ID   RELB4_METJA             Reviewed;          84 AA.
AC   Q58572;
DT   01-JUN-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   25-MAY-2022, entry version 79.
DE   RecName: Full=Putative antitoxin RelB4;
GN   Name=relB4; OrderedLocusNames=MJ1172;
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: Antitoxin component of a type II toxin-antitoxin (TA) system.
CC       Its cognate toxin is RelE4 (Potential). {ECO:0000305}.
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DR   EMBL; L77117; AAB99187.1; -; Genomic_DNA.
DR   PIR; C64446; C64446.
DR   AlphaFoldDB; Q58572; -.
DR   SMR; Q58572; -.
DR   STRING; 243232.MJ_1172; -.
DR   EnsemblBacteria; AAB99187; AAB99187; MJ_1172.
DR   KEGG; mja:MJ_1172; -.
DR   eggNOG; arCOG05071; Archaea.
DR   HOGENOM; CLU_189630_0_0_2; -.
DR   InParanoid; Q58572; -.
DR   OMA; INVNERT; -.
DR   PhylomeDB; Q58572; -.
DR   Proteomes; UP000000805; Chromosome.
DR   InterPro; IPR020271; Uncharacterised_MJ1172.
DR   Pfam; PF10884; DUF2683; 1.
PE   4: Predicted;
KW   Reference proteome; Toxin-antitoxin system.
FT   CHAIN           1..84
FT                   /note="Putative antitoxin RelB4"
FT                   /id="PRO_0000107199"
SQ   SEQUENCE   84 AA;  9986 MW;  4B7837421CBADAE4 CRC64;
     MILMVKAIVD ITDENNRIIN IVKAKYNLRD KSQAINKIIE EYAEFLLEDE LKPEYIEKIR
     NIMKNEKPIY IGSIENLKKR YLGE