PANB_GRAFK
ID PANB_GRAFK Reviewed; 272 AA.
AC A0M360;
DT 24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT 24-JUL-2007, sequence version 2.
DT 03-AUG-2022, entry version 87.
DE RecName: Full=3-methyl-2-oxobutanoate hydroxymethyltransferase {ECO:0000255|HAMAP-Rule:MF_00156};
DE EC=2.1.2.11 {ECO:0000255|HAMAP-Rule:MF_00156};
DE AltName: Full=Ketopantoate hydroxymethyltransferase {ECO:0000255|HAMAP-Rule:MF_00156};
DE Short=KPHMT {ECO:0000255|HAMAP-Rule:MF_00156};
GN Name=panB {ECO:0000255|HAMAP-Rule:MF_00156}; OrderedLocusNames=GFO_2090;
OS Gramella forsetii (strain KT0803).
OC Bacteria; Bacteroidetes; Flavobacteriia; Flavobacteriales;
OC Flavobacteriaceae; Gramella.
OX NCBI_TaxID=411154;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KT0803;
RX PubMed=17107561; DOI=10.1111/j.1462-2920.2006.01152.x;
RA Bauer M., Kube M., Teeling H., Richter M., Lombardot T., Allers E.,
RA Wuerdemann C.A., Quast C., Kuhl H., Knaust F., Woebken D., Bischof K.,
RA Mussmann M., Choudhuri J.V., Meyer F., Reinhardt R., Amann R.I.,
RA Gloeckner F.O.;
RT "Whole genome analysis of the marine Bacteroidetes'Gramella forsetii'
RT reveals adaptations to degradation of polymeric organic matter.";
RL Environ. Microbiol. 8:2201-2213(2006).
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}.
CC -!- SEQUENCE CAUTION:
CC Sequence=CAL67055.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR EMBL; CU207366; CAL67055.1; ALT_INIT; Genomic_DNA.
DR RefSeq; WP_041250085.1; NC_008571.1.
DR AlphaFoldDB; A0M360; -.
DR SMR; A0M360; -.
DR STRING; 411154.GFO_2090; -.
DR EnsemblBacteria; CAL67055; CAL67055; GFO_2090.
DR KEGG; gfo:GFO_2090; -.
DR eggNOG; COG0413; Bacteria.
DR HOGENOM; CLU_036645_1_0_10; -.
DR OrthoDB; 916845at2; -.
DR UniPathway; UPA00028; UER00003.
DR Proteomes; UP000000755; Chromosome.
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..272
FT /note="3-methyl-2-oxobutanoate hydroxymethyltransferase"
FT /id="PRO_0000297276"
FT ACT_SITE 190
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 52..53
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 52
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 91
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 91
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 121
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 123
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
SQ SEQUENCE 272 AA; 29961 MW; 4CA6EC44595DBC5F CRC64;
MSVAKKEYKR ITVKSLVDMK SNGEKISMLT AYDFTMAQIV DGAGIDVILV GDSASNVMAG
HETTLPITLD QMIYHATSVV RAITRSLVVV DLPFGSYQSD PKEALRSAIR IMKESGGHAV
KLEGGKEVKE SIKRIIHAGI PVMGHLGLTP QSIYKFGTYT VRAKEEQEAE KLKSDAKLLE
KMGCFAIVLE KVPAELAKEV AESITIPVIG IGAGNGVDGQ VLVVHDMLGM THEFNPRFLR
RYADLHGEMT KAFQNYRDDV KSRKFPSDDE QY
