ID   VAPB3_METJA             Reviewed;          77 AA.
AC   Q58522;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   25-MAY-2022, entry version 86.
DE   RecName: Full=Putative antitoxin VapB3 {ECO:0000255|HAMAP-Rule:MF_00794};
GN   Name=vapB3; OrderedLocusNames=MJ1122;
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: Possibly the antitoxin component of a type II toxin-antitoxin
CC       (TA) system. Its cognate toxin is VapC3 (Potential).
CC       {ECO:0000255|HAMAP-Rule:MF_00794}.
CC   -!- SIMILARITY: Belongs to the UPF0330 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00794}.
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DR   EMBL; L77117; AAB99124.1; -; Genomic_DNA.
DR   PIR; A64440; A64440.
DR   AlphaFoldDB; Q58522; -.
DR   SMR; Q58522; -.
DR   STRING; 243232.MJ_1122; -.
DR   EnsemblBacteria; AAB99124; AAB99124; MJ_1122.
DR   KEGG; mja:MJ_1122; -.
DR   eggNOG; arCOG02681; Archaea.
DR   HOGENOM; CLU_170073_3_0_2; -.
DR   InParanoid; Q58522; -.
DR   OMA; IMIRDEV; -.
DR   PhylomeDB; Q58522; -.
DR   Proteomes; UP000000805; Chromosome.
DR   HAMAP; MF_00794; UPF0330; 1.
DR   InterPro; IPR003847; Put_antitoxin.
DR   Pfam; PF02697; VAPB_antitox; 1.
PE   3: Inferred from homology;
KW   Reference proteome; Toxin-antitoxin system.
FT   CHAIN           1..77
FT                   /note="Putative antitoxin VapB3"
FT                   /id="PRO_0000157108"
SQ   SEQUENCE   77 AA;  9135 MW;  461C4E194C235556 CRC64;
     MINMATITID DDVYKELLKL KGRKSVSEFI KELLEERKRK NLDVFMIAFG SRSEEDVEKL
     KKELKEAEKW MQSLIQV