PAFA_BIFLO
ID PAFA_BIFLO Reviewed; 486 AA.
AC Q8G3G3;
DT 10-AUG-2010, integrated into UniProtKB/Swiss-Prot.
DT 01-MAR-2003, sequence version 1.
DT 03-AUG-2022, entry version 87.
DE RecName: Full=Pup--protein ligase {ECO:0000255|HAMAP-Rule:MF_02111};
DE EC=6.3.1.19 {ECO:0000255|HAMAP-Rule:MF_02111};
DE AltName: Full=Proteasome accessory factor A {ECO:0000255|HAMAP-Rule:MF_02111};
DE AltName: Full=Pup-conjugating enzyme {ECO:0000255|HAMAP-Rule:MF_02111};
GN Name=pafA {ECO:0000255|HAMAP-Rule:MF_02111}; OrderedLocusNames=BL1797;
OS Bifidobacterium longum (strain NCC 2705).
OC Bacteria; Actinobacteria; Bifidobacteriales; Bifidobacteriaceae;
OC Bifidobacterium.
OX NCBI_TaxID=206672;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NCC 2705;
RX PubMed=12381787; DOI=10.1073/pnas.212527599;
RA Schell M.A., Karmirantzou M., Snel B., Vilanova D., Berger B., Pessi G.,
RA Zwahlen M.-C., Desiere F., Bork P., Delley M., Pridmore R.D., Arigoni F.;
RT "The genome sequence of Bifidobacterium longum reflects its adaptation to
RT the human gastrointestinal tract.";
RL Proc. Natl. Acad. Sci. U.S.A. 99:14422-14427(2002).
CC -!- FUNCTION: Catalyzes the covalent attachment of the prokaryotic
CC ubiquitin-like protein modifier Pup to the proteasomal substrate
CC proteins, thereby targeting them for proteasomal degradation. This
CC tagging system is termed pupylation. The ligation reaction involves the
CC side-chain carboxylate of the C-terminal glutamate of Pup and the side-
CC chain amino group of a substrate lysine. {ECO:0000255|HAMAP-
CC Rule:MF_02111}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + [prokaryotic ubiquitin-like protein]-L-glutamate +
CC [protein]-L-lysine = ADP + phosphate + N(6)-([prokaryotic ubiquitin-
CC like protein]-gamma-L-glutamyl)-[protein]-L-lysine.; EC=6.3.1.19;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_02111};
CC -!- PATHWAY: Protein degradation; proteasomal Pup-dependent pathway.
CC {ECO:0000255|HAMAP-Rule:MF_02111}.
CC -!- PATHWAY: Protein modification; protein pupylation. {ECO:0000255|HAMAP-
CC Rule:MF_02111}.
CC -!- MISCELLANEOUS: The reaction mechanism probably proceeds via the
CC activation of Pup by phosphorylation of its C-terminal glutamate, which
CC is then subject to nucleophilic attack by the substrate lysine,
CC resulting in an isopeptide bond and the release of phosphate as a good
CC leaving group. {ECO:0000255|HAMAP-Rule:MF_02111}.
CC -!- SIMILARITY: Belongs to the Pup ligase/Pup deamidase family. Pup-
CC conjugating enzyme subfamily. {ECO:0000255|HAMAP-Rule:MF_02111}.
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DR EMBL; AE014295; AAN25580.1; -; Genomic_DNA.
DR RefSeq; NP_696944.1; NC_004307.2.
DR RefSeq; WP_011068846.1; NC_004307.2.
DR AlphaFoldDB; Q8G3G3; -.
DR SMR; Q8G3G3; -.
DR STRING; 206672.BL1797; -.
DR EnsemblBacteria; AAN25580; AAN25580; BL1797.
DR KEGG; blo:BL1797; -.
DR PATRIC; fig|206672.9.peg.1851; -.
DR HOGENOM; CLU_040524_0_1_11; -.
DR OMA; CVSQRAE; -.
DR PhylomeDB; Q8G3G3; -.
DR UniPathway; UPA00997; -.
DR UniPathway; UPA00998; -.
DR Proteomes; UP000000439; Chromosome.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016879; F:ligase activity, forming carbon-nitrogen bonds; IEA:InterPro.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0019787; F:ubiquitin-like protein transferase activity; 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_02111; Pup_ligase; 1.
DR InterPro; IPR022279; Pup_ligase.
DR InterPro; IPR004347; Pup_ligase/deamidase.
DR PANTHER; PTHR42307; PTHR42307; 1.
DR Pfam; PF03136; Pup_ligase; 1.
DR PIRSF; PIRSF018077; UCP018077; 1.
DR TIGRFAMs; TIGR03686; pupylate_PafA; 1.
PE 3: Inferred from homology;
KW ATP-binding; Ligase; Magnesium; Metal-binding; Nucleotide-binding;
KW Reference proteome; Ubl conjugation pathway.
FT CHAIN 1..486
FT /note="Pup--protein ligase"
FT /id="PRO_0000395900"
FT ACT_SITE 80
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02111"
FT BINDING 33
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02111"
FT BINDING 76
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02111"
FT BINDING 78
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02111"
FT BINDING 86
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02111"
FT BINDING 89
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02111"
FT BINDING 451
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02111"
SQ SEQUENCE 486 AA; 54066 MW; B81E43BAEC83BF21 CRC64;
MPQLRDSGTR SLHATEPVPS AEMDGFCRIF GVETEYGVAV TGAERPVDAG QVAMTMFQPI
VSRSRSTNTY LANGSRLYLD VGSHPEYATA EARDPREALA QDLAGEHVMR NLALKAQRKL
RESYGAHATI HVFKNNVDSA GHAFGCHENY LVRRFVPLET IEHQLLPFLI TRQLYTGAGR
MTPDGFQITQ RADFLDEAVS SATTRSRPMV NTRDEPHADP DSFRRLHVII GDSNRSQWST
WMKLAVTHLV LCAIEDAFRH GVPSGFEQYA FADPAAANRT VSRFLDNPRA ELTLESGESV
SALGLQRRYY AAVKAFIETH GDALAGSLPA TTIDTIMGEW SRVLDALERG AYDALADRVD
WAAKKCLFDA LKRRRPDVTF AQMEQLELDY HDIANGRLYG SLVARNQMRE LLTGDNVEYA
VHNPPTDTRA ALRGRFVDAA LNVGAQFSAD WTHLTLTAPE RREAILLDPF EAEPTLGFEQ
LMEALN
