ID   SEGB_BPT4               Reviewed;         221 AA.
AC   P13325; Q38046; Q9T0V2;
DT   01-JAN-1990, integrated into UniProtKB/Swiss-Prot.
DT   15-AUG-2003, sequence version 4.
DT   23-FEB-2022, entry version 95.
DE   RecName: Full=Putative endonuclease segB;
DE            EC=3.1.-.-;
DE   AltName: Full=Endodeoxyribonuclease segB;
GN   Name=segB; Synonyms=trnA.1;
OS   Enterobacteria phage T4 (Bacteriophage T4).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Myoviridae; Tevenvirinae; Tequatrovirus.
OX   NCBI_TaxID=10665;
OH   NCBI_TaxID=562; Escherichia coli.
RN   [1]
RP   PRELIMINARY NUCLEOTIDE SEQUENCE.
RX   PubMed=4057254; DOI=10.1016/0022-2836(85)90071-3;
RA   Broida J., Abelson J.;
RT   "Sequence organization and control of transcription in the bacteriophage T4
RT   tRNA region.";
RL   J. Mol. Biol. 185:545-563(1985).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Kadyrov F.A., Kryukov V.M.;
RL   Submitted (FEB-1996) to the EMBL/GenBank/DDBJ databases.
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=12626685; DOI=10.1128/mmbr.67.1.86-156.2003;
RA   Miller E.S., Kutter E., Mosig G., Arisaka F., Kunisawa T., Ruger W.;
RT   "Bacteriophage T4 genome.";
RL   Microbiol. Mol. Biol. Rev. 67:86-156(2003).
RN   [4]
RP   IDENTIFICATION, AND POSSIBLE FUNCTION.
RX   PubMed=1631169; DOI=10.1073/pnas.89.14.6658;
RA   Sharma M., Ellis R.L., Hinton D.M.;
RT   "Identification of a family of bacteriophage T4 genes encoding proteins
RT   similar to those present in group I introns of fungi and phage.";
RL   Proc. Natl. Acad. Sci. U.S.A. 89:6658-6662(1992).
CC   -!- FUNCTION: Probably involved in the movement of the endonuclease-
CC       encoding DNA.
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000250};
CC   -!- SIMILARITY: To endonucleases of group I introns of fungi and phage.
CC       {ECO:0000305}.
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DR   EMBL; X03016; CAA26807.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; Z69338; CAA93270.1; -; Genomic_DNA.
DR   EMBL; AF158101; AAD42655.2; -; Genomic_DNA.
DR   RefSeq; NP_049745.2; NC_000866.4.
DR   SMR; P13325; -.
DR   GeneID; 1258659; -.
DR   KEGG; vg:1258659; -.
DR   Proteomes; UP000009087; Genome.
DR   GO; GO:0004520; F:endodeoxyribonuclease activity; IDA:CACAO.
DR   Gene3D; 3.40.1440.10; -; 1.
DR   InterPro; IPR000305; GIY-YIG_endonuc.
DR   InterPro; IPR035901; GIY-YIG_endonuc_sf.
DR   Pfam; PF01541; GIY-YIG; 1.
DR   SMART; SM00465; GIYc; 1.
DR   SUPFAM; SSF82771; SSF82771; 1.
DR   PROSITE; PS50164; GIY_YIG; 1.
PE   4: Predicted;
KW   Endonuclease; Hydrolase; Magnesium; Nuclease; Reference proteome.
FT   CHAIN           1..221
FT                   /note="Putative endonuclease segB"
FT                   /id="PRO_0000164981"
FT   DOMAIN          1..84
FT                   /note="GIY-YIG"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00977"
FT   CONFLICT        111
FT                   /note="G -> E (in Ref. 2; CAA93270)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   221 AA;  26074 MW;  49C598DFC6E56D6D CRC64;
     MFYYTYKITN KINNKIYIGV HSTENLDDGY MGSGKLLKRA QDKYGIENFS KEILEYFDDK
     ESMLEAEKNI VTEEFLNRPD VYNLKLGGEG GWDHVNIPGM LNQKKDASLK GAKSFKSRFE
     NDILLQEKYR KIGSNVFKRL WSTPEYREKF LNNSRFLNKH HTPETINKMK ESHAKNNHQK
     GEKNSQFGMM WIHSLDEKVS KRIKKTDPIP EGWFKGRKMK F