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Protein

Minor capsid protein L2

Gene

L2

Organism
Human papillomavirus type 19
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Protein inferred from homologyi

Functioni

Minor protein of the capsid that localizes along the inner surface of the virion, within the central cavities beneath the L1 pentamers. Plays a role in capsid stabilization through interaction with the major capsid protein L1. Once the virion enters the host cell, L2 escorts the genomic DNA into the nucleus by promoting escape from the endosomal compartments and traffic through the host Golgi network. Plays a role through its interaction with host dynein in the intracellular microtubule-dependent transport of viral capsid toward the nucleus. Mediates the viral genome import into the nucleus through binding to host importins. Once within the nucleus, L2 localizes viral genomes to host PML bodies in order to activate early gene expression for establishment of infection. Later on, promotes late gene expression by interacting with the viral E2 protein and by inhibiting its transcriptional activation functions. During virion assembly, encapsidates the genome by direct interaction with the viral DNA.UniRule annotation

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionDNA-binding
Biological processCytoplasmic inwards viral transport, Host-virus interaction, Microtubular inwards viral transport, Viral penetration into host nucleus, Virus entry into host cell

Names & Taxonomyi

Protein namesi
Recommended name:
Minor capsid protein L2UniRule annotation
Gene namesi
Name:L2UniRule annotation
OrganismiHuman papillomavirus type 19
Taxonomic identifieri10608 [NCBI]
Taxonomic lineageiVirusesdsDNA viruses, no RNA stagePapillomaviridaeBetapapillomavirus
Virus hostiHomo sapiens (Human) [TaxID: 9606]
Proteomesi
  • UP000009110 Componenti: Genome

Subcellular locationi

  • Virion UniRule annotation
  • Host nucleus UniRule annotation

GO - Cellular componenti

Keywords - Cellular componenti

Capsid protein, Host nucleus, Virion

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001335861 – 520Minor capsid protein L2Add BLAST520

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi19 ↔ 25UniRule annotation

Post-translational modificationi

Highly phosphorylated.UniRule annotation

Keywords - PTMi

Disulfide bond, Phosphoprotein

Expressioni

Keywords - Developmental stagei

Late protein

Interactioni

Subunit structurei

Interacts with major capsid protein L1. Interacts with E2; this interaction inhibits E2 transcriptional activity but not the DNA replication function E2. Interacts with host HSPA8; this interaction is required for L2 nuclear translocation. Interacts with host importins KPNB2 and KPNB3. Forms a complex with importin alpha2-beta1 heterodimers via interaction with the importin alpha2 adapter. Interacts with host DYNLT1; this interaction is essential for virus intracellular transport during entry.UniRule annotation

Family & Domainsi

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Motifi1 – 10Nuclear localization signalUniRule annotation10
Motifi511 – 519Nuclear localization signalUniRule annotation9

Sequence similaritiesi

Belongs to the papillomaviridae L2 protein family.UniRule annotation

Phylogenomic databases

OrthoDBiVOG090000CV.

Family and domain databases

HAMAPiMF_04003. PPV_L2. 1 hit.
InterProiView protein in InterPro
IPR000784. Late_L2.
PfamiView protein in Pfam
PF00513. Late_protein_L2. 1 hit.

Sequencei

Sequence statusi: Complete.

P36752-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MARARRTKRD SATNIYRTCK QAGTCPPDVI NKVEQTTIAD KILQYGSAGV
60 70 80 90 100
FFGGLGISTG KGTGGATGYV PLGEGPVRVG GTATVIRPSL VPDTIGPSDI
110 120 130 140 150
IPVDTLNPVE PTTSSIVPLT EASGSDLLPG EVETIAEVHP TPSIPSTDTP
160 170 180 190 200
VTTTSSGASA VLEVAPEPVP PSRVRVTRTQ YHNPSFQILT ESTPTQGESS
210 220 230 240 250
LADHILVTSG SGGQTIGSSG SDLIELQEFP TRYSFEIEEP TPPRQSSTPI
260 270 280 290 300
QRLRTAFRRR GGLTNRRLVQ QVAVDDPIFL TQPSRLVSFQ FDNPAFEEEV
310 320 330 340 350
TQIFEQDLDN FREPPNRDFL DVQTLGRPQY SETPSGYIRV SRLGQRRTIR
360 370 380 390 400
TRSGAQIGSQ VHFYRDLSTI DSEDPIELQL LGQHSGDASI VQGNTESTFI
410 420 430 440 450
NINIDENPLA EDYSITANSE DLLLDEAQED FSGSQLVVGG RRSTSTYTVP
460 470 480 490 500
QFETTRSGSY YTQDTKGYYV AYPEDRSTSK DIIYPMPDLP VVIIHTYDTS
510 520
GDFYLHPSLR KRFKRKRKYL
Length:520
Mass (Da):57,019
Last modified:June 1, 1994 - v1
Checksum:iF428B9097A881AE1
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X74470 Genomic DNA. Translation: CAA52522.1.
PIRiS36489.

Similar proteinsi

Entry informationi

Entry nameiVL2_HPV19
AccessioniPrimary (citable) accession number: P36752
Entry historyiIntegrated into UniProtKB/Swiss-Prot: June 1, 1994
Last sequence update: June 1, 1994
Last modified: June 7, 2017
This is version 61 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families