ID   A0A2D6WNW7_9BACT        Unreviewed;       418 AA.
AC   A0A2D6WNW7;
DT   25-APR-2018, integrated into UniProtKB/TrEMBL.
DT   25-APR-2018, sequence version 1.
DT   14-DEC-2022, entry version 15.
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=CML08_03030 {ECO:0000313|EMBL:MAH40359.1};
OS   Puniceicoccaceae bacterium.
OC   Bacteria; Verrucomicrobia; Opitutae; Puniceicoccales; Puniceicoccaceae.
OX   NCBI_TaxID=2026784 {ECO:0000313|EMBL:MAH40359.1, ECO:0000313|Proteomes:UP000226557};
RN   [1] {ECO:0000313|Proteomes:UP000226557}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Tully B.J., Graham E.D., Heidelberg J.F.;
RT   "The Reconstruction of 2,631 Draft Metagenome-Assembled Genomes from the
RT   Global Oceans.";
RL   Submitted (SEP-2017) 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|HAMAP-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: Lacks conserved residue(s) required for the propagation of
CC       feature annotation. {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:MAH40359.1}.
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DR   EMBL; NZEM01000048; MAH40359.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A2D6WNW7; -.
DR   UniPathway; UPA00193; -.
DR   UniPathway; UPA00288; UER01023.
DR   Proteomes; UP000226557; 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:0008168; F:methyltransferase activity; IEA:UniProtKB-KW.
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:0032259; P:methylation; IEA:UniProtKB-KW.
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; 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|HAMAP-Rule:MF_00051};
KW   Methyltransferase {ECO:0000313|EMBL:MAH40359.1};
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};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW   Rule:MF_00051}.
FT   DOMAIN          9..387
FT                   /note="SHMT"
FT                   /evidence="ECO:0000259|Pfam:PF00464"
FT   BINDING         122
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051"
FT   BINDING         126..128
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051"
FT   BINDING         356..358
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051"
FT   SITE            230
FT                   /note="Plays an important role in substrate specificity"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051"
FT   MOD_RES         231
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00051,
FT                   ECO:0000256|PIRSR:PIRSR000412-50"
SQ   SEQUENCE   418 AA;  45097 MW;  EDCB295AF0C975D3 CRC64;
     MNPLNDTALD QLDPEIAQLI AREKARQQSH IELIASENFT YPAIMEAQGS ILTNKYAEGY
     PNKRYYGGCD FVDSIETIAI ERAKALFRAD HANVQPHAGS QANAAVYLSV LKPGDKILTM
     NLSDGGHLTH GHPMNFSGIY HEVVHYGVSI ENGLIDYDAI AESAEREQPK MITVGASAYS
     RVIDFKRMSE IARSVGAYLL ADIAHIAGLV AAGVHPSPVP YADFVTTTTH KTLRGPRGGL
     ILCKTDHAKK IDSAVFPGTQ GGPLMHVIAA KATCFKEANT DAFKTYQKQV ASNANTLANA
     LLEAGHNIVS GGTENHLFMI DLRKKYPQLT GKRAQIALDQ AHITANKNTV PGETRSPFQT
     SGIRIGTPAV TSRGFVEADM LKVAKAINLV LDSADNETTN AEAKSIALAL CSQYPLPY
//