ID   GLYA_BIFAA              Reviewed;         433 AA.
AC   A1A1V0;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 1.
DT   03-AUG-2022, entry version 101.
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=BAD_0902;
OS   Bifidobacterium adolescentis (strain ATCC 15703 / DSM 20083 / NCTC 11814 /
OS   E194a).
OC   Bacteria; Actinobacteria; Bifidobacteriales; Bifidobacteriaceae;
OC   Bifidobacterium.
OX   NCBI_TaxID=367928;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 15703 / DSM 20083 / NCTC 11814 / E194a;
RA   Suzuki T., Tsuda Y., Kanou N., Inoue T., Kumazaki K., Nagano S., Hirai S.,
RA   Tanaka K., Watanabe K.;
RT   "Bifidobacterium adolescentis complete genome sequence.";
RL   Submitted (DEC-2006) to the EMBL/GenBank/DDBJ databases.
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; AP009256; BAF39683.1; -; Genomic_DNA.
DR   RefSeq; WP_011743261.1; NC_008618.1.
DR   AlphaFoldDB; A1A1V0; -.
DR   SMR; A1A1V0; -.
DR   STRING; 1680.BADO_0950; -.
DR   EnsemblBacteria; BAF39683; BAF39683; BAD_0902.
DR   KEGG; bad:BAD_0902; -.
DR   HOGENOM; CLU_022477_2_1_11; -.
DR   OMA; SHPAGLI; -.
DR   UniPathway; UPA00193; -.
DR   UniPathway; UPA00288; UER01023.
DR   Proteomes; UP000008702; 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; IPR039429; SHMT-like_dom.
DR   PANTHER; PTHR11680; PTHR11680; 1.
DR   Pfam; PF00464; SHMT; 1.
DR   PIRSF; PIRSF000412; SHMT; 1.
DR   SUPFAM; SSF53383; SSF53383; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; One-carbon metabolism;
KW   Pyridoxal phosphate; Reference proteome; Transferase.
FT   CHAIN           1..433
FT                   /note="Serine hydroxymethyltransferase"
FT                   /id="PRO_0000369899"
FT   BINDING         131
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   BINDING         135..137
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   SITE            239
FT                   /note="Plays an important role in substrate specificity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   MOD_RES         240
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
SQ   SEQUENCE   433 AA;  46577 MW;  7E43355F01EC7124 CRC64;
     MTASPLAQTP NDMFNAPIAE ADPEIAEILD AELSRQQNGL EMIASENFVP RAVLQAQGSV
     LTNKYAEGYP GRRYYGGCEQ VDKIETIARE RAKSLFGAEY ANVQPHSGAQ ANAAVYQALV
     KPGDTVLGLA LDHGGHLTHG MKINFSGRFY HAEAYGVNPE TFRIDPEIIR QRALETHPAM
     IIGGWSAYPR IEDFKAMKEI ADEVGAKFWV DMAHFAGLVA AGLHPSPVPY ADVVSSTAHK
     TLGGPRSGFI LAKQEYAKKL NSAVFPGQQG GPLMHVIAGK AVAFKVAATP EFKDRMQRTL
     DGAKILAERL MADDVKNNGI SVLTGGTDVH LVMVDLRNSE MDGKQGEDLL AQCGITINRN
     TVPFDPRPAS VASGLRIGTS ALATRGFGPK EYEEVADIIG TALAAGQDVD ALKARVDKLA
     EDFPLYPGLD QIH