ID   UBACT_ACEAU             Reviewed;          56 AA.
AC   H5SQ95;
DT   25-OCT-2017, integrated into UniProtKB/Swiss-Prot.
DT   18-APR-2012, 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=HGMM_OP1C026 {ECO:0000312|EMBL:BAL58331.1};
OS   Acetothermus autotrophicum.
OC   Bacteria; Candidatus Bipolaricaulota; Candidatus Acetothermum.
OX   NCBI_TaxID=1446466;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=22303444; DOI=10.1371/journal.pone.0030559;
RA   Takami H., Noguchi H., Takaki Y., Uchiyama I., Toyoda A., Nishi S.,
RA   Chee G.J., Arai W., Nunoura T., Itoh T., Hattori M., Takai K.;
RT   "A deeply branching thermophilic bacterium with an ancient acetyl-CoA
RT   pathway dominates a subsurface ecosystem.";
RL   PLoS ONE 7:E30559-E30559(2012).
RN   [2]
RP   PREDICTED FUNCTION.
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; AP011800; BAL58331.1; -; Genomic_DNA.
DR   AlphaFoldDB; H5SQ95; -.
DR   SMR; H5SQ95; -.
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..56
FT                   /note="Prokaryotic ubiquitin-like protein UBact"
FT                   /id="PRO_0000441772"
FT   REGION          1..56
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        26..56
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   CROSSLNK        56
FT                   /note="Isoglutamyl lysine isopeptide (Glu-Lys) (interchain
FT                   with K-? in acceptor proteins)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   56 AA;  6594 MW;  323CA0429FBA02D0 CRC64;
     MPERIVKPMP QDPVTKPGDE GPRTPNVPKP DTERLLERMR RVDPRQAQRY RQRSGE