ID   UBACT_YANXG             Reviewed;          56 AA.
AC   A0A0G0MF47;
DT   25-OCT-2017, integrated into UniProtKB/Swiss-Prot.
DT   22-JUL-2015, sequence version 1.
DT   25-MAY-2022, entry version 15.
DE   RecName: Full=Prokaryotic ubiquitin-like protein UBact {ECO:0000303|PubMed:28087277};
GN   Name=ubact {ECO:0000303|PubMed:28087277};
GN   ORFNames=UT29_C0001G0139 {ECO:0000312|EMBL:KKR02659.1};
OS   Yanofskybacteria sp. (strain GW2011_GWA1_39_13).
OC   Bacteria; Candidatus Yanofskybacteria.
OX   NCBI_TaxID=1619019;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=GW2011_GWA1_39_13;
RA   Brown C.T., Hug L.A., Thomas B.C., Sharon I., Castelle C.J., Singh A.,
RA   Wilkins M.J., Williams K.H., Banfield J.F.;
RT   "rRNA introns, odd ribosomes, and small enigmatic genomes across a large
RT   radiation of phyla.";
RL   Nature 0:0-0(2015).
RN   [2]
RP   PREDICTED FUNCTION, AND DEAMIDATION AT GLN-56.
RC   STRAIN=GW2011_GWA1_39_13;
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   -!- PTM: May be modified by deamidation of its C-terminal glutamine to
CC       glutamate by the adjacently encoded deamidase. This could be a
CC       prerequisite to the subsequent conjugation, as shown in the other
CC       prokaryotic ubiquitin-like protein Pup. {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the ubiquitin-like protein UBact family.
CC       {ECO:0000255|HAMAP-Rule:MF_02133}.
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DR   EMBL; LBWF01000001; KKR02659.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A0G0MF47; -.
DR   SMR; A0A0G0MF47; -.
DR   EnsemblBacteria; KKR02659; KKR02659; UT29_C0001G0139.
DR   Proteomes; UP000034845; Unassembled WGS sequence.
DR   GO; GO:0031386; F:protein tag; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_02133; UBact; 1.
DR   InterPro; IPR037543; UBact.
PE   1: Evidence at protein level;
KW   Isopeptide bond; Ubl conjugation pathway.
FT   CHAIN           1..56
FT                   /note="Prokaryotic ubiquitin-like protein UBact"
FT                   /id="PRO_0000441773"
FT   REGION          1..33
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        10..33
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   MOD_RES         56
FT                   /note="Deamidated glutamine"
FT                   /evidence="ECO:0000305|PubMed:28087277"
FT   CROSSLNK        56
FT                   /note="Isoglutamyl lysine isopeptide (Gln-Lys) (interchain
FT                   with K-? in acceptor proteins)"
FT                   /evidence="ECO:0000305|PubMed:28087277"
SQ   SEQUENCE   56 AA;  6704 MW;  CA64AA4C0D964DC7 CRC64;
     MPQDQQRKKQ FDPNPNRDDS QRKTPVDKEI DDIIDEADEI VKRNKEQAKK KQPSRQ