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Database: UniProt
Entry: A0A0K9XB02_9ACTN
LinkDB: A0A0K9XB02_9ACTN
Original site: A0A0K9XB02_9ACTN 
ID   A0A0K9XB02_9ACTN        Unreviewed;       197 AA.
AC   A0A0K9XB02;
DT   11-NOV-2015, integrated into UniProtKB/TrEMBL.
DT   11-NOV-2015, sequence version 1.
DT   24-JAN-2024, entry version 32.
DE   RecName: Full=Pyridoxal 5'-phosphate synthase subunit PdxT {ECO:0000256|HAMAP-Rule:MF_01615};
DE            EC=4.3.3.6 {ECO:0000256|HAMAP-Rule:MF_01615};
DE   AltName: Full=Pdx2 {ECO:0000256|HAMAP-Rule:MF_01615};
DE   AltName: Full=Pyridoxal 5'-phosphate synthase glutaminase subunit {ECO:0000256|HAMAP-Rule:MF_01615};
DE            EC=3.5.1.2 {ECO:0000256|HAMAP-Rule:MF_01615};
GN   Name=pdxT {ECO:0000256|HAMAP-Rule:MF_01615};
GN   ORFNames=AC230_24085 {ECO:0000313|EMBL:KNB49832.1};
OS   Streptomyces caatingaensis.
OC   Bacteria; Actinomycetota; Actinomycetes; Kitasatosporales;
OC   Streptomycetaceae; Streptomyces.
OX   NCBI_TaxID=1678637 {ECO:0000313|EMBL:KNB49832.1, ECO:0000313|Proteomes:UP000037288};
RN   [1] {ECO:0000313|Proteomes:UP000037288}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CMAA 1322 {ECO:0000313|Proteomes:UP000037288};
RA   Santos S.N., Gacesa R., Taketani R.G., Long P.F., Melo I.S.;
RT   "Draft genome sequence of Streptomyces sp. CMAA 1322, a bacterium isolated
RT   from Caatinga biome, from dry forest semiarid of Brazil.";
RL   Submitted (JUL-2015) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the hydrolysis of glutamine to glutamate and
CC       ammonia as part of the biosynthesis of pyridoxal 5'-phosphate. The
CC       resulting ammonia molecule is channeled to the active site of PdxS.
CC       {ECO:0000256|HAMAP-Rule:MF_01615}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + L-glutamine = L-glutamate + NH4(+);
CC         Xref=Rhea:RHEA:15889, ChEBI:CHEBI:15377, ChEBI:CHEBI:28938,
CC         ChEBI:CHEBI:29985, ChEBI:CHEBI:58359; EC=3.5.1.2;
CC         Evidence={ECO:0000256|HAMAP-Rule:MF_01615};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=aldehydo-D-ribose 5-phosphate + D-glyceraldehyde 3-phosphate +
CC         L-glutamine = H(+) + 3 H2O + L-glutamate + phosphate + pyridoxal 5'-
CC         phosphate; Xref=Rhea:RHEA:31507, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:29985, ChEBI:CHEBI:43474,
CC         ChEBI:CHEBI:58273, ChEBI:CHEBI:58359, ChEBI:CHEBI:59776,
CC         ChEBI:CHEBI:597326; EC=4.3.3.6; Evidence={ECO:0000256|HAMAP-
CC         Rule:MF_01615};
CC   -!- PATHWAY: Cofactor biosynthesis; pyridoxal 5'-phosphate biosynthesis.
CC       {ECO:0000256|HAMAP-Rule:MF_01615}.
CC   -!- SUBUNIT: In the presence of PdxS, forms a dodecamer of heterodimers.
CC       Only shows activity in the heterodimer. {ECO:0000256|HAMAP-
CC       Rule:MF_01615}.
CC   -!- SIMILARITY: Belongs to the glutaminase PdxT/SNO family.
CC       {ECO:0000256|ARBA:ARBA00008345, ECO:0000256|HAMAP-Rule:MF_01615}.
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:KNB49832.1}.
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DR   EMBL; LFXA01000017; KNB49832.1; -; Genomic_DNA.
DR   RefSeq; WP_049718381.1; NZ_LFXA01000017.1.
DR   AlphaFoldDB; A0A0K9XB02; -.
DR   STRING; 1678637.AC230_24085; -.
DR   PATRIC; fig|1678637.3.peg.5147; -.
