ID   RPC1_BPHC1              Reviewed;         191 AA.
AC   P51704;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1996, sequence version 1.
DT   03-AUG-2022, entry version 78.
DE   RecName: Full=Repressor protein CI;
GN   Name=CI;
OS   Haemophilus phage HP1 (strain HP1c1) (Bacteriophage HP1).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Myoviridae; Peduovirinae; Hpunavirus.
OX   NCBI_TaxID=1289570;
OH   NCBI_TaxID=727; Haemophilus influenzae.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=7997180; DOI=10.1111/j.1365-2958.1994.tb00462.x;
RA   Esposito D., Scocca J.J.;
RT   "Identification of an HP1 phage protein required for site-specific
RT   excision.";
RL   Mol. Microbiol. 13:685-695(1994).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=8710508; DOI=10.1093/nar/24.12.2360;
RA   Esposito D., Fitzmaurice W.P., Benjamin R.C., Goodman S.D., Waldman A.S.,
RA   Scocca J.J.;
RT   "The complete nucleotide sequence of bacteriophage HP1 DNA.";
RL   Nucleic Acids Res. 24:2360-2368(1996).
CC   -!- FUNCTION: Repressor of lysogeny.
CC   -!- SIMILARITY: Belongs to the CI repressor protein family. {ECO:0000305}.
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DR   EMBL; U24159; AAB09187.1; -; Genomic_DNA.
DR   PIR; S69508; S69508.
DR   RefSeq; NP_043471.1; NC_001697.1.
DR   SMR; P51704; -.
DR   GeneID; 1261147; -.
DR   KEGG; vg:1261147; -.
DR   Proteomes; UP000001713; Genome.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0045892; P:negative regulation of transcription, DNA-templated; IEA:InterPro.
DR   GO; GO:0051259; P:protein complex oligomerization; IEA:InterPro.
DR   Gene3D; 1.10.260.40; -; 1.
DR   InterPro; IPR010982; Lambda_DNA-bd_dom_sf.
DR   InterPro; IPR032499; Phage_CI_C.
DR   InterPro; IPR010744; Phage_CI_repr.
DR   Pfam; PF16452; Phage_CI_C; 1.
DR   Pfam; PF07022; Phage_CI_repr; 1.
PE   3: Inferred from homology;
KW   DNA-binding; Reference proteome; Repressor; Transcription;
KW   Transcription regulation.
FT   CHAIN           1..191
FT                   /note="Repressor protein CI"
FT                   /id="PRO_0000165305"
SQ   SEQUENCE   191 AA;  21844 MW;  E2B00C875FD4369D CRC64;
     MKEFIGGKDV ISRIMEAYGF ANRRLLAEHL GMPHSTFGTW AKRGFFPAEL VIRCVSETGA
     RLDYVAYGNE PIFDNSDDLK YFHTIKLESG KSFIVENKPF LLPYLPNLDS RESYDKVFRI
     DEDNHTYFAT SDYGNLVDGE YFVIVENSHL IRYITVLPAG KIRVDGGKFS FECELSDIDV
     VGKVILKMEK M