ID   GLYA_METAR              Reviewed;         423 AA.
AC   Q0W3U6;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   05-SEP-2006, sequence version 1.
DT   03-AUG-2022, entry version 96.
DE   RecName: Full=Serine hydroxymethyltransferase {ECO:0000255|HAMAP-Rule:MF_00051};
DE            Short=SHMT {ECO:0000255|HAMAP-Rule:MF_00051};
DE            Short=Serine methylase {ECO:0000255|HAMAP-Rule:MF_00051};
DE            EC=2.1.2.1 {ECO:0000255|HAMAP-Rule:MF_00051};
GN   Name=glyA {ECO:0000255|HAMAP-Rule:MF_00051}; OrderedLocusNames=UNCMA_12910;
GN   ORFNames=RCIX1736;
OS   Methanocella arvoryzae (strain DSM 22066 / NBRC 105507 / MRE50).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC   Methanocellales; Methanocellaceae; Methanocella.
OX   NCBI_TaxID=351160;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 22066 / NBRC 105507 / MRE50;
RX   PubMed=16857943; DOI=10.1126/science.1127062;
RA   Erkel C., Kube M., Reinhardt R., Liesack W.;
RT   "Genome of rice cluster I archaea -- the key methane producers in the rice
RT   rhizosphere.";
RL   Science 313:370-372(2006).
CC   -!- FUNCTION: Catalyzes the reversible interconversion of serine and
CC       glycine with tetrahydrofolate (THF) serving as the one-carbon carrier.
CC       Also exhibits THF-independent aldolase activity toward beta-
CC       hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol
CC       mechanism. {ECO:0000255|HAMAP-Rule:MF_00051}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + H2O =
CC         (6S)-5,6,7,8-tetrahydrofolate + L-serine; Xref=Rhea:RHEA:15481,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15636, ChEBI:CHEBI:33384,
CC         ChEBI:CHEBI:57305, ChEBI:CHEBI:57453; EC=2.1.2.1;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00051};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00051};
CC   -!- PATHWAY: One-carbon metabolism; tetrahydrofolate interconversion.
CC       {ECO:0000255|HAMAP-Rule:MF_00051}.
CC   -!- PATHWAY: Amino-acid biosynthesis; glycine biosynthesis; glycine from L-
CC       serine: step 1/1. {ECO:0000255|HAMAP-Rule:MF_00051}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00051}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00051}.
CC   -!- SIMILARITY: Belongs to the SHMT family. {ECO:0000255|HAMAP-
CC       Rule:MF_00051}.
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DR   EMBL; AM114193; CAJ36947.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q0W3U6; -.
DR   SMR; Q0W3U6; -.
DR   STRING; 351160.RCIX1736; -.
DR   PRIDE; Q0W3U6; -.
DR   EnsemblBacteria; CAJ36947; CAJ36947; RCIX1736.
DR   KEGG; rci:RCIX1736; -.
DR   PATRIC; fig|351160.9.peg.1327; -.
DR   eggNOG; arCOG00070; Archaea.
DR   OMA; SHPAGLI; -.
DR   UniPathway; UPA00193; -.
DR   UniPathway; UPA00288; UER01023.
DR   Proteomes; UP000000663; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004372; F:glycine hydroxymethyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0030170; F:pyridoxal phosphate binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0019264; P:glycine biosynthetic process from serine; IEA:UniProtKB-UniRule.
DR   GO; GO:0035999; P:tetrahydrofolate interconversion; IEA:InterPro.
DR   CDD; cd00378; SHMT; 1.
DR   Gene3D; 3.40.640.10; -; 1.
DR   Gene3D; 3.90.1150.10; -; 1.
DR   HAMAP; MF_00051; SHMT; 1.
DR   InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR   InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR   InterPro; IPR015422; PyrdxlP-dep_Trfase_small.
DR   InterPro; IPR001085; Ser_HO-MeTrfase.
DR   InterPro; IPR019798; Ser_HO-MeTrfase_PLP_BS.
DR   InterPro; IPR039429; SHMT-like_dom.
DR   PANTHER; PTHR11680; PTHR11680; 1.
DR   Pfam; PF00464; SHMT; 1.
DR   PIRSF; PIRSF000412; SHMT; 1.
DR   SUPFAM; SSF53383; SSF53383; 1.
DR   PROSITE; PS00096; SHMT; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; One-carbon metabolism;
KW   Pyridoxal phosphate; Reference proteome; Transferase.
FT   CHAIN           1..423
FT                   /note="Serine hydroxymethyltransferase"
FT                   /id="PRO_0000369979"
FT   BINDING         119..121
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   SITE            224
FT                   /note="Plays an important role in substrate specificity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   MOD_RES         225
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
SQ   SEQUENCE   423 AA;  46145 MW;  5704E174BCC9CDDF CRC64;
     MLNPDVKTIV DAVEGSQDLF RHSLPMIASE NVTSPMVRKV LSSDLGHRYA EGQVGHRFYQ
     GCGFVDVIEG KAIELAKEIF RAPHVNVQPV SGVNCNIAAF FALADPGDKL MALAVPSGGH
     ISHAKFSAAG IRGLKIYTHP YDNQIMNIDV DRMIKQIREI RPRVVMFGAS LFLFPHPVKE
     AREVCDEVGA SIVYDGAHVL GLIAGGQFQD PLREGADVVT GSTHKTFPGP QGGIILCKEK
     FAKDIDEAVF PGTVSNAHLH HKAGLAITLA EMKAFGKQYA AQIVKNSQAL GAAMDDLGFN
     VLCKDLGYTK SHQIAVDVSK IGGGSVLASK LERANIITNK NLFPWDDVNT TDNPSGLRLG
     TQELTRLGMN EPEMKEVAKF IKRVAIDKEE PEKVKKDVVH FKSQYQAVKY CFDGDGAYEF
     SLR