ID   A0A9J6QS93_9FIRM        Unreviewed;       416 AA.
AC   A0A9J6QS93;
DT   28-JUN-2023, integrated into UniProtKB/TrEMBL.
DT   28-JUN-2023, sequence version 1.
DT   27-MAR-2024, entry version 5.
DE   RecName: Full=Serine hydroxymethyltransferase {ECO:0000256|HAMAP-Rule:MF_00051};
DE            Short=SHMT {ECO:0000256|HAMAP-Rule:MF_00051};
DE            Short=Serine methylase {ECO:0000256|HAMAP-Rule:MF_00051};
DE            EC=2.1.2.1 {ECO:0000256|HAMAP-Rule:MF_00051};
GN   Name=glyA {ECO:0000256|HAMAP-Rule:MF_00051};
GN   ORFNames=OBO34_03710 {ECO:0000313|EMBL:MCU7377459.1};
OS   Hominibacterium faecale.
OC   Bacteria; Bacillota; Clostridia; Eubacteriales;
OC   Eubacteriales Family XIII. Incertae Sedis; Hominibacterium.
OX   NCBI_TaxID=2839743 {ECO:0000313|EMBL:MCU7377459.1, ECO:0000313|Proteomes:UP001065549};
RN   [1] {ECO:0000313|EMBL:MCU7377459.1}
RP   NUCLEOTIDE SEQUENCE.
RC   STRAIN=ASD5510 {ECO:0000313|EMBL:MCU7377459.1};
RA   Efimov B.A., Chaplin A.V., Sokolova S.R., Pikina A.P., Korzhanova M.,
RA   Belova V., Korostin D.;
RT   "Culturomic study of gut microbiota in children with autism spectrum
RT   disorder.";
RL   Submitted (SEP-2022) 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:0000256|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:0000256|HAMAP-Rule:MF_00051};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000256|ARBA:ARBA00001933,
CC         ECO:0000256|HAMAP-Rule:MF_00051, ECO:0000256|PIRSR:PIRSR000412-50};
CC   -!- PATHWAY: Amino-acid biosynthesis; glycine biosynthesis; glycine from L-
CC       serine: step 1/1. {ECO:0000256|HAMAP-Rule:MF_00051}.
CC   -!- PATHWAY: One-carbon metabolism; tetrahydrofolate interconversion.
CC       {ECO:0000256|HAMAP-Rule:MF_00051}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000256|ARBA:ARBA00011738, ECO:0000256|HAMAP-
CC       Rule:MF_00051}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00051}.
CC   -!- SIMILARITY: Belongs to the SHMT family. {ECO:0000256|ARBA:ARBA00006376,
CC       ECO:0000256|HAMAP-Rule:MF_00051}.
CC   -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC       whole genome shotgun (WGS) entry which is preliminary data.
CC       {ECO:0000313|EMBL:MCU7377459.1}.
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DR   EMBL; JAOSHN010000001; MCU7377459.1; -; Genomic_DNA.
DR   Proteomes; UP001065549; Unassembled WGS sequence.
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; 3.90.1150.10; Aspartate Aminotransferase, domain 1; 1.
DR   Gene3D; 3.40.640.10; Type I PLP-dependent aspartate aminotransferase-like (Major domain); 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; SERINE HYDROXYMETHYLTRANSFERASE; 1.
DR   PANTHER; PTHR11680:SF28; SERINE HYDROXYMETHYLTRANSFERASE; 1.
DR   Pfam; PF00464; SHMT; 1.
DR   PIRSF; PIRSF000412; SHMT; 1.
DR   SUPFAM; SSF53383; PLP-dependent transferases; 1.
DR   PROSITE; PS00096; SHMT; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis {ECO:0000256|HAMAP-Rule:MF_00051};
KW   Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00051};
KW   One-carbon metabolism {ECO:0000256|ARBA:ARBA00022563, ECO:0000256|HAMAP-
KW   Rule:MF_00051};
KW   Pyridoxal phosphate {ECO:0000256|ARBA:ARBA00022898, ECO:0000256|HAMAP-
KW   Rule:MF_00051}; Reference proteome {ECO:0000313|Proteomes:UP001065549};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW   Rule:MF_00051}.
FT   DOMAIN          6..380
FT                   /note="Serine hydroxymethyltransferase-like"
FT                   /evidence="ECO:0000259|Pfam:PF00464"
FT   BINDING         119
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051"
FT   BINDING         123..125
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051"
FT   BINDING         242
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051"
FT   BINDING         351..353
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051"
FT   SITE            227
FT                   /note="Plays an important role in substrate specificity"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051"
FT   MOD_RES         228
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051,
FT                   ECO:0000256|PIRSR:PIRSR000412-50"
SQ   SEQUENCE   416 AA;  45125 MW;  4F33F3461E01A53C CRC64;
     MYFNYLDKAD PEISAAIKRE IGRQETKIEM IASENFVNYE IMEAAGSALT NKYAEGYPGK
     RYYGGCEFVD EVEAMAIERA KALFGADHAN VQPHCGANAN TAVYQAVLEY GDTVLGMDLS
     NGGHLSHGSP VNISGKSYNF VPYGLNPETE KIDFDNVREL ALKHKPKLIV AGASAYPRTI
     ETDKFKAIAD EVGAILMVDM AHIAGLVATG HHPNPMEYAD IVTSTTHKTL RGPRGGLILC
     KEKYAKAIDK AIFPGTQGGP LMHIIAAKAV CFKEAAEPEF KIYQQQVIDN AQALAKALIA
     KGFDLVSGGT DNHLVLVNLV GKNLTGKRAE NLLDEANITT NKNAVPNDPQ SPFVTSGLRL
     GTPAMTSRGF KEEDVEKTVE AMALVLDNPD DPKAMEQAKA IVKELCQTYP LHTIQK
//