ID   VAPC2_METJA             Reviewed;         149 AA.
AC   Q58384;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1997, sequence version 1.
DT   03-AUG-2022, entry version 102.
DE   RecName: Full=Ribonuclease VapC2 {ECO:0000255|HAMAP-Rule:MF_00265};
DE            Short=RNase VapC2 {ECO:0000255|HAMAP-Rule:MF_00265};
DE            EC=3.1.-.- {ECO:0000255|HAMAP-Rule:MF_00265};
DE   AltName: Full=Putative toxin VapC2 {ECO:0000255|HAMAP-Rule:MF_00265};
GN   Name=vapC2 {ECO:0000255|HAMAP-Rule:MF_00265}; OrderedLocusNames=MJ0974;
OS   Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM
OS   10045 / NBRC 100440) (Methanococcus jannaschii).
OC   Archaea; Euryarchaeota; Methanomada group; Methanococci; Methanococcales;
OC   Methanocaldococcaceae; Methanocaldococcus.
OX   NCBI_TaxID=243232;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440;
RX   PubMed=8688087; DOI=10.1126/science.273.5278.1058;
RA   Bult C.J., White O., Olsen G.J., Zhou L., Fleischmann R.D., Sutton G.G.,
RA   Blake J.A., FitzGerald L.M., Clayton R.A., Gocayne J.D., Kerlavage A.R.,
RA   Dougherty B.A., Tomb J.-F., Adams M.D., Reich C.I., Overbeek R.,
RA   Kirkness E.F., Weinstock K.G., Merrick J.M., Glodek A., Scott J.L.,
RA   Geoghagen N.S.M., Weidman J.F., Fuhrmann J.L., Nguyen D., Utterback T.R.,
RA   Kelley J.M., Peterson J.D., Sadow P.W., Hanna M.C., Cotton M.D.,
RA   Roberts K.M., Hurst M.A., Kaine B.P., Borodovsky M., Klenk H.-P.,
RA   Fraser C.M., Smith H.O., Woese C.R., Venter J.C.;
RT   "Complete genome sequence of the methanogenic archaeon, Methanococcus
RT   jannaschii.";
RL   Science 273:1058-1073(1996).
RN   [2]
RP   POSSIBLE FUNCTION.
RC   STRAIN=ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440;
RX   PubMed=15718296; DOI=10.1093/nar/gki201;
RA   Pandey D.P., Gerdes K.;
RT   "Toxin-antitoxin loci are highly abundant in free-living but lost from
RT   host-associated prokaryotes.";
RL   Nucleic Acids Res. 33:966-976(2005).
CC   -!- FUNCTION: Toxic component of a type II toxin-antitoxin (TA) system. An
CC       RNase. Its cognate antitoxin is VapB2 (By similarity).
CC       {ECO:0000255|HAMAP-Rule:MF_00265}.
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00265};
CC   -!- SIMILARITY: Belongs to the PINc/VapC protein family.
CC       {ECO:0000255|HAMAP-Rule:MF_00265}.
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DR   EMBL; L77117; AAB98979.1; -; Genomic_DNA.
DR   PIR; F64421; F64421.
DR   AlphaFoldDB; Q58384; -.
DR   SMR; Q58384; -.
DR   STRING; 243232.MJ_0974; -.
DR   EnsemblBacteria; AAB98979; AAB98979; MJ_0974.
DR   KEGG; mja:MJ_0974; -.
DR   eggNOG; arCOG00710; Archaea.
DR   HOGENOM; CLU_134210_1_1_2; -.
DR   InParanoid; Q58384; -.
DR   OMA; KFRFFID; -.
DR   PhylomeDB; Q58384; -.
DR   Proteomes; UP000000805; Chromosome.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004540; F:ribonuclease activity; IEA:InterPro.
DR   HAMAP; MF_00265; VapC_Nob1; 1.
DR   InterPro; IPR029060; PIN-like_dom_sf.
DR   InterPro; IPR002716; PIN_dom.
DR   InterPro; IPR022907; VapC_family.
DR   Pfam; PF01850; PIN; 1.
DR   SMART; SM00670; PINc; 1.
DR   SUPFAM; SSF88723; SSF88723; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Magnesium; Metal-binding; Nuclease; Reference proteome;
KW   Toxin-antitoxin system.
FT   CHAIN           1..149
FT                   /note="Ribonuclease VapC2"
FT                   /id="PRO_0000107125"
FT   DOMAIN          11..149
FT                   /note="PINc"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00265"
FT   BINDING         14
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00265"
FT   BINDING         116
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00265"
SQ   SEQUENCE   149 AA;  17733 MW;  58C7AF9A12FC27C2 CRC64;
     MRRLKMEENK IFFDSNILIY HLCGKVEAKK LIEKVENKEI CGFINPIVIS EVLFFYIRAT
     TNKRHYDIKK HPEILKSLDL DIVFELFSIF QILDLNSEIV KISREIIKKY CLLPNDALIC
     STCKFYKINK ICSFDDDFKR VDFLEIIEI