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CAPSD_PAVCB
ID   CAPSD_PAVCB             Reviewed;         727 AA.
AC   Q11213;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1996, sequence version 1.
DT   03-AUG-2022, entry version 103.
DE   RecName: Full=Capsid protein VP1;
DE   AltName: Full=Coat protein VP1;
OS   Canine parvovirus type 2 (isolate Dog/United States/CPV-b/1978) (CPV-2).
OC   Viruses; Monodnaviria; Shotokuvirae; Cossaviricota; Quintoviricetes;
OC   Piccovirales; Parvoviridae; Parvovirinae; Protoparvovirus.
OX   NCBI_TaxID=59284;
OH   NCBI_TaxID=9615; Canis lupus familiaris (Dog) (Canis familiaris).
OH   NCBI_TaxID=9685; Felis catus (Cat) (Felis silvestris catus).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=1647068; DOI=10.1016/0042-6822(91)90132-u;
RA   Parrish C.R.;
RT   "Mapping specific functions in the capsid structure of canine parvovirus
RT   and feline panleukopenia virus using infectious plasmid clones.";
RL   Virology 183:195-205(1991).
RN   [2]
RP   X-RAY CRYSTALLOGRAPHY (3.0 ANGSTROMS) OF 180-727.
RX   PubMed=8377200; DOI=10.1006/jmbi.1993.1502;
RA   Wu H., Rossmann M.G.;
RT   "The canine parvovirus empty capsid structure.";
RL   J. Mol. Biol. 233:231-244(1993).
CC   -!- FUNCTION: Capsid protein self-assembles to form an icosahedral capsid
CC       with a T=1 symmetry, about 22 nm in diameter, and consisting of 60
CC       copies of two size variants of the capsid proteins, VP1 and VP2, which
CC       differ by the presence of an N-terminal extension in the minor protein
CC       VP1. The capsid encapsulates the genomic ssDNA. Capsid proteins are
CC       responsible for the attachment to host cell receptor TFRC. This
CC       attachment induces virion internalization predominantly through
CC       clathrin-endocytosis. Binding to the host receptors also induces capsid
CC       rearrangements leading to surface exposure of VP1 N-terminus,
CC       specifically its phospholipase A2-like region and nuclear localization
CC       signal(s). VP1 N-terminus might serve as a lipolytic enzyme to breach
CC       the endosomal membrane during entry into host cell. Intracytoplasmic
CC       transport involves microtubules and interaction between capsid proteins
CC       and host dynein. Exposure of nuclear localization signal probably
CC       allows nuclear import of capsids (By similarity). {ECO:0000250}.
CC   -!- SUBUNIT: Interacts with host TFRC. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000250}. Host nucleus {ECO:0000305}.
CC   -!- ALTERNATIVE PRODUCTS:
CC       Event=Alternative splicing; Named isoforms=2;
CC       Name=VP1;
CC         IsoId=Q11213-1; Sequence=Displayed;
CC       Name=VP2;
CC         IsoId=Q11213-2; Sequence=VSP_041138;
CC   -!- DOMAIN: The N-terminus of VP1 is sequestered within the mature capsid.
CC       It contains a phospholipase A2-like region and nuclear localization
CC       signals that might be exposed by capsid modifications during virus
CC       entry (By similarity). {ECO:0000250}.
CC   -!- MISCELLANEOUS: The capsids of autonomous parvoviruses expose a
CC       proportion of VP2 N-terminus and part of that sequence can be cleaved
CC       of to form VP3. {ECO:0000250}.
CC   -!- MISCELLANEOUS: [Isoform VP1]: Minor splicing isoform.
CC   -!- MISCELLANEOUS: [Isoform VP2]: Major splicing isoform produced by
CC       deletion of the initiating AUG for VP1 and downstream translation of
CC       VP2. {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the parvoviridae capsid protein family.
CC       {ECO:0000305}.
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DR   EMBL; M38245; AAB02799.1; -; Genomic_DNA.
DR   EMBL; M38245; AAB02800.1; -; Genomic_DNA.
DR   PDB; 2CAS; X-ray; 3.00 A; A=180-727.
DR   PDB; 6OAS; EM; 3.00 A; 1=180-727.
DR   PDBsum; 2CAS; -.
DR   PDBsum; 6OAS; -.
DR   SMR; Q11213; -.
DR   ABCD; Q11213; 1 sequenced antibody.
DR   EvolutionaryTrace; Q11213; -.
DR   GO; GO:0042025; C:host cell nucleus; IEA:UniProtKB-SubCell.
DR   GO; GO:0039615; C:T=1 icosahedral viral capsid; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0005198; F:structural molecule activity; IEA:InterPro.
DR   GO; GO:0098671; P:adhesion receptor-mediated virion attachment to host cell; IEA:UniProtKB-KW.
DR   GO; GO:0075512; P:clathrin-dependent endocytosis of virus by host cell; IEA:UniProtKB-KW.
DR   GO; GO:0098670; P:entry receptor-mediated virion attachment to host cell; IEA:UniProtKB-KW.
DR   GO; GO:0075521; P:microtubule-dependent intracellular transport of viral material towards nucleus; IEA:UniProtKB-KW.
