ID A0A1I2EC18_9BACT Unreviewed; 261 AA.
AC A0A1I2EC18;
DT 12-APR-2017, integrated into UniProtKB/TrEMBL.
DT 12-APR-2017, sequence version 1.
DT 24-JAN-2024, entry version 21.
DE RecName: Full=Protein-L-isoaspartate O-methyltransferase {ECO:0000256|HAMAP-Rule:MF_00090};
DE EC=2.1.1.77 {ECO:0000256|HAMAP-Rule:MF_00090};
DE AltName: Full=L-isoaspartyl protein carboxyl methyltransferase {ECO:0000256|HAMAP-Rule:MF_00090};
DE AltName: Full=Protein L-isoaspartyl methyltransferase {ECO:0000256|HAMAP-Rule:MF_00090};
DE AltName: Full=Protein-beta-aspartate methyltransferase {ECO:0000256|HAMAP-Rule:MF_00090};
DE Short=PIMT {ECO:0000256|HAMAP-Rule:MF_00090};
GN Name=pcm {ECO:0000256|HAMAP-Rule:MF_00090};
GN ORFNames=SAMN05444380_12218 {ECO:0000313|EMBL:SFE90269.1};
OS Thermophagus xiamenensis.
OC Bacteria; Bacteroidota; Bacteroidia; Marinilabiliales; Marinilabiliaceae;
OC Thermophagus.
OX NCBI_TaxID=385682 {ECO:0000313|EMBL:SFE90269.1, ECO:0000313|Proteomes:UP000181976};
RN [1] {ECO:0000313|EMBL:SFE90269.1, ECO:0000313|Proteomes:UP000181976}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 19012 {ECO:0000313|EMBL:SFE90269.1,
RC ECO:0000313|Proteomes:UP000181976};
RA de Groot N.N.;
RL Submitted (OCT-2016) to the EMBL/GenBank/DDBJ databases.
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:0000256|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:0000256|HAMAP-
CC Rule:MF_00090};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00090}.
CC -!- SIMILARITY: Belongs to the methyltransferase superfamily. L-
CC isoaspartyl/D-aspartyl protein methyltransferase family.
CC {ECO:0000256|ARBA:ARBA00005369, ECO:0000256|HAMAP-Rule:MF_00090}.
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DR EMBL; FONA01000022; SFE90269.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1I2EC18; -.
DR STRING; 385682.SAMN05444380_12218; -.
DR eggNOG; COG2518; Bacteria.
DR InParanoid; A0A1I2EC18; -.
DR OrthoDB; 9810066at2; -.
DR Proteomes; UP000181976; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0016020; C:membrane; IEA:UniProtKB-KW.
DR GO; GO:0004719; F:protein-L-isoaspartate (D-aspartate) O-methyltransferase activity; IEA:UniProtKB-UniRule.
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 {ECO:0000256|HAMAP-Rule:MF_00090};
KW Membrane {ECO:0000256|SAM:Phobius};
KW Methyltransferase {ECO:0000256|HAMAP-Rule:MF_00090,
KW ECO:0000313|EMBL:SFE90269.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000181976};
KW S-adenosyl-L-methionine {ECO:0000256|HAMAP-Rule:MF_00090};
KW Transferase {ECO:0000256|HAMAP-Rule:MF_00090, ECO:0000313|EMBL:SFE90269.1};
KW Transmembrane {ECO:0000256|SAM:Phobius};
KW Transmembrane helix {ECO:0000256|SAM:Phobius}.
FT TRANSMEM 21..41
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT ACT_SITE 111
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00090"
SQ SEQUENCE 261 AA; 29264 MW; 39E655F3A1D60BB3 CRC64;
MAIKADNRFH LISIKKHSKK YACTNMAGIF FLSFIAFTLY LPTVMSQTKA QQYREQREAM
VRSQIKARGI KSEAVLEAMR KVPRHLFVPY NMRDYAYADR PLHIGYNQTI SQPYIVAYMT
EALDVKPGDK ILEIGTGSGY QAAVLAEMGM KVYTIEIIPK LAEMAGENLR NNGYENVQVK
CGNGYNGWPE EAPFDAIIIT AAPESIPQTL IDQLKVGGTM VLPVGPVHSI QTLKKVVKKD
NGIKETTLLP VRFVPMIKSY N
//
