GenomeNet

Database: UniProt
Entry: E8TH57_MESCW
LinkDB: E8TH57_MESCW
Original site: E8TH57_MESCW 
ID   E8TH57_MESCW            Unreviewed;       339 AA.
AC   E8TH57;
DT   05-APR-2011, integrated into UniProtKB/TrEMBL.
DT   05-APR-2011, sequence version 1.
DT   27-MAR-2024, entry version 78.
DE   RecName: Full=Ketol-acid reductoisomerase (NADP(+)) {ECO:0000256|HAMAP-Rule:MF_00435};
DE            Short=KARI {ECO:0000256|HAMAP-Rule:MF_00435};
DE            EC=1.1.1.86 {ECO:0000256|HAMAP-Rule:MF_00435};
DE   AltName: Full=Acetohydroxy-acid isomeroreductase {ECO:0000256|HAMAP-Rule:MF_00435};
DE            Short=AHIR {ECO:0000256|HAMAP-Rule:MF_00435};
DE   AltName: Full=Alpha-keto-beta-hydroxylacyl reductoisomerase {ECO:0000256|HAMAP-Rule:MF_00435};
GN   Name=ilvC {ECO:0000256|HAMAP-Rule:MF_00435};
GN   OrderedLocusNames=Mesci_3259 {ECO:0000313|EMBL:ADV12382.1};
OS   Mesorhizobium ciceri biovar biserrulae (strain HAMBI 2942 / LMG 23838 /
OS   WSM1271).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomicrobiales;
OC   Phyllobacteriaceae; Mesorhizobium.
OX   NCBI_TaxID=765698 {ECO:0000313|EMBL:ADV12382.1, ECO:0000313|Proteomes:UP000007471};
RN   [1] {ECO:0000313|Proteomes:UP000007471}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HAMBI 2942 / LMG 23838 / WSM1271
RC   {ECO:0000313|Proteomes:UP000007471};
RA   Lucas S., Copeland A., Lapidus A., Cheng J.-F., Goodwin L., Pitluck S.,
RA   Teshima H., Detter J.C., Han C., Tapia R., Land M., Hauser L., Kyrpides N.,
RA   Ivanova N., Nandasena K., Reeve W.G., Howieson J.G., O'Hara G.,
RA   Tiwari R.P., Woyke T.;
RT   "Complete sequence of chromosome of Mesorhizobium ciceri bv. biserrulae
RT   WSM1271.";
RL   Submitted (JAN-2011) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Involved in the biosynthesis of branched-chain amino acids
CC       (BCAA). Catalyzes an alkyl-migration followed by a ketol-acid reduction
CC       of (S)-2-acetolactate (S2AL) to yield (R)-2,3-dihydroxy-isovalerate. In
CC       the isomerase reaction, S2AL is rearranged via a Mg-dependent methyl
CC       migration to produce 3-hydroxy-3-methyl-2-ketobutyrate (HMKB). In the
CC       reductase reaction, this 2-ketoacid undergoes a metal-dependent
CC       reduction by NADPH to yield (R)-2,3-dihydroxy-isovalerate.
CC       {ECO:0000256|ARBA:ARBA00002172, ECO:0000256|HAMAP-Rule:MF_00435}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(2R)-2,3-dihydroxy-3-methylbutanoate + NADP(+) = (2S)-2-
CC         acetolactate + H(+) + NADPH; Xref=Rhea:RHEA:22068, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:49072, ChEBI:CHEBI:57783, ChEBI:CHEBI:58349,
CC         ChEBI:CHEBI:58476; EC=1.1.1.86;
CC         Evidence={ECO:0000256|ARBA:ARBA00000507, ECO:0000256|HAMAP-
CC         Rule:MF_00435};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(2R,3R)-2,3-dihydroxy-3-methylpentanoate + NADP(+) = (S)-2-
CC         ethyl-2-hydroxy-3-oxobutanoate + H(+) + NADPH; Xref=Rhea:RHEA:13493,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:49256, ChEBI:CHEBI:49258,
CC         ChEBI:CHEBI:57783, ChEBI:CHEBI:58349; EC=1.1.1.86;
CC         Evidence={ECO:0000256|HAMAP-Rule:MF_00435};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000256|HAMAP-Rule:MF_00435};
CC       Note=Binds 2 magnesium ions per subunit. {ECO:0000256|HAMAP-
CC       Rule:MF_00435};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-isoleucine biosynthesis; L-
CC       isoleucine from 2-oxobutanoate: step 2/4.
CC       {ECO:0000256|ARBA:ARBA00004885, ECO:0000256|HAMAP-Rule:MF_00435}.
CC   -!- PATHWAY: Amino-acid biosynthesis; L-valine biosynthesis; L-valine from
CC       pyruvate: step 2/4. {ECO:0000256|ARBA:ARBA00004864, ECO:0000256|HAMAP-
CC       Rule:MF_00435}.
CC   -!- SIMILARITY: Belongs to the ketol-acid reductoisomerase family.
CC       {ECO:0000256|ARBA:ARBA00010318, ECO:0000256|HAMAP-Rule:MF_00435,
CC       ECO:0000256|PROSITE-ProRule:PRU01198}.
CC   -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC       feature annotation. {ECO:0000256|HAMAP-Rule:MF_00435}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; CP002447; ADV12382.1; -; Genomic_DNA.
DR   RefSeq; WP_013531065.1; NC_014923.1.
DR   RefSeq; YP_004142432.1; NC_014923.1.
DR   AlphaFoldDB; E8TH57; -.
DR   STRING; 765698.Mesci_3259; -.
DR   KEGG; mci:Mesci_3259; -.
DR   PATRIC; fig|765698.3.peg.3755; -.
DR   eggNOG; COG0059; Bacteria.
DR   HOGENOM; CLU_033821_0_1_5; -.
DR   OrthoDB; 9804088at2; -.
DR   UniPathway; UPA00047; UER00056.
DR   UniPathway; UPA00049; UER00060.
DR   Proteomes; UP000007471; Chromosome.
DR   GO; GO:0016853; F:isomerase activity; IEA:UniProtKB-KW.
DR   GO; GO:0004455; F:ketol-acid reductoisomerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0050661; F:NADP binding; IEA:InterPro.
DR   GO; GO:0009097; P:isoleucine biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0009099; P:valine biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 6.10.240.10; -; 1.
DR   Gene3D; 3.40.50.720; NAD(P)-binding Rossmann-like Domain; 1.
DR   HAMAP; MF_00435; IlvC; 1.
DR   InterPro; IPR008927; 6-PGluconate_DH-like_C_sf.
DR   InterPro; IPR013023; KARI.
DR   InterPro; IPR000506; KARI_C.
DR   InterPro; IPR013116; KARI_N.
DR   InterPro; IPR014359; KARI_prok.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   NCBIfam; TIGR00465; ilvC; 1.
DR   PANTHER; PTHR21371; KETOL-ACID REDUCTOISOMERASE, MITOCHONDRIAL; 1.
DR   PANTHER; PTHR21371:SF1; KETOL-ACID REDUCTOISOMERASE, MITOCHONDRIAL; 1.
DR   Pfam; PF01450; IlvC; 1.
DR   Pfam; PF07991; IlvN; 1.
DR   PIRSF; PIRSF000116; IlvC_gammaproteo; 2.
DR   SUPFAM; SSF48179; 6-phosphogluconate dehydrogenase C-terminal domain-like; 1.
DR   SUPFAM; SSF51735; NAD(P)-binding Rossmann-fold domains; 1.
DR   PROSITE; PS51851; KARI_C; 1.
DR   PROSITE; PS51850; KARI_N; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW   Rule:MF_00435};
KW   Branched-chain amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023304,
KW   ECO:0000256|HAMAP-Rule:MF_00435}; Isomerase {ECO:0000313|EMBL:ADV12382.1};
KW   Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_00435};
KW   Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW   Rule:MF_00435}; NADP {ECO:0000256|HAMAP-Rule:MF_00435};
KW   Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW   Rule:MF_00435}.
FT   DOMAIN          1..182
FT                   /note="KARI N-terminal Rossmann"
FT                   /evidence="ECO:0000259|PROSITE:PS51850"
FT   DOMAIN          183..328
FT                   /note="KARI C-terminal knotted"
FT                   /evidence="ECO:0000259|PROSITE:PS51851"
FT   ACT_SITE        108
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435"
FT   BINDING         24..27
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435"
FT   BINDING         48
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435"
FT   BINDING         51
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435"
FT   BINDING         53
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435"
FT   BINDING         134
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435"
FT   BINDING         191
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435,
FT                   ECO:0000256|PROSITE-ProRule:PRU01198"
FT   BINDING         191
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435,
FT                   ECO:0000256|PROSITE-ProRule:PRU01198"
FT   BINDING         195
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435,
FT                   ECO:0000256|PROSITE-ProRule:PRU01198"
FT   BINDING         227
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435,
FT                   ECO:0000256|PROSITE-ProRule:PRU01198"
FT   BINDING         231
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435,
FT                   ECO:0000256|PROSITE-ProRule:PRU01198"
FT   BINDING         252
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00435,
FT                   ECO:0000256|PROSITE-ProRule:PRU01198"
SQ   SEQUENCE   339 AA;  36798 MW;  9A27989D82E0ED16 CRC64;
     MRVYYDRDAD LNLIKGKKVA IIGYGSQGRA HALNLKDSGA KEIAIGLKAG SATAKKVEAD
     GLKVMSVADA AKWADLMMMA TPDELQADIY KNEIAPNIRD GAAIAFAHGL NVHFGLIEPK
     STVDVVMIAP KGPGHTVRGE YQKGGGVPCL VAVNQDASGN ALDLALSYAC GVGGGRSGII
     ETNFREECET DLFGEQVVLC GGLVELIRAG FETLVEAGYA PEMAYFECLH EVKLIVDLIY
     EGGIANMNYS ISNTAEWGEY VSGPRIITAE TKAEMKRVLK DIQTGKFTSE WMQEYRAGMS
     RFKGIRRNND SHQIEEVGAK LRAMMPWISK NKLVDKAKN
//
DBGET integrated database retrieval system