ID   PRMC_BUCBP              Reviewed;         277 AA.
AC   Q89AT0;
DT   16-JUN-2003, integrated into UniProtKB/Swiss-Prot.
DT   16-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 106.
DE   RecName: Full=Release factor glutamine methyltransferase {ECO:0000255|HAMAP-Rule:MF_02126};
DE            Short=RF MTase {ECO:0000255|HAMAP-Rule:MF_02126};
DE            EC=2.1.1.297 {ECO:0000255|HAMAP-Rule:MF_02126};
DE   AltName: Full=N5-glutamine methyltransferase PrmC {ECO:0000255|HAMAP-Rule:MF_02126};
DE   AltName: Full=Protein-(glutamine-N5) MTase PrmC {ECO:0000255|HAMAP-Rule:MF_02126};
DE   AltName: Full=Protein-glutamine N-methyltransferase PrmC {ECO:0000255|HAMAP-Rule:MF_02126};
GN   Name=prmC {ECO:0000255|HAMAP-Rule:MF_02126}; Synonyms=hemK;
GN   OrderedLocusNames=bbp_162;
OS   Buchnera aphidicola subsp. Baizongia pistaciae (strain Bp).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=224915;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Bp;
RX   PubMed=12522265; DOI=10.1073/pnas.0235981100;
RA   van Ham R.C.H.J., Kamerbeek J., Palacios C., Rausell C., Abascal F.,
RA   Bastolla U., Fernandez J.M., Jimenez L., Postigo M., Silva F.J.,
RA   Tamames J., Viguera E., Latorre A., Valencia A., Moran F., Moya A.;
RT   "Reductive genome evolution in Buchnera aphidicola.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:581-586(2003).
CC   -!- FUNCTION: Methylates the class 1 translation termination release
CC       factors RF1/PrfA and RF2/PrfB on the glutamine residue of the
CC       universally conserved GGQ motif. {ECO:0000255|HAMAP-Rule:MF_02126}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=L-glutaminyl-[peptide chain release factor] + S-adenosyl-L-
CC         methionine = H(+) + N(5)-methyl-L-glutaminyl-[peptide chain release
CC         factor] + S-adenosyl-L-homocysteine; Xref=Rhea:RHEA:42896, Rhea:RHEA-
CC         COMP:10271, Rhea:RHEA-COMP:10272, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:30011, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC         ChEBI:CHEBI:61891; EC=2.1.1.297; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_02126};
CC   -!- SIMILARITY: Belongs to the protein N5-glutamine methyltransferase
CC       family. PrmC subfamily. {ECO:0000255|HAMAP-Rule:MF_02126}.
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DR   EMBL; AE016826; AAO26895.1; -; Genomic_DNA.
DR   RefSeq; WP_011091296.1; NC_004545.1.
DR   AlphaFoldDB; Q89AT0; -.
DR   SMR; Q89AT0; -.
DR   STRING; 224915.bbp_162; -.
DR   EnsemblBacteria; AAO26895; AAO26895; bbp_162.
DR   GeneID; 56470705; -.
DR   KEGG; bab:bbp_162; -.
DR   eggNOG; COG2890; Bacteria.
DR   HOGENOM; CLU_018398_3_0_6; -.
DR   OMA; FDARYWE; -.
DR   OrthoDB; 1816476at2; -.
DR   Proteomes; UP000000601; Chromosome.
DR   GO; GO:0003676; F:nucleic acid binding; IEA:InterPro.
DR   GO; GO:0102559; F:protein-(glutamine-N5) methyltransferase activity; IEA:UniProtKB-EC.
DR   GO; GO:0036009; F:protein-glutamine N-methyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0018364; P:peptidyl-glutamine methylation; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.150; -; 1.
DR   HAMAP; MF_02126; RF_methyltr_PrmC; 1.
DR   InterPro; IPR002052; DNA_methylase_N6_adenine_CS.
DR   InterPro; IPR004556; HemK-like.
DR   InterPro; IPR025714; Methyltranfer_dom.
DR   InterPro; IPR040758; PrmC_N.
DR   InterPro; IPR019874; Release_fac_Glu-N5_MeTfrase.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   Pfam; PF13847; Methyltransf_31; 1.
DR   Pfam; PF17827; PrmC_N; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   TIGRFAMs; TIGR00536; hemK_fam; 1.
DR   TIGRFAMs; TIGR03534; RF_mod_PrmC; 1.
PE   3: Inferred from homology;
KW   Methyltransferase; Reference proteome; S-adenosyl-L-methionine;
KW   Transferase.
FT   CHAIN           1..277
FT                   /note="Release factor glutamine methyltransferase"
FT                   /id="PRO_0000157163"
FT   BINDING         119..123
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02126"
FT   BINDING         142
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02126"
FT   BINDING         170
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02126"
FT   BINDING         184..187
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02126"
FT   BINDING         184
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02126"
SQ   SEQUENCE   277 AA;  31965 MW;  80EC64C953975B3F CRC64;
     MKIKNWLKYA SLKLKKTSSS PNLDAEILLS YVLKKCRTWI ISNDFIKLTY DNLIDLNVLL
     QRRMNSEPIS YLIHVKEFWS LPFLVSNSTL IPRPDTEILV EKALIYLKNL SNAKVLDLGT
     GCGSIALALA SERLDCKIIG IDCVKESISI ASKNAKILKL KNVSFLHSIW FSKVDNMFDM
     IVSNPPYLSF SEMKNVDKEV LFEPFIALFS SENGLGAIRH IIKYSKKYLY SKAWLLVEHG
     WKQKDKVQSF FYKYSFININ TYRDYCDSDR VTVGQKQ