ID A0A1D3DPN3_9ACTN Unreviewed; 617 AA.
AC A0A1D3DPN3;
DT 30-NOV-2016, integrated into UniProtKB/TrEMBL.
DT 30-NOV-2016, sequence version 1.
DT 27-MAR-2024, entry version 36.
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=J116_007185 {ECO:0000313|EMBL:OEJ94284.1};
OS Streptomyces thermolilacinus SPC6.
OC Bacteria; Actinomycetota; Actinomycetes; Kitasatosporales;
OC Streptomycetaceae; Streptomyces.
OX NCBI_TaxID=1306406 {ECO:0000313|EMBL:OEJ94284.1, ECO:0000313|Proteomes:UP000095329};
RN [1] {ECO:0000313|EMBL:OEJ94284.1, ECO:0000313|Proteomes:UP000095329}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SPC6 {ECO:0000313|EMBL:OEJ94284.1,
RC ECO:0000313|Proteomes:UP000095329};
RX PubMed=23868127;
RA Chen X., Zhang B., Zhang W., Wu X., Zhang M., Chen T., Liu G., Dyson P.;
RT "Genome Sequence of Streptomyces violaceusniger Strain SPC6, a Halotolerant
RT Streptomycete That Exhibits Rapid Growth and Development.";
RL Genome Announc. 1:0-0(2013).
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:OEJ94284.1}.
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DR EMBL; ASHX02000001; OEJ94284.1; -; Genomic_DNA.
DR RefSeq; WP_023586411.1; NZ_ASHX02000001.1.
DR AlphaFoldDB; A0A1D3DPN3; -.
DR STRING; 1306406.J116_007185; -.
DR eggNOG; COG0028; Bacteria.
DR OrthoDB; 4494979at2; -.
DR UniPathway; UPA00047; UER00055.
DR UniPathway; UPA00049; UER00059.
DR Proteomes; UP000095329; 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; IPR000399; TPP-bd_CS.
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.
DR PROSITE; PS00187; TPP_ENZYMES; 1.
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 Thiamine pyrophosphate {ECO:0000256|RuleBase:RU003591};
KW Transferase {ECO:0000256|RuleBase:RU003591}.
FT DOMAIN 29..143
FT /note="Thiamine pyrophosphate enzyme N-terminal TPP-
FT binding"
FT /evidence="ECO:0000259|Pfam:PF02776"
FT DOMAIN 218..353
FT /note="Thiamine pyrophosphate enzyme central"
FT /evidence="ECO:0000259|Pfam:PF00205"
FT DOMAIN 417..580
FT /note="Thiamine pyrophosphate enzyme TPP-binding"
FT /evidence="ECO:0000259|Pfam:PF02775"
FT REGION 1..23
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 617 AA; 65388 MW; CABA4ED24648C21A CRC64;
MTEQATGAHH PQPRPRSGGQ PSATVEYVTG AQSLIRSLEE VGAETVFGIP GGAILPAYDP
MMDSTRVRHI LVRHEQGAGH AATGYAQATG RVGVCMATSG PGATNLVTPI ADAHMDSVPL
VAITGQVASK AIGTDAFQEA DICGITMPIT KHNFLVTKAE EIPRTIAEAF HIASTGRPGP
VLVDIAKDAL QARTTFSWPP QTDLPGYRPV TKPHAKQIRE AAKLITSAKR PVLYVGGGVL
KAGATAELKV LAELTGAPVT TTLMALGAFP DTHPLHVGMP GMHGSVTAVT ALQKADLIVA
LGARFDDRVT GKLDSFAPYA KVVHADIDPA EIGKNRAADV PIVGDAREVI ADLVQAVQAE
HTAGHTGDYS AWWKDLNRWR ETYPLGYDQP EDGSLAPQQV IQRIGQLAPE GTIFAAGVGQ
HQMWAAHFID YDQPATWLNS GGAGTMGYAV PAAMGAKAGA PDRTVWAIDG DGCFQMTNQE
LVTCALNNIP IKVAIINNGA LGMVRQWQTL FYNQRYSNTV LHSGPDASGK EPSAGTRVPD
FVKLSEAMGC VALRCERPED LDKVIAEANA INDRPVVIDF IVHEDAQVWP MVAAGTSNDE
VMAARGVRPD FGDSEDD
//