DR   GO; GO:0039665; P:permeabilization of host organelle membrane involved in viral entry into host cell; IEA:UniProtKB-KW.
DR   GO; GO:0099008; P:viral entry via permeabilization of inner membrane; IEA:UniProtKB-KW.
DR   GO; GO:0075732; P:viral penetration into host nucleus; IEA:UniProtKB-KW.
DR   Gene3D; 2.170.30.10; -; 1.
DR   InterPro; IPR016184; Capsid/spike_ssDNA_virus.
DR   InterPro; IPR001403; Parvovirus_coat.
DR   InterPro; IPR013607; Phospholipase_A2-like.
DR   InterPro; IPR036952; VP1/VP2.
DR   Pfam; PF00740; Parvo_coat; 1.
DR   Pfam; PF08398; Phospholip_A2_4; 1.
DR   SUPFAM; SSF88645; SSF88645; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Alternative splicing; Capsid protein;
KW   Clathrin-mediated endocytosis of virus by host;
KW   Cytoplasmic inwards viral transport; Disulfide bond; Host nucleus;
KW   Host-virus interaction; Magnesium; Metal-binding;
KW   Microtubular inwards viral transport; T=1 icosahedral capsid protein;
KW   Viral attachment to host adhesion receptor; Viral attachment to host cell;
KW   Viral attachment to host entry receptor;
KW   Viral penetration into host cytoplasm; Viral penetration into host nucleus;
KW   Viral penetration via permeabilization of host membrane; Virion;
KW   Virus endocytosis by host; Virus entry into host cell.
FT   CHAIN           1..727
FT                   /note="Capsid protein VP1"
FT                   /id="PRO_0000039427"
FT   REGION          1..39
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          19..64
FT                   /note="Phospholipase A2-like"
FT                   /evidence="ECO:0000250"
FT   REGION          95..120
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          141..184
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   MOTIF           4..13
FT                   /note="Nuclear localization signal"
FT                   /evidence="ECO:0000255"
FT   BINDING         323
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   DISULFID        633..637
FT                   /evidence="ECO:0000250"
FT   VAR_SEQ         1..143
FT                   /note="Missing (in isoform VP2)"
FT                   /evidence="ECO:0000305"
FT                   /id="VSP_041138"
FT   STRAND          192..196
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          198..215
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          223..227
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           230..233
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           239..241
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          245..254
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           260..263
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           266..275
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          276..299
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          305..310
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          316..321
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           331..334
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          349..354
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          358..361
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          374..378
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           381..383
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           389..392
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          395..398
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          419..421
FT                   /evidence="ECO:0007829|PDB:6OAS"
FT   HELIX           425..427
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   TURN            470..472
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          476..480
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          488..491
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          494..497
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          506..508
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          510..513
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          520..523
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           525..527
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          539..542
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           553..555
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           569..571
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           587..589
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          613..615
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          619..621
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          630..635
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          640..645
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          657..659
FT                   /evidence="ECO:0007829|PDB:6OAS"
FT   STRAND          666..682
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          687..689
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   TURN            698..700
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   HELIX           701..704
FT                   /evidence="ECO:0007829|PDB:2CAS"
FT   STRAND          721..723
FT                   /evidence="ECO:0007829|PDB:2CAS"
SQ   SEQUENCE   727 AA;  80343 MW;  115F3E1A79098EBE CRC64;
     MAPPAKRARR GLVPPGYKYL GPGNSLDQGE PTNPSDAAAK EHDEAYAAYL RSGKNPYLYF
     SPADQRFIDQ TKDAKDWGGK IGHYFFRAKK AIAPVLTDTP DHPSTSRPTK PTKRSKPPPH
     IFINLAKKKK AGAGQVKRDN LAPMSDGAVQ PDGGQPAVRN ERATGSGNGS GGGGGGGSGG
     VGISTGTFNN QTEFKFLENG WVEITANSSR LVHLNMPESE NYRRVVVNNM DKTAVNGNMA
     LDDIHAQIVT PWSLVDANAW GVWFNPGDWQ LIVNTMSELH LVSFEQEIFN VVLKTVSESA
     TQPPTKVYNN DLTASLMVAL DSNNTMPFTP AAMRSETLGF YPWKPTIPTP WRYYFQWDRT
     LIPSHTGTSG TPTNIYHGTD PDDVQFYTIE NSVPVHLLRT GDEFATGTFF FDCKPCRLTH
     TWQTNRALGL PPFLNSLPQS EGATNFGDIG VQQDKRRGVT QMGNTNYITE ATIMRPAEVG
     YSAPYYSFEA STQGPFKTPI AAGRGGAQTD ENQAADGNPR YAFGRQHGQK TTTTGETPER
     FTYIAHQDTG RYPEGDWIQN INFNLPVTND NVLLPTDPIG GKTGINYTNI FNTYGPLTAL
     NNVPPVYPNG QIWDKEFDTD LKPRLHVNAP FVCQNNCPGQ LFVKVAPNLT NEYDPDASAN
     MSRIVTYSDF WWKGKLVFKA KLRASHTWNP IQQMSINVDN QFNYVPSNIG GMKIVYEKSQ
     LAPRKLY
 
 
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