ID   GLYA_PHYMT              Reviewed;         419 AA.
AC   B3R0G5;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   02-SEP-2008, sequence version 1.
DT   03-AUG-2022, entry version 67.
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=ATP_00142;
OS   Phytoplasma mali (strain AT).
OC   Bacteria; Tenericutes; Mollicutes; Acholeplasmatales; Acholeplasmataceae;
OC   Candidatus Phytoplasma; 16SrX (Apple proliferation group).
OX   NCBI_TaxID=482235;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AT;
RX   PubMed=18582369; DOI=10.1186/1471-2164-9-306;
RA   Kube M., Schneider B., Kuhl H., Dandekar T., Heitmann K., Migdoll A.M.,
RA   Reinhardt R., Seemueller E.;
RT   "The linear chromosome of the plant-pathogenic mycoplasma 'Candidatus
RT   Phytoplasma mali'.";
RL   BMC Genomics 9:306-306(2008).
CC   -!- FUNCTION: Catalyzes the reversible interconversion of serine and
CC       glycine with tetrahydrofolate (THF) serving as the one-carbon carrier.
CC       This reaction serves as the major source of one-carbon groups required
CC       for the biosynthesis of purines, thymidylate, methionine, and other
CC       important biomolecules. Also exhibits THF-independent aldolase activity
CC       toward beta-hydroxyamino acids, producing glycine and aldehydes, via a
CC       retro-aldol 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; CU469464; CAP18329.1; -; Genomic_DNA.
DR   AlphaFoldDB; B3R0G5; -.
DR   SMR; B3R0G5; -.
DR   STRING; 37692.ATP_00142; -.
DR   EnsemblBacteria; CAP18329; CAP18329; ATP_00142.
DR   KEGG; pml:ATP_00142; -.
DR   eggNOG; COG0112; Bacteria.
DR   HOGENOM; CLU_022477_2_1_14; -.
DR   OMA; SHPAGLI; -.
DR   UniPathway; UPA00193; -.
DR   UniPathway; UPA00288; UER01023.
DR   Proteomes; UP000002020; 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:UniProtKB-UniPathway.
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..419
FT                   /note="Serine hydroxymethyltransferase"
FT                   /id="PRO_0000369948"
FT   BINDING         121
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   BINDING         125..127
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   SITE            230
FT                   /note="Plays an important role in substrate specificity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   MOD_RES         231
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
SQ   SEQUENCE   419 AA;  47119 MW;  94F8400C7373CF67 CRC64;
     MNQEINNFYI KDQEIFDQIK LEEKRQKESI NLIASENFVS QDVLKVQGTI LTNKYAEGYP
     EKRFYNGCQY IDEIEKIAIE RATELFKAKY ANVQPHSGSQ ANMAVFQALL NPNDRILGLS
     LSDGGHLTHG SKMNFSGKYY ESYFYGLNSK TETIDYAEVE KIAFAIRPKL IITGYSSYSK
     IIDFKSFRKI ANKVNAYLMA DIAHISGLVA SGLHPCPLEA QADVVTSTTH KTLRGPRGGL
     ILTNNKEIIN KINKAVFPGG QGGPLMHIIA AKAVAFKEAL HSDFIKYQKQ ILKNACFFAE
     NLQKKGYRII SKSTENHLFL VDVKSKNPNF TGKKISDILN KVNIVVNKNV IPFDKETPLI
     TSGIRLGTPA MTTRGFKENE FAKVSDFIDE AITNHNDLNY LNNLKQKVIT LSKNFPLKI