papillomavirus type 16 reference strain

VL1_HPV16 Major capsid protein L1

pdb 1DZL; 3J6R; 3J7G; 3J8V; 3J8W; 3J8Z; 3JBA; 5KEP; 5KEQ; 6BSP; 6BT3; 7CN2; 7KZF

1 entry

Human papillomavirus type 18 reference strain

VL1_HPV18 Major capsid protein L1

pdb 2R5I; 5W1X

1 entry

Human papillomavirus type 32 reference strain

VL1_HPV32 Major capsid protein L1

1 entry

Human papillomavirus type 41 reference strain

VL1_HPV41 Major capsid protein L1

1 entry

Human papillomavirus type 48 reference strain

VL1_HPV48 Major capsid protein L1

1 entry

Human papillomavirus type 50 reference strain

VL1_HPV50 Major capsid protein L1

1 entry

Human papillomavirus type 55 reference strain

VL1_HPV55 Major capsid protein L1

1 entry

Human papillomavirus type 60 reference strain

VL1_HPV60 Major capsid protein L1

1 entry

Human papillomavirus type 61 reference strain

VL1_HPV61 Major capsid protein L1

1 entry

Human papillomavirus type 63 reference strain

VL1_HPV63 Major capsid protein L1

1 entry

Human papillomavirus type 70 reference strain

VL1_HPV70 Major capsid protein L1

1 entry

JC polyomavirus (JCPyV) (JCV) reference strain

VP1_POVJC Major capsid protein VP1 (Major structural protein VP1)

pdb 3NXD; 3NXG; 4JCD; 4JCE; 4JCF; 4WDY; 4WDZ; 4WE0; 4X14; 4X15; 4X16; 4X17

1 entry

Lactococcus phage LL-H (Lactococcus delbrueckii bacteriophage LL-H) reference strain

COAT_BPLLH Major capsid protein (ORF3 protein) (Protein Gp34)

1 entry

Lactococcus phage SK1 (Lactococcus lactis bacteriophage SK1) reference strain

CAPSD_BPLSK Capsid protein (Gene product 6) (gp6)

1 entry

Lactococcus phage p2 (Lactococcus lactis bacteriophage p2) reference strain

CAPSD_BPLP2 Capsid protein (Gene product 6) (gp6)

1 entry

Macaca mulata papillomavirus 1 (Rhpv 1) (Rhesus papillomavirus type 1) reference strain

VL1_MMPV1 Major capsid protein L1

1 entry

Murine polyomavirus (strain A2) (MPyV) reference strain

VP1_POVMA Major capsid protein VP1 (Major structural protein VP1)

1 entry

Odocoileus virginianus papillomavirus 1 (DPV) (Deer papillomavirus) reference strain

VL1_OVPVD Major capsid protein L1

1 entry

Pseudomonas phage PAJU2 reference strain

CAPSD_BPPAJ Capsid polyprotein (ORF3 protein) (EC 3.4.-.-) [Cleaved into: Capsid protein]

1 entry

Salmonella phage P22 (Bacteriophage P22) reference strain

CAPSD_BPP22 Major capsid protein (Gene product 5) (gp5) (Major head protein)

pdb 2M5S; 2XYY; 2XYZ; 3IYH; 3IYI; 5UU5

1 entry

Simian virus 40 (SV40) reference strain

VP1_SV40 Major capsid protein VP1 (Major structural protein VP1)

pdb 1SVA; 3BWQ; 3BWR

1 entry

Soybean chlorotic mottle virus reference strain

CAPSD_SOCMV Capsid protein (CP) (Coat protein)

1 entry

Squirrel monkey polyomavirus reference strain

VP1_POVSM Major capsid protein VP1 (Major structural protein VP1)

1 entry

Thermus virus P23-45 (Thermus thermophilus phage P23-45) reference strain

CAPSD_BP234 Major capsid protein (Gene product 89) (gp89) (Major head protein)

pdb 6I9E; 6IBC

1 entry

WU polyomavirus (WUPyV) reference strain

VP1_POVWU Major capsid protein VP1 (Major structural protein VP1)

pdb 3S7X

1 entry

B-lymphotropic polyomavirus (LPV)

VP1_POVLY Major capsid protein VP1 (Major structural protein VP1)

pdb 4MBX; 4MBY; 4MBZ

1 entry

BK polyomavirus (BKPyV) (Human polyomavirus 1)

VP1_POVBK Major capsid protein VP1 (Major structural protein VP1)

pdb 4MJ0; 4MJ1; 5FUA; 6ESB; 6GG0

1 entry

BK polyomavirus (strain AS) (BKPyV)

VP1_POVBA Major capsid protein VP1 (Major structural protein VP1)

1 entry

Bos taurus papillomavirus 2 (Bovine papillomavirus 2)

VL1_BPV2 Major capsid protein L1

1 entry

Bos taurus papillomavirus 4 (Bovine papillomavirus 4)

VL1_BPV4 Major capsid protein L1

1 entry

Cauliflower mosaic virus (strain BBC) (CaMV)

CAPSD_CAMVE Capsid protein (CP) (Coat protein)

1 entry

Cauliflower mosaic virus (strain D/H) (CaMV)

CAPSD_CAMVD Capsid protein (CP) (Coat protein)

1 entry

Cauliflower mosaic virus (strain NY8153) (CaMV)

CAPSD_CAMVN Capsid protein (CP) (Coat protein)

1 entry

Enterobacteria phage HK97 (Bacteriophage HK97)

CAPSD_BPHK7 Major capsid protein (Gene product 5) (gp5) (Major head protein) [Cleaved into: Scaffolding domain ...