DR   OrthoDB; 9810320at2; -.
DR   UniPathway; UPA00245; -.
DR   Proteomes; UP000037288; Unassembled WGS sequence.
DR   GO; GO:0004359; F:glutaminase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0036381; F:pyridoxal 5'-phosphate synthase (glutamine hydrolysing) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0016740; F:transferase activity; IEA:UniProtKB-KW.
DR   GO; GO:0006543; P:glutamine catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0042823; P:pyridoxal phosphate biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd01749; GATase1_PB; 1.
DR   Gene3D; 3.40.50.880; -; 1.
DR   HAMAP; MF_01615; PdxT; 1.
DR   InterPro; IPR029062; Class_I_gatase-like.
DR   InterPro; IPR002161; PdxT/SNO.
DR   InterPro; IPR021196; PdxT/SNO_CS.
DR   NCBIfam; TIGR03800; PLP_synth_Pdx2; 1.
DR   PANTHER; PTHR31559; PYRIDOXAL 5'-PHOSPHATE SYNTHASE SUBUNIT SNO; 1.
DR   PANTHER; PTHR31559:SF0; PYRIDOXAL 5'-PHOSPHATE SYNTHASE SUBUNIT SNO1-RELATED; 1.
DR   Pfam; PF01174; SNO; 1.
DR   PIRSF; PIRSF005639; Glut_amidoT_SNO; 1.
DR   SUPFAM; SSF52317; Class I glutamine amidotransferase-like; 1.
DR   PROSITE; PS51274; GATASE_COBBQ; 1.
DR   PROSITE; PS51273; GATASE_TYPE_1; 1.
DR   PROSITE; PS01236; PDXT_SNO_1; 1.
DR   PROSITE; PS51130; PDXT_SNO_2; 1.
PE   3: Inferred from homology;
KW   Glutamine amidotransferase {ECO:0000256|HAMAP-Rule:MF_01615,
KW   ECO:0000256|PROSITE-ProRule:PRU00606};
KW   Hydrolase {ECO:0000256|HAMAP-Rule:MF_01615};
KW   Lyase {ECO:0000256|HAMAP-Rule:MF_01615};
KW   Pyridoxal phosphate {ECO:0000256|HAMAP-Rule:MF_01615};
KW   Reference proteome {ECO:0000313|Proteomes:UP000037288};
KW   Transferase {ECO:0000313|EMBL:KNB49832.1}.
FT   ACT_SITE        81
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01615,
FT                   ECO:0000256|PIRSR:PIRSR005639-1"
FT   ACT_SITE        175
FT                   /evidence="ECO:0000256|PROSITE-ProRule:PRU00605"
FT   ACT_SITE        175
FT                   /note="Charge relay system"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01615,
FT                   ECO:0000256|PIRSR:PIRSR005639-1"
FT   ACT_SITE        177
FT                   /evidence="ECO:0000256|PROSITE-ProRule:PRU00605"
FT   ACT_SITE        177
FT                   /note="Charge relay system"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01615,
FT                   ECO:0000256|PIRSR:PIRSR005639-1"
FT   BINDING         49..51
FT                   /ligand="L-glutamine"
FT                   /ligand_id="ChEBI:CHEBI:58359"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01615,
FT                   ECO:0000256|PIRSR:PIRSR005639-2"
FT   BINDING         110
FT                   /ligand="L-glutamine"
FT                   /ligand_id="ChEBI:CHEBI:58359"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01615,
FT                   ECO:0000256|PIRSR:PIRSR005639-2"
FT   BINDING         139..140
FT                   /ligand="L-glutamine"
FT                   /ligand_id="ChEBI:CHEBI:58359"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01615,
FT                   ECO:0000256|PIRSR:PIRSR005639-2"
SQ   SEQUENCE   197 AA;  21085 MW;  737CC6350729EE22 CRC64;
     MSTPTIGVLA LQGDVREHLV ALAAADAVAR PVRRPEELAE VDGLVIPGGE STTMSKLAVV
     FGMLEPLRER VRSGMPVYGT CAGMIMLADK ILDGREDQET LGGIDMIVRR NAFGRQNESF
     EAAVEMAGVA GGPVEGVFIR APWVESVGAR AEVLAVHDGH TVAVRQDHVL ATSFHPELTG
     DHRVHALFVE MVRAART
//
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