PANB1_BURCM
ID PANB1_BURCM Reviewed; 271 AA.
AC Q0BI15;
DT 24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT 17-OCT-2006, sequence version 1.
DT 03-AUG-2022, entry version 88.
DE RecName: Full=3-methyl-2-oxobutanoate hydroxymethyltransferase 1 {ECO:0000255|HAMAP-Rule:MF_00156};
DE EC=2.1.2.11 {ECO:0000255|HAMAP-Rule:MF_00156};
DE AltName: Full=Ketopantoate hydroxymethyltransferase 1 {ECO:0000255|HAMAP-Rule:MF_00156};
DE Short=KPHMT 1 {ECO:0000255|HAMAP-Rule:MF_00156};
GN Name=panB1 {ECO:0000255|HAMAP-Rule:MF_00156}; OrderedLocusNames=Bamb_0649;
OS Burkholderia ambifaria (strain ATCC BAA-244 / AMMD) (Burkholderia cepacia
OS (strain AMMD)).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Burkholderiaceae; Burkholderia; Burkholderia cepacia complex.
OX NCBI_TaxID=339670;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-244 / AMMD;
RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA Glavina del Rio T., Hammon N., Israni S., Pitluck S., Bruce D., Chain P.,
RA Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA Hauser L., Kyrpides N., Kim E., Parke J., Coenye T., Konstantinidis K.,
RA Ramette A., Tiedje J., Richardson P.;
RT "Complete sequence of chromosome 1 of Burkholderia cepacia AMMD.";
RL Submitted (AUG-2006) 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:0000255|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:0000255|HAMAP-
CC Rule:MF_00156};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00156};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00156};
CC -!- PATHWAY: Cofactor biosynthesis; (R)-pantothenate biosynthesis; (R)-
CC pantoate from 3-methyl-2-oxobutanoate: step 1/2. {ECO:0000255|HAMAP-
CC Rule:MF_00156}.
CC -!- SUBUNIT: Homodecamer; pentamer of dimers. {ECO:0000255|HAMAP-
CC Rule:MF_00156}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00156}.
CC -!- SIMILARITY: Belongs to the PanB family. {ECO:0000255|HAMAP-
CC Rule:MF_00156}.
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DR EMBL; CP000440; ABI86208.1; -; Genomic_DNA.
DR RefSeq; WP_011656041.1; NZ_CP009798.1.
DR AlphaFoldDB; Q0BI15; -.
DR SMR; Q0BI15; -.
DR STRING; 339670.Bamb_0649; -.
DR EnsemblBacteria; ABI86208; ABI86208; Bamb_0649.
DR GeneID; 44691332; -.
DR KEGG; bam:Bamb_0649; -.
DR PATRIC; fig|339670.21.peg.947; -.
DR eggNOG; COG0413; Bacteria.
DR OMA; VLVWTDM; -.
DR UniPathway; UPA00028; UER00003.
DR Proteomes; UP000000662; Chromosome 1.
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:0015940; P:pantothenate biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd06557; KPHMT-like; 1.
DR Gene3D; 3.20.20.60; -; 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 PANTHER; PTHR20881; PTHR20881; 1.
DR Pfam; PF02548; Pantoate_transf; 1.
DR PIRSF; PIRSF000388; Pantoate_hydroxy_MeTrfase; 1.
DR SUPFAM; SSF51621; SSF51621; 1.
DR TIGRFAMs; TIGR00222; panB; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Magnesium; Metal-binding; Pantothenate biosynthesis;
KW Transferase.
FT CHAIN 1..271
FT /note="3-methyl-2-oxobutanoate hydroxymethyltransferase 1"
FT /id="PRO_0000297231"
FT ACT_SITE 189
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 53..54
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 53
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 92
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 92
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 120
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 122
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
SQ SEQUENCE 271 AA; 28740 MW; 1C650F489D4B7D26 CRC64;
MTYLQESSRP AVTVPKLQAM RDAGEKIAML TCYDASFAAL LDRSGVDVLL IGDSLGNVLQ
GHTTTLPVSL DDIAYHTACV ARAQPRALII ADLPFGTYGT PAEAFASAVK LMRAGAQMIK
LEGGEWLAET IRFLVERAVP VCAHVGLTPQ SVHAFGGFKV QGKTEAGAAQ LLRDARAVED
AGAQLVVLEA VPTLVASEVT HMLKIPTIGI GAGTDCSGQV LVLHDMLGIF PGKRPRFVKD
FMQGQPTIQA AVEAYVRAVK DSSFPGPEHS F