pdb 1IF0; 1OHG; 2FRP; 2FS3; 2FSY; 2FT1; 2FTE; 2GP1; 3DDX; 3E8K; 3J1A; 3QPR

1 entry

Enterobacteria phage P21 (Bacteriophage 21) (Bacteriophage P21)

CAPSD_BPP21 Major capsid protein (Gene product 7) (Gene product E) (gpE) (Major head protein)

1 entry

Hamster polyomavirus (HaPyV) (Mesocricetus auratus polyomavirus 1)

VP1_POVHA Major capsid protein VP1 (Major structural protein VP1)

1 entry

Human papillomavirus 12

VL1_HPV12 Major capsid protein L1

1 entry

Human papillomavirus 13

VL1_HPV13 Major capsid protein L1

1 entry

Human papillomavirus 19

VL1_HPV19 Major capsid protein L1

1 entry

Human papillomavirus 20

VL1_HPV20 Major capsid protein L1

1 entry

Human papillomavirus 23

VL1_HPV23 Major capsid protein L1

1 entry

Human papillomavirus 25

VL1_HPV25 Major capsid protein L1

1 entry

Human papillomavirus 27

VL1_HPV27 Major capsid protein L1

1 entry

Human papillomavirus 28

VL1_HPV28 Major capsid protein L1

1 entry

Human papillomavirus 3

VL1_HPV03 Major capsid protein L1

1 entry

Human papillomavirus 36

VL1_HPV36 Major capsid protein L1

1 entry

Human papillomavirus 37

VL1_HPV37 Major capsid protein L1

1 entry

Human papillomavirus 38

VL1_HPV38 Major capsid protein L1

1 entry

Human papillomavirus 40

VL1_HPV40 Major capsid protein L1

1 entry

Human papillomavirus 43

VL1_HPV43 Major capsid protein L1

1 entry

Human papillomavirus 45

VL1_HPV45 Major capsid protein L1

1 entry

Human papillomavirus 51

VL1_HPV51 Major capsid protein L1

1 entry

Human papillomavirus 57

VL1_HPV57 Major capsid protein L1

1 entry

Human papillomavirus 58

VL1_HPV58 Major capsid protein L1

pdb 5Y9C; 5Y9E; 6IGC; 6IGD; 7DN5; 7DNH; 7DNK; 7DNL

1 entry

Human papillomavirus 62

VL1_HPV62 Major capsid protein L1

1 entry

Human papillomavirus 66

VL1_HPV66 Major capsid protein L1

1 entry

Human papillomavirus 67

VL1_HPV67 Major capsid protein L1

1 entry

Human papillomavirus 68

VL1_HPV68 Major capsid protein L1

1 entry

Human papillomavirus 7

VL1_HPV07 Major capsid protein L1

1 entry

Human papillomavirus type 26

VL1_HPV26 Major capsid protein L1

1 entry

Human papillomavirus type 2a

VL1_HPV2A Major capsid protein L1

1 entry

Human papillomavirus type 34

VL1_HPV34 Major capsid protein L1

1 entry

Human papillomavirus type 49

VL1_HPV49 Major capsid protein L1

1 entry

Human papillomavirus type 53

VL1_HPV53 Major capsid protein L1

1 entry

Human papillomavirus type 54

VL1_HPV54 Major capsid protein L1

1 entry

Human papillomavirus type 5b

VL1_HPV5B Major capsid protein L1

1 entry

Human papillomavirus type 6a

VL1_HPV6A Major capsid protein L1

pdb 6L31

1 entry

Human papillomavirus type 6b

VL1_HPV6B Major capsid protein L1

1 entry

Human papillomavirus type 8

VL1_HPV08 Major capsid protein L1

1 entry

Human papillomavirus type ME180

VL1_HPVME Major capsid protein L1

1 entry

KI polyomavirus (isolate Stockholm 350) (KIPyV)

VP1_POVKI Major capsid protein VP1 (Major structural protein VP1)

1 entry

KI polyomavirus (isolate Stockholm 380) (KIPyV)

VP1_POVK3 Major capsid protein VP1 (Major structural protein VP1)

1 entry

KI polyomavirus (isolate Stockholm 60) (KIPyV)

VP1_POVK6 Major capsid protein VP1 (Major structural protein VP1)

pdb 3S7V

1 entry

Murine polyomavirus (strain A3) (MPyV)

VP1_POVM3 Major capsid protein VP1 (Major structural protein VP1)

1 entry

Murine polyomavirus (strain Crawford small-plaque) (MPyV)

VP1_POVMC Major capsid protein VP1 (Major structural protein VP1)

1 entry

Murine polyomavirus (strain Kilham) (MPyV) (Murine pneumotropic virus)

VP1_POVMK Major capsid protein VP1 (Major structural protein VP1)

1 entry

Murine polyomavirus (strain P16 small-plaque) (MPyV)

VP1_POVMP Capsid protein VP1

pdb 1CN3; 1SID; 1SIE; 1VPN; 1VPS; 5CPU; 5CPW; 5CPX; 5CPY; 5CPZ; 5CQ0; 7K25

1 entry

Pygmy chimpanzee papillomavirus type 1 (PCPV-1)

VL1_PCPV1 Major capsid protein L1

1 entry

Serratia phage KSP100 (Serratia marcescens bacteriophage KSP100)

CAPSD_BPSK1 Major capsid protein (Virion protein G)

1 entry

Simian virus 12 (strain wt100) (SV-12) (Baboon polyomavirus 1)

VP1_POVS1 Major capsid protein VP1 (Major structural protein VP1)