ID M1IZ60_9CREN Unreviewed; 572 AA.
AC M1IZ60;
DT 01-MAY-2013, integrated into UniProtKB/TrEMBL.
DT 01-MAY-2013, sequence version 1.
DT 27-MAR-2024, entry version 59.
DE RecName: Full=Acetolactate synthase {ECO:0000256|RuleBase:RU003591};
DE EC=2.2.1.6 {ECO:0000256|RuleBase:RU003591};
GN ORFNames=SacRon12I_07580 {ECO:0000313|EMBL:AGE73747.1};
OS Sulfolobus acidocaldarius Ron12/I.
OC Archaea; Thermoproteota; Thermoprotei; Sulfolobales; Sulfolobaceae;
OC Sulfolobus.