ID A0A1Y2K4I4_9PROT Unreviewed; 565 AA.
AC A0A1Y2K4I4;
DT 30-AUG-2017, integrated into UniProtKB/TrEMBL.
DT 30-AUG-2017, sequence version 1.
DT 27-MAR-2024, entry version 30.
DE RecName: Full=Acetolactate synthase {ECO:0000256|ARBA:ARBA00013145, ECO:0000256|RuleBase:RU003591};
DE EC=2.2.1.6 {ECO:0000256|ARBA:ARBA00013145, ECO:0000256|RuleBase:RU003591};
GN ORFNames=MAIT1_04159 {ECO:0000313|EMBL:OSM04287.1};
OS Magnetofaba australis IT-1.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Magnetococcales;
OC Magnetococcaceae; Magnetofaba.
OX NCBI_TaxID=1434232 {ECO:0000313|EMBL:OSM04287.1, ECO:0000313|Proteomes:UP000194003};
RN [1] {ECO:0000313|EMBL:OSM04287.1, ECO:0000313|Proteomes:UP000194003}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=IT-1 {ECO:0000313|EMBL:OSM04287.1,
RC ECO:0000313|Proteomes:UP000194003};
RX PubMed=27801294; DOI=10.1186/s12864-016-3064-9;
RA Araujo A.C., Morillo V., Cypriano J., Teixeira L.C., Leao P., Lyra S.,
RA Almeida L.G., Bazylinski D.A., Vasconcellos A.T., Abreu F., Lins U.;
RT "Combined genomic and structural analyses of a cultured magnetotactic
RT bacterium reveals its niche adaptation to a dynamic environment.";
RL BMC Genomics 17:726-726(2016).
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H(+) + 2 pyruvate = (2S)-2-acetolactate + CO2;
CC Xref=Rhea:RHEA:25249, ChEBI:CHEBI:15361, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:16526, ChEBI:CHEBI:58476; EC=2.2.1.6;
CC Evidence={ECO:0000256|RuleBase:RU003591};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|RuleBase:RU003591};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000256|RuleBase:RU003591};
CC -!- COFACTOR:
CC Name=thiamine diphosphate; Xref=ChEBI:CHEBI:58937;
CC Evidence={ECO:0000256|RuleBase:RU003591};
CC Note=Binds 1 thiamine pyrophosphate per subunit.
CC {ECO:0000256|RuleBase:RU003591};
CC -!- PATHWAY: Amino-acid biosynthesis; L-isoleucine biosynthesis; L-
CC isoleucine from 2-oxobutanoate: step 1/4.
CC {ECO:0000256|ARBA:ARBA00004974, ECO:0000256|RuleBase:RU003591}.
CC -!- PATHWAY: Amino-acid biosynthesis; L-valine biosynthesis; L-valine from
CC pyruvate: step 1/4. {ECO:0000256|ARBA:ARBA00005025,
CC ECO:0000256|RuleBase:RU003591}.
CC -!- SIMILARITY: Belongs to the TPP enzyme family.
CC {ECO:0000256|ARBA:ARBA00007812, ECO:0000256|RuleBase:RU003591}.
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:OSM04287.1}.
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DR EMBL; LVJN01000019; OSM04287.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1Y2K4I4; -.
DR STRING; 1434232.MAIT1_04159; -.
DR OrthoDB; 4494979at2; -.
DR UniPathway; UPA00047; UER00055.
DR UniPathway; UPA00049; UER00059.
DR Proteomes; UP000194003; Unassembled WGS sequence.
DR GO; GO:0003984; F:acetolactate synthase activity; IEA:UniProtKB-EC.
DR GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:InterPro.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0030976; F:thiamine pyrophosphate binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009097; P:isoleucine biosynthetic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0009099; P:valine biosynthetic process; IEA:UniProtKB-UniPathway.
DR CDD; cd02015; TPP_AHAS; 1.
DR CDD; cd07035; TPP_PYR_POX_like; 1.
DR Gene3D; 3.40.50.970; -; 2.
DR Gene3D; 3.40.50.1220; TPP-binding domain; 1.
DR InterPro; IPR012846; Acetolactate_synth_lsu.
DR InterPro; IPR039368; AHAS_TPP.
DR InterPro; IPR029035; DHS-like_NAD/FAD-binding_dom.
DR InterPro; IPR029061; THDP-binding.
DR InterPro; IPR012000; Thiamin_PyroP_enz_cen_dom.
DR InterPro; IPR012001; Thiamin_PyroP_enz_TPP-bd_dom.
DR InterPro; IPR045229; TPP_enz.
DR InterPro; IPR011766; TPP_enzyme_TPP-bd.
DR NCBIfam; TIGR00118; acolac_lg; 1.
DR PANTHER; PTHR18968:SF13; ACETOLACTATE SYNTHASE CATALYTIC SUBUNIT, MITOCHONDRIAL; 1.
DR PANTHER; PTHR18968; THIAMINE PYROPHOSPHATE ENZYMES; 1.
DR Pfam; PF02775; TPP_enzyme_C; 1.
DR Pfam; PF00205; TPP_enzyme_M; 1.
DR Pfam; PF02776; TPP_enzyme_N; 1.
DR SUPFAM; SSF52467; DHS-like NAD/FAD-binding domain; 1.
DR SUPFAM; SSF52518; Thiamin diphosphate-binding fold (THDP-binding); 2.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605,
KW ECO:0000256|RuleBase:RU003591};
KW Branched-chain amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023304,
KW ECO:0000256|RuleBase:RU003591}; Magnesium {ECO:0000256|RuleBase:RU003591};
KW Metal-binding {ECO:0000256|RuleBase:RU003591};
KW Reference proteome {ECO:0000313|Proteomes:UP000194003};
KW Thiamine pyrophosphate {ECO:0000256|RuleBase:RU003591};
KW Transferase {ECO:0000256|RuleBase:RU003591}.
FT DOMAIN 4..120
FT /note="Thiamine pyrophosphate enzyme N-terminal TPP-
FT binding"
FT /evidence="ECO:0000259|Pfam:PF02776"
FT DOMAIN 195..329
FT /note="Thiamine pyrophosphate enzyme central"
FT /evidence="ECO:0000259|Pfam:PF00205"
FT DOMAIN 393..540
FT /note="Thiamine pyrophosphate enzyme TPP-binding"
FT /evidence="ECO:0000259|Pfam:PF02775"
SQ SEQUENCE 565 AA; 61972 MW; 355F4E3C3DF4071C CRC64;
MQLNGAQIVV ECLLEQGVKS VFGYPGGAVL YIYDEIFKNK ERIHHYLFRH EQGALHAADG
YARATGEVGV ALVTSGPGAT NAVTGLATAY MDSIPMVCIT GQVPVALIGN DAFQEADIVG
ITRSCTKHNY LVKDIKDLAR VLREAFYIAR TGRPGPVVVD IPKDITNQMF EFTPASGDPV
IRSYKPTSEG HTGQIRKAVK LMANAKRPLL YTGGGVLLSN ASDELTEMTR AWGAPITNTL
MGLGAYPASD KQFVGMLGMH GTYEANMAVS RCDLLVAIGA RFDDRVTGKI SEFAPEAEII
HVDVDPTSIS KNVAVDVPIV GDIKPVLEKM LPMVLEEKFQ SKKPDLTDWW AEIDQWRKQD
CLRYEQKEDV IEAQFVIQKL HELTNGNAIV ATDVGQHQMW AAQFYGFEKP RRWLTSGGLG
TMGYGLPAAL GAQVAHPEET VVLISGEGSF QMNLQELATA FQYRLPVKIA ILNNGFLGMV
RQWQEFFYES RYAESVMEVT PDFMKLADAF GATGIRATHP KEVVPAIEKA LATKGPVIMD
FHVNREANVY PMVPAGAALN EMILL
//
