ID A0A0B5DA08_9ACTN Unreviewed; 295 AA.
AC A0A0B5DA08;
DT 01-APR-2015, integrated into UniProtKB/TrEMBL.
DT 01-APR-2015, sequence version 1.
DT 27-MAR-2024, entry version 47.
DE RecName: Full=3-methyl-2-oxobutanoate hydroxymethyltransferase {ECO:0000256|HAMAP-Rule:MF_00156};
DE EC=2.1.2.11 {ECO:0000256|HAMAP-Rule:MF_00156};
DE AltName: Full=Ketopantoate hydroxymethyltransferase {ECO:0000256|HAMAP-Rule:MF_00156};
DE Short=KPHMT {ECO:0000256|HAMAP-Rule:MF_00156};
GN Name=panB {ECO:0000256|HAMAP-Rule:MF_00156,
GN ECO:0000313|EMBL:QEV38984.1};
GN ORFNames=BJY54_002061 {ECO:0000313|EMBL:MBB4791449.1}, CP978_10775
GN {ECO:0000313|EMBL:QEV38984.1}, SNOD_10435
GN {ECO:0000313|EMBL:AJE40418.1};
OS Streptomyces nodosus.
OC Bacteria; Actinomycetota; Actinomycetes; Kitasatosporales;
OC Streptomycetaceae; Streptomyces.
OX NCBI_TaxID=40318 {ECO:0000313|EMBL:AJE40418.1, ECO:0000313|Proteomes:UP000031526};
RN [1] {ECO:0000313|Proteomes:UP000031526}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 14899 {ECO:0000313|Proteomes:UP000031526};
RA Sweeney P., Stephens N., Murphy C., Caffrey P.;
RT "Sequence of the Streptomyces nodosus genome.";
RL Submitted (SEP-2014) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:AJE40418.1, ECO:0000313|Proteomes:UP000031526}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 14899 {ECO:0000313|EMBL:AJE40418.1,
RC ECO:0000313|Proteomes:UP000031526};
RX PubMed=26497174;
RA Sweeney P., Murphy C.D., Caffrey P.;
RT "Exploiting the genome sequence of Streptomyces nodosus for enhanced
RT antibiotic production.";
RL Appl. Microbiol. Biotechnol. 100:1285-1295(2016).
RN [3] {ECO:0000313|EMBL:QEV38984.1, ECO:0000313|Proteomes:UP000325763}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 14899 {ECO:0000313|EMBL:QEV38984.1,
RC ECO:0000313|Proteomes:UP000325763};
RA Lee N., Cho B.-K.;
RT "Streptomyces genome completion.";
RL Submitted (SEP-2017) to the EMBL/GenBank/DDBJ databases.
RN [4] {ECO:0000313|EMBL:MBB4791449.1, ECO:0000313|Proteomes:UP000544950}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 40109 {ECO:0000313|EMBL:MBB4791449.1,
RC ECO:0000313|Proteomes:UP000544950};
RA Klenk H.-P.;
RT "Sequencing the genomes of 1000 actinobacteria strains.";
RL Submitted (AUG-2020) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the reversible reaction in which hydroxymethyl
CC group from 5,10-methylenetetrahydrofolate is transferred onto alpha-
CC ketoisovalerate to form ketopantoate. {ECO:0000256|HAMAP-
CC Rule:MF_00156}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + 3-methyl-2-
CC oxobutanoate + H2O = (6S)-5,6,7,8-tetrahydrofolate + 2-
CC dehydropantoate; Xref=Rhea:RHEA:11824, ChEBI:CHEBI:11561,
CC ChEBI:CHEBI:11851, ChEBI:CHEBI:15377, ChEBI:CHEBI:15636,
CC ChEBI:CHEBI:57453; EC=2.1.2.11; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_00156};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00156,
CC ECO:0000256|PIRSR:PIRSR000388-3};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000256|HAMAP-Rule:MF_00156,
CC ECO:0000256|PIRSR:PIRSR000388-3};
CC -!- PATHWAY: Cofactor biosynthesis; (R)-pantothenate biosynthesis; (R)-
CC pantoate from 3-methyl-2-oxobutanoate: step 1/2. {ECO:0000256|HAMAP-
CC Rule:MF_00156}.
CC -!- SUBUNIT: Homodecamer; pentamer of dimers.
CC {ECO:0000256|ARBA:ARBA00011424, ECO:0000256|HAMAP-Rule:MF_00156}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00156}.
CC -!- SIMILARITY: Belongs to the PanB family. {ECO:0000256|ARBA:ARBA00008676,
CC ECO:0000256|HAMAP-Rule:MF_00156}.
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DR EMBL; CP009313; AJE40418.1; -; Genomic_DNA.
DR EMBL; JACHMR010000001; MBB4791449.1; -; Genomic_DNA.
DR EMBL; CP023747; QEV38984.1; -; Genomic_DNA.
DR RefSeq; WP_043439833.1; NZ_JACHMR010000001.1.
DR STRING; 40318.SNOD_10435; -.
DR KEGG; snq:CP978_10775; -.
DR HOGENOM; CLU_036645_1_0_11; -.
DR OrthoDB; 9781789at2; -.
DR UniPathway; UPA00028; UER00003.
DR Proteomes; UP000031526; Chromosome.
DR Proteomes; UP000325763; Chromosome.
DR Proteomes; UP000544950; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0003864; F:3-methyl-2-oxobutanoate hydroxymethyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0008168; F:methyltransferase activity; IEA:UniProtKB-KW.
DR GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR GO; GO:0015940; P:pantothenate biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd06557; KPHMT-like; 1.
DR Gene3D; 3.20.20.60; Phosphoenolpyruvate-binding domains; 1.
DR HAMAP; MF_00156; PanB; 1.
DR InterPro; IPR003700; Pantoate_hydroxy_MeTrfase.
DR InterPro; IPR015813; Pyrv/PenolPyrv_Kinase-like_dom.
DR InterPro; IPR040442; Pyrv_Kinase-like_dom_sf.
DR NCBIfam; TIGR00222; panB; 1.
DR PANTHER; PTHR20881; 3-METHYL-2-OXOBUTANOATE HYDROXYMETHYLTRANSFERASE; 1.
DR PANTHER; PTHR20881:SF0; 3-METHYL-2-OXOBUTANOATE HYDROXYMETHYLTRANSFERASE; 1.
DR Pfam; PF02548; Pantoate_transf; 1.
DR PIRSF; PIRSF000388; Pantoate_hydroxy_MeTrfase; 1.
DR SUPFAM; SSF51621; Phosphoenolpyruvate/pyruvate domain; 1.
PE 3: Inferred from homology;
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00156};
KW Magnesium {ECO:0000256|HAMAP-Rule:MF_00156, ECO:0000256|PIRSR:PIRSR000388-
KW 3};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_00156,
KW ECO:0000256|PIRSR:PIRSR000388-3};
KW Methyltransferase {ECO:0000313|EMBL:AJE40418.1};
KW Pantothenate biosynthesis {ECO:0000256|ARBA:ARBA00022655,
KW ECO:0000256|HAMAP-Rule:MF_00156};
KW Reference proteome {ECO:0000313|Proteomes:UP000031526};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00156}.
FT REGION 1..27
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 1..17
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 212
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00156,
FT ECO:0000256|PIRSR:PIRSR000388-1"
FT BINDING 75..76
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00156,
FT ECO:0000256|PIRSR:PIRSR000388-2"
FT BINDING 75
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00156,
FT ECO:0000256|PIRSR:PIRSR000388-3"
FT BINDING 114
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00156,
FT ECO:0000256|PIRSR:PIRSR000388-2"
FT BINDING 114
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00156,
FT ECO:0000256|PIRSR:PIRSR000388-3"
FT BINDING 144
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00156,
FT ECO:0000256|PIRSR:PIRSR000388-2"
FT BINDING 146
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00156,
FT ECO:0000256|PIRSR:PIRSR000388-3"
SQ SEQUENCE 295 AA; 31198 MW; D6BA8A2EAEDB1479 CRC64;
MTQLPAAQKQ PPQGTLKPSD GSKALYGGKS TRRITVRDIT TAKERGEKWP MLTAYDAMTA
SVFDEAGIPV MLVGDSAGNC HLGYETTVPV TLDEMTMLAS AVVRGTSRAL IVGDLPFGSY
QEGPVQALRS ATRLVKEAGV GAVKLEGGER SHEQIGLLVE SGIPVMAHIG LTPQSVNSMG
YRVQGRGEEA AQQLLRDAKA VQDAGAFAVV LELVPAELAA EVTRVLHIPT VGIGAGPETD
AQVLVWTDML GLTGGRVPKF VKQYADLRQV IGDAAKAYAE DVVGGTFPRE EHSVH
//