ID K0TLJ0_THAOC Unreviewed; 406 AA.
AC K0TLJ0;
DT 28-NOV-2012, integrated into UniProtKB/TrEMBL.
DT 28-NOV-2012, sequence version 1.
DT 24-JAN-2024, entry version 43.
DE RecName: Full=3-isopropylmalate dehydrogenase {ECO:0000256|ARBA:ARBA00013101, ECO:0000256|RuleBase:RU004445};
DE EC=1.1.1.85 {ECO:0000256|ARBA:ARBA00013101, ECO:0000256|RuleBase:RU004445};
GN ORFNames=THAOC_02929 {ECO:0000313|EMBL:EJK75346.1};
OS Thalassiosira oceanica (Marine diatom).
OC Eukaryota; Sar; Stramenopiles; Ochrophyta; Bacillariophyta;
OC Coscinodiscophyceae; Thalassiosirophycidae; Thalassiosirales;
OC Thalassiosiraceae; Thalassiosira.
OX NCBI_TaxID=159749 {ECO:0000313|EMBL:EJK75346.1, ECO:0000313|Proteomes:UP000266841};
RN [1] {ECO:0000313|EMBL:EJK75346.1, ECO:0000313|Proteomes:UP000266841}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CCMP1005 {ECO:0000313|EMBL:EJK75346.1,
RC ECO:0000313|Proteomes:UP000266841};
RX PubMed=22835381; DOI=10.1186/gb-2012-13-7-r66;
RA Lommer M., Specht M., Roy A.S., Kraemer L., Andreson R., Gutowska M.A.,
RA Wolf J., Bergner S.V., Schilhabel M.B., Klostermeier U.C., Beiko R.G.,
RA Rosenstiel P., Hippler M., Laroche J.;
RT "Genome and low-iron response of an oceanic diatom adapted to chronic iron
RT limitation.";
RL Genome Biol. 13:R66-R66(2012).
CC -!- FUNCTION: Catalyzes the oxidation of 3-carboxy-2-hydroxy-4-
CC methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2-
CC oxopentanoate. The product decarboxylates to 4-methyl-2 oxopentanoate.
CC {ECO:0000256|RuleBase:RU004445}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(2R,3S)-3-isopropylmalate + NAD(+) = 4-methyl-2-oxopentanoate
CC + CO2 + NADH; Xref=Rhea:RHEA:32271, ChEBI:CHEBI:16526,
CC ChEBI:CHEBI:17865, ChEBI:CHEBI:35121, ChEBI:CHEBI:57540,
CC ChEBI:CHEBI:57945; EC=1.1.1.85;
CC Evidence={ECO:0000256|RuleBase:RU004445};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|RuleBase:RU004445};
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|RuleBase:RU004445};
CC Note=Binds 1 Mg(2+) or Mn(2+) ion per subunit.
CC {ECO:0000256|RuleBase:RU004445};
CC -!- COFACTOR:
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|ARBA:ARBA00001936};
CC -!- PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine
CC from 3-methyl-2-oxobutanoate: step 3/4.
CC {ECO:0000256|RuleBase:RU004445}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|ARBA:ARBA00011738,
CC ECO:0000256|RuleBase:RU004445}.
CC -!- SIMILARITY: Belongs to the isocitrate and isopropylmalate
CC dehydrogenases family. {ECO:0000256|ARBA:ARBA00007769}.
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:EJK75346.1}.
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; AGNL01002985; EJK75346.1; -; Genomic_DNA.
DR AlphaFoldDB; K0TLJ0; -.
DR EnsemblProtists; EJK75346; EJK75346; THAOC_02929.
DR eggNOG; KOG0786; Eukaryota.
DR OMA; EYDLGAR; -.
DR UniPathway; UPA00048; UER00072.
DR Proteomes; UP000266841; Unassembled WGS sequence.
DR GO; GO:0003862; F:3-isopropylmalate dehydrogenase activity; IEA:UniProtKB-EC.
DR GO; GO:0000287; F:magnesium ion binding; IEA:InterPro.
DR GO; GO:0051287; F:NAD binding; IEA:InterPro.
DR GO; GO:0009098; P:leucine biosynthetic process; IEA:UniProtKB-UniPathway.
DR Gene3D; 3.40.718.10; Isopropylmalate Dehydrogenase; 1.
DR HAMAP; MF_01033; LeuB_type1; 1.
DR InterPro; IPR019818; IsoCit/isopropylmalate_DH_CS.
DR InterPro; IPR024084; IsoPropMal-DH-like_dom.
DR InterPro; IPR004429; Isopropylmalate_DH.
DR NCBIfam; TIGR00169; leuB; 1.
DR PANTHER; PTHR42979; 3-ISOPROPYLMALATE DEHYDROGENASE; 1.
DR PANTHER; PTHR42979:SF1; 3-ISOPROPYLMALATE DEHYDROGENASE; 1.
DR Pfam; PF00180; Iso_dh; 1.
DR SMART; SM01329; Iso_dh; 1.
DR SUPFAM; SSF53659; Isocitrate/Isopropylmalate dehydrogenase-like; 1.
DR PROSITE; PS00470; IDH_IMDH; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605};
KW Branched-chain amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023304,
KW ECO:0000256|RuleBase:RU004445};
KW Leucine biosynthesis {ECO:0000256|ARBA:ARBA00022430,
KW ECO:0000256|RuleBase:RU004445}; Magnesium {ECO:0000256|ARBA:ARBA00022842};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723,
KW ECO:0000256|RuleBase:RU004445};
KW NAD {ECO:0000256|ARBA:ARBA00023027, ECO:0000256|RuleBase:RU004445};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002};
KW Reference proteome {ECO:0000313|Proteomes:UP000266841};
KW Signal {ECO:0000256|SAM:SignalP}.
FT SIGNAL 1..22
FT /evidence="ECO:0000256|SAM:SignalP"
FT CHAIN 23..406
FT /note="3-isopropylmalate dehydrogenase"
FT /evidence="ECO:0000256|SAM:SignalP"
FT /id="PRO_5003838084"
FT DOMAIN 42..394
FT /note="Isopropylmalate dehydrogenase-like"
FT /evidence="ECO:0000259|SMART:SM01329"
SQ SEQUENCE 406 AA; 43023 MW; BC320E674E10F119 CRC64;
MNLPKTAALA SLLATATPFA PSAPGGRPAA RLGAVSRKDS YDITLLPGDG IGPEIMESAK
SVLSALCDRC GFELNLREAL IGGAAIDAVN DPFPDATLEA CQSADSVLLS CIGGYKWDGN
PRELRPETGL LKMRKSMGLF ANLRPAKVLD QLIDASTLKR EVVEGVDVMV VRELTGDVYF
GAPKGIDTDA DGKRVGYNNM IYSEGEIERI ARVAGDVASK RNGKLCSVDK ANVLDVSQLW
RDVVTDVITD EFPDVDLSHM YVDNAAMQLI RWPKQFDTMV TGNIFGDILS DEASMLVGSL
GMLPSASIGE SGPGVFEPCH GSAPDIAGED KANPLALILS AAMMLRYDLA RGEEADILEA
AVETVLDQGL RTADIKQEDD GCKLVGCIEM GKAVADVVAA TATVEV
//
