ID   PIMT_STAMF              Reviewed;         225 AA.
AC   A3DMG3;
DT   14-OCT-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-MAR-2007, sequence version 1.
DT   03-AUG-2022, entry version 79.
DE   RecName: Full=Protein-L-isoaspartate O-methyltransferase {ECO:0000255|HAMAP-Rule:MF_00090};
DE            EC=2.1.1.77 {ECO:0000255|HAMAP-Rule:MF_00090};
DE   AltName: Full=L-isoaspartyl protein carboxyl methyltransferase {ECO:0000255|HAMAP-Rule:MF_00090};
DE   AltName: Full=Protein L-isoaspartyl methyltransferase {ECO:0000255|HAMAP-Rule:MF_00090};
DE   AltName: Full=Protein-beta-aspartate methyltransferase {ECO:0000255|HAMAP-Rule:MF_00090};
DE            Short=PIMT {ECO:0000255|HAMAP-Rule:MF_00090};
GN   Name=pcm {ECO:0000255|HAMAP-Rule:MF_00090}; OrderedLocusNames=Smar_0720;
OS   Staphylothermus marinus (strain ATCC 43588 / DSM 3639 / JCM 9404 / F1).
OC   Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales;
OC   Desulfurococcaceae; Staphylothermus.
OX   NCBI_TaxID=399550;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 43588 / DSM 3639 / JCM 9404 / F1;
RX   PubMed=19341479; DOI=10.1186/1471-2164-10-145;
RA   Anderson I.J., Dharmarajan L., Rodriguez J., Hooper S., Porat I.,
RA   Ulrich L.E., Elkins J.G., Mavromatis K., Sun H., Land M., Lapidus A.,
RA   Lucas S., Barry K., Huber H., Zhulin I.B., Whitman W.B., Mukhopadhyay B.,
RA   Woese C., Bristow J., Kyrpides N.;
RT   "The complete genome sequence of Staphylothermus marinus reveals
RT   differences in sulfur metabolism among heterotrophic Crenarchaeota.";
RL   BMC Genomics 10:145-145(2009).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 43588 / DSM 3639 / JCM 9404 / F1;
RX   PubMed=21304655; DOI=10.4056/sigs.30527;
RA   Anderson I.J., Sun H., Lapidus A., Copeland A., Glavina Del Rio T.,
RA   Tice H., Dalin E., Lucas S., Barry K., Land M., Richardson P., Huber H.,
RA   Kyrpides N.C.;
RT   "Complete genome sequence of Staphylothermus marinus Stetter and Fiala 1986
RT   type strain F1.";
RL   Stand. Genomic Sci. 1:183-188(2009).
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. {ECO:0000255|HAMAP-
CC       Rule:MF_00090}.
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; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00090};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00090}.
CC   -!- SIMILARITY: Belongs to the methyltransferase superfamily. L-
CC       isoaspartyl/D-aspartyl protein methyltransferase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00090}.
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DR   EMBL; CP000575; ABN69823.1; -; Genomic_DNA.
DR   RefSeq; WP_011839014.1; NC_009033.1.
DR   AlphaFoldDB; A3DMG3; -.
DR   SMR; A3DMG3; -.
DR   STRING; 399550.Smar_0720; -.
DR   EnsemblBacteria; ABN69823; ABN69823; Smar_0720.
DR   GeneID; 4908069; -.
DR   KEGG; smr:Smar_0720; -.
DR   eggNOG; arCOG00976; Archaea.
DR   HOGENOM; CLU_055432_2_0_2; -.
DR   OMA; TISAIHM; -.
DR   OrthoDB; 88476at2157; -.
DR   Proteomes; UP000000254; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004719; F:protein-L-isoaspartate (D-aspartate) O-methyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0030091; P:protein repair; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.150; -; 1.
DR   HAMAP; MF_00090; PIMT; 1.
DR   InterPro; IPR000682; PCMT.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   PANTHER; PTHR11579; PTHR11579; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   TIGRFAMs; TIGR00080; pimt; 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..225
FT                   /note="Protein-L-isoaspartate O-methyltransferase"
FT                   /id="PRO_0000351973"
FT   ACT_SITE        63
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00090"
SQ   SEQUENCE   225 AA;  25568 MW;  766BFA45C1F97D18 CRC64;
     MRSRFENERR RVIDYLRRIG IIRSDKVYRA LLSVPREEFV PPQYREYAYI DEPLPIGFGQ
     TISAIHMVAI MTEELDPEPG NIVLEIGTGS GYQAAVLAEI VAKQDPNRRG HVYTVERIPE
     LAEFAKKNLE RTGYIEYVTV IVGDGTKGYP EKAPYDRIIV TAAAPEVPKP LLKQLRVGGK
     LVIPVGDRFV QRLLSVKRVG EHEYVTKHGI ECMFVPLIGE YGWKD