ID   UBACT_METI4             Reviewed;          65 AA.
AC   B3DVI3;
DT   25-OCT-2017, integrated into UniProtKB/Swiss-Prot.
DT   22-JUL-2008, sequence version 1.
DT   25-MAY-2022, entry version 43.
DE   RecName: Full=Prokaryotic ubiquitin-like protein UBact {ECO:0000303|PubMed:28087277};
GN   Name=ubact {ECO:0000303|PubMed:28087277};
GN   OrderedLocusNames=Minf_1282 {ECO:0000312|EMBL:ACD83336.1};
OS   Methylacidiphilum infernorum (isolate V4) (Methylokorus infernorum (strain
OS   V4)).
OC   Bacteria; Verrucomicrobia; Methylacidiphilae; Methylacidiphilales;
OC   Methylacidiphilaceae; Methylacidiphilum.
OX   NCBI_TaxID=481448;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Isolate V4;
RX   PubMed=18593465; DOI=10.1186/1745-6150-3-26;
RA   Hou S., Makarova K.S., Saw J.H., Senin P., Ly B.V., Zhou Z., Ren Y.,
RA   Wang J., Galperin M.Y., Omelchenko M.V., Wolf Y.I., Yutin N., Koonin E.V.,
RA   Stott M.B., Mountain B.W., Crowe M.A., Smirnova A.V., Dunfield P.F.,
RA   Feng L., Wang L., Alam M.;
RT   "Complete genome sequence of the extremely acidophilic methanotroph isolate
RT   V4, Methylacidiphilum infernorum, a representative of the bacterial phylum
RT   Verrucomicrobia.";
RL   Biol. Direct 3:26-26(2008).
RN   [2]
RP   PREDICTED FUNCTION.
RC   STRAIN=Isolate V4;
RX   PubMed=28087277; DOI=10.1016/j.bbrc.2017.01.037;
RA   Lehmann G., Udasin R.G., Livneh I., Ciechanover A.;
RT   "Identification of UBact, a ubiquitin-like protein, along with other
RT   homologous components of a conjugation system and the proteasome in
RT   different gram-negative bacteria.";
RL   Biochem. Biophys. Res. Commun. 483:946-950(2017).
CC   -!- FUNCTION: May function as a protein modifier covalently attached to
CC       lysine residues of substrate proteins. This may serve to target the
CC       modified proteins for degradation by proteasomes.
CC       {ECO:0000305|PubMed:28087277}.
CC   -!- SIMILARITY: Belongs to the ubiquitin-like protein UBact family.
CC       {ECO:0000255|HAMAP-Rule:MF_02133}.
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DR   EMBL; CP000975; ACD83336.1; -; Genomic_DNA.
DR   AlphaFoldDB; B3DVI3; -.
DR   SMR; B3DVI3; -.
DR   STRING; 481448.Minf_1282; -.
DR   EnsemblBacteria; ACD83336; ACD83336; Minf_1282.
DR   KEGG; min:Minf_1282; -.
DR   eggNOG; ENOG5033IZH; Bacteria.
DR   HOGENOM; CLU_207029_0_0_0; -.
DR   OMA; FRMEERR; -.
DR   Proteomes; UP000009149; Chromosome.
DR   GO; GO:0031386; F:protein tag; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_02133; UBact; 1.
DR   InterPro; IPR037543; UBact.
PE   3: Inferred from homology;
KW   Isopeptide bond; Ubl conjugation pathway.
FT   CHAIN           1..65
FT                   /note="Prokaryotic ubiquitin-like protein UBact"
FT                   /id="PRO_0000441766"
FT   REGION          1..65
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        1..17
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        39..65
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   CROSSLNK        65
FT                   /note="Isoglutamyl lysine isopeptide (Glu-Lys) (interchain
FT                   with K-? in acceptor proteins)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   65 AA;  7216 MW;  D7B20F49F532FA2A CRC64;
     MEVNMPTTEQ GQKNKQMIPS PGPGGGSGPG PQAPKVEKPN TEEILKRMRK VDPDQARRYR
     QRTGE