ID   PUP_ROTMD               Reviewed;          64 AA.
AC   D2NT92;
DT   10-AUG-2010, integrated into UniProtKB/Swiss-Prot.
DT   02-MAR-2010, sequence version 1.
DT   25-MAY-2022, entry version 36.
DE   RecName: Full=Prokaryotic ubiquitin-like protein Pup {ECO:0000255|HAMAP-Rule:MF_02106};
DE   AltName: Full=Bacterial ubiquitin-like modifier {ECO:0000255|HAMAP-Rule:MF_02106};
GN   Name=pup {ECO:0000255|HAMAP-Rule:MF_02106}; OrderedLocusNames=RMDY18_10360;
OS   Rothia mucilaginosa (strain DY-18) (Stomatococcus mucilaginosus).
OC   Bacteria; Actinobacteria; Micrococcales; Micrococcaceae; Rothia.
OX   NCBI_TaxID=680646;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DY-18;
RA   Yamane K., Nambu T., Mashimo C., Sugimori C., Yamanaka T., Leung K.,
RA   Fukushima H.;
RT   "Complete genome sequence of Rothia mucilaginosa DJ.";
RL   Submitted (JUL-2009) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Protein modifier that is covalently attached to lysine
CC       residues of substrate proteins, thereby targeting them for proteasomal
CC       degradation. The tagging system is termed pupylation.
CC       {ECO:0000255|HAMAP-Rule:MF_02106}.
CC   -!- PATHWAY: Protein degradation; proteasomal Pup-dependent pathway.
CC       {ECO:0000255|HAMAP-Rule:MF_02106}.
CC   -!- SUBUNIT: Strongly interacts with the proteasome-associated ATPase ARC
CC       through a hydrophobic interface; the interacting region of Pup lies in
CC       its C-terminal half. There is one Pup binding site per ARC hexamer
CC       ring. {ECO:0000255|HAMAP-Rule:MF_02106}.
CC   -!- DOMAIN: The N-terminal unstructured half of Pup provides a signal
CC       required to initiate unfolding and degradation by the proteasome but is
CC       not needed for pupylation, while the C-terminal helical half of Pup
CC       interacts with ARC to target proteins to the proteasome.
CC       {ECO:0000255|HAMAP-Rule:MF_02106}.
CC   -!- SIMILARITY: Belongs to the prokaryotic ubiquitin-like protein family.
CC       {ECO:0000255|HAMAP-Rule:MF_02106}.
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DR   EMBL; AP011540; BAI64868.1; -; Genomic_DNA.
DR   RefSeq; WP_005506016.1; NC_013715.1.
DR   AlphaFoldDB; D2NT92; -.
DR   SMR; D2NT92; -.
DR   STRING; 680646.RMDY18_10360; -.
DR   EnsemblBacteria; BAI64868; BAI64868; RMDY18_10360.
DR   GeneID; 61436634; -.
DR   KEGG; rmu:RMDY18_10360; -.
DR   HOGENOM; CLU_183816_1_0_11; -.
DR   OMA; RIHASKP; -.
DR   UniPathway; UPA00997; -.
DR   Proteomes; UP000001883; Chromosome.
DR   GO; GO:0070628; F:proteasome binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0031386; F:protein tag; IEA:UniProtKB-UniRule.
DR   GO; GO:0019941; P:modification-dependent protein catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0010498; P:proteasomal protein catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0070490; P:protein pupylation; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_02106; Pup; 1.
DR   InterPro; IPR008515; Ubiquitin-like_Pup.
DR   Pfam; PF05639; Pup; 1.
DR   TIGRFAMs; TIGR03687; pupylate_cterm; 1.
PE   3: Inferred from homology;
KW   Isopeptide bond; Reference proteome; Ubl conjugation pathway.
FT   CHAIN           1..64
FT                   /note="Prokaryotic ubiquitin-like protein Pup"
FT                   /id="PRO_0000396000"
FT   REGION          20..58
FT                   /note="ARC ATPase binding"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02106"
FT   CROSSLNK        64
FT                   /note="Isoglutamyl lysine isopeptide (Glu-Lys) (interchain
FT                   with K-? in acceptor proteins)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02106"
SQ   SEQUENCE   64 AA;  6924 MW;  3D9D316DC1D5D471 CRC64;
     MSRERISAQQ TETTAAEQEQ ELTLAASHVV SDVSEVDDLL DEIDGLLAEN AEDFVTGFVQ
     KGGE