ID   PIMT_HELPY              Reviewed;         209 AA.
AC   P56133;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1997, sequence version 1.
DT   27-MAR-2024, entry version 125.
DE   RecName: Full=Protein-L-isoaspartate O-methyltransferase;
DE            EC=2.1.1.77;
DE   AltName: Full=L-isoaspartyl protein carboxyl methyltransferase;
DE   AltName: Full=Protein L-isoaspartyl methyltransferase;
DE   AltName: Full=Protein-beta-aspartate methyltransferase;
DE            Short=PIMT;
GN   Name=pcm; OrderedLocusNames=HP_0363;
OS   Helicobacter pylori (strain ATCC 700392 / 26695) (Campylobacter pylori).
OC   Bacteria; Campylobacterota; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=85962;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700392 / 26695;
RX   PubMed=9252185; DOI=10.1038/41483;
RA   Tomb J.-F., White O., Kerlavage A.R., Clayton R.A., Sutton G.G.,
RA   Fleischmann R.D., Ketchum K.A., Klenk H.-P., Gill S.R., Dougherty B.A.,
RA   Nelson K.E., Quackenbush J., Zhou L., Kirkness E.F., Peterson S.N.,
RA   Loftus B.J., Richardson D.L., Dodson R.J., Khalak H.G., Glodek A.,
RA   McKenney K., FitzGerald L.M., Lee N., Adams M.D., Hickey E.K., Berg D.E.,
RA   Gocayne J.D., Utterback T.R., Peterson J.D., Kelley J.M., Cotton M.D.,
RA   Weidman J.F., Fujii C., Bowman C., Watthey L., Wallin E., Hayes W.S.,
RA   Borodovsky M., Karp P.D., Smith H.O., Fraser C.M., Venter J.C.;
RT   "The complete genome sequence of the gastric pathogen Helicobacter
RT   pylori.";
RL   Nature 388:539-547(1997).
CC   -!- FUNCTION: Catalyzes the methyl esterification of L-isoaspartyl residues
CC       in peptides and proteins that result from spontaneous decomposition of
CC       normal L-aspartyl and L-asparaginyl residues. It plays a role in the
CC       repair and/or degradation of damaged proteins (By similarity).
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=[protein]-L-isoaspartate + S-adenosyl-L-methionine =
CC         [protein]-L-isoaspartate alpha-methyl ester + S-adenosyl-L-
CC         homocysteine; Xref=Rhea:RHEA:12705, Rhea:RHEA-COMP:12143, Rhea:RHEA-
CC         COMP:12144, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789, ChEBI:CHEBI:90596,
CC         ChEBI:CHEBI:90598; EC=2.1.1.77;
CC   -!- SUBUNIT: Monomer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the methyltransferase superfamily. L-
CC       isoaspartyl/D-aspartyl protein methyltransferase family. {ECO:0000305}.
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DR   EMBL; AE000511; AAD07431.1; -; Genomic_DNA.
DR   PIR; C64565; C64565.
DR   RefSeq; NP_207161.1; NC_000915.1.
DR   RefSeq; WP_001084597.1; NC_018939.1.
DR   AlphaFoldDB; P56133; -.
DR   SMR; P56133; -.
DR   IntAct; P56133; 1.
DR   STRING; 85962.HP_0363; -.
DR   PaxDb; 85962-C694_01840; -.
DR   EnsemblBacteria; AAD07431; AAD07431; HP_0363.
DR   KEGG; hpy:HP_0363; -.
DR   PATRIC; fig|85962.47.peg.386; -.
DR   eggNOG; COG2518; Bacteria.
DR   InParanoid; P56133; -.
DR   OrthoDB; 9810066at2; -.
DR   PhylomeDB; P56133; -.
DR   Proteomes; UP000000429; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0004719; F:protein-L-isoaspartate (D-aspartate) O-methyltransferase activity; IBA:GO_Central.
DR   GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR   GO; GO:0036211; P:protein modification process; IEA:UniProtKB-UniRule.
DR   GO; GO:0030091; P:protein repair; IEA:UniProtKB-UniRule.
DR   CDD; cd02440; AdoMet_MTases; 1.
DR   Gene3D; 3.40.50.150; Vaccinia Virus protein VP39; 1.
DR   HAMAP; MF_00090; PIMT; 1.
DR   InterPro; IPR000682; PCMT.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   NCBIfam; TIGR00080; pimt; 1.
DR   PANTHER; PTHR11579; PROTEIN-L-ISOASPARTATE O-METHYLTRANSFERASE; 1.
DR   PANTHER; PTHR11579:SF0; PROTEIN-L-ISOASPARTATE(D-ASPARTATE) O-METHYLTRANSFERASE; 1.
DR   Pfam; PF01135; PCMT; 1.
DR   SUPFAM; SSF53335; S-adenosyl-L-methionine-dependent methyltransferases; 1.
DR   PROSITE; PS01279; PCMT; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Methyltransferase; Reference proteome; S-adenosyl-L-methionine;
KW   Transferase.
FT   CHAIN           1..209
FT                   /note="Protein-L-isoaspartate O-methyltransferase"
FT                   /id="PRO_0000111892"
FT   ACT_SITE        59
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   209 AA;  23868 MW;  48F060C1C00B50D8 CRC64;
     MNSIKNHLMC EEINKRFNLH PKVREAMESI EREVFVPAPF KHFAYTLNAL SMQAQQYISS
     PLTVAKMTQY LEIDHVDSVL EIGCGSGYQA AVLSQIFRRV FSIERIESLY IEARLRLKTL
     GLDNVHVKFA DGNKGWEQYA PYDRILFSAC AKNIPQALID QLEEGGILVA PIQENNEQVI
     KRFVKQNNAL RVQKVLEKCL FVPVVDGVQ
//