ID   PRO_BPLSK               Reviewed;         178 AA.
AC   O21873;
DT   02-NOV-2016, integrated into UniProtKB/Swiss-Prot.
DT   01-JAN-1998, sequence version 1.
DT   03-AUG-2022, entry version 55.
DE   RecName: Full=Probable capsid maturation protease;
DE            EC=3.4.-.-;
DE   AltName: Full=Gene product 5;
DE            Short=gp5;
OS   Lactococcus phage SK1 (Lactococcus lactis bacteriophage SK1).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Siphoviridae; Skunavirus.
OX   NCBI_TaxID=31532;
OH   NCBI_TaxID=1358; Lactococcus lactis.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=9383189; DOI=10.1046/j.1365-2958.1997.5491926.x;
RA   Chandry P.S., Moore S.C., Boyce J.D., Davidson B.E., Hillier A.J.;
RT   "Analysis of the DNA sequence, gene expression, origin of replication and
RT   modular structure of the Lactococcus lactis lytic bacteriophage sk1.";
RL   Mol. Microbiol. 26:49-64(1997).
CC   -!- FUNCTION: Probable capsid maturation protease.
CC       {ECO:0000250|UniProtKB:D3WAC4}.
CC   -!- SIMILARITY: Belongs to the skunalikevirus capsid maturation protease
CC       family. {ECO:0000305}.
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DR   EMBL; AF011378; AAB70044.1; -; Genomic_DNA.
DR   RefSeq; NP_044951.1; NC_001835.1.
DR   GeneID; 1261303; -.
DR   KEGG; vg:1261303; -.
DR   Proteomes; UP000000839; Genome.
DR   GO; GO:0008233; F:peptidase activity; IEA:UniProtKB-KW.
DR   GO; GO:0006508; P:proteolysis; IEA:UniProtKB-KW.
DR   GO; GO:0046797; P:viral procapsid maturation; IEA:UniProtKB-KW.
DR   InterPro; IPR006433; Prohead_protease.
DR   Pfam; PF04586; Peptidase_S78; 1.
PE   3: Inferred from homology;
KW   Coiled coil; Hydrolase; Protease; Reference proteome;
KW   Viral capsid assembly; Viral capsid maturation;
KW   Viral release from host cell.
FT   CHAIN           1..178
FT                   /note="Probable capsid maturation protease"
FT                   /id="PRO_0000438258"
FT   COILED          146..178
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   178 AA;  19947 MW;  516E4A1FDA42712D CRC64;
     MKLITNSAEI KVTENEDGSK SFQGIGSEVG VENRNGIVLT PNCIEFARER YPLLYEHGAG
     SSEVIGDAKV YYDLASNKYL TDFTLYDNAP NINKAVENGA FDSLSIAYYI TDYEFNENDA
     LVVNKAQFKE ISLVSVPADP NAKFIQNALG EELTEERNKI IESRNALKEI EDIKKKYE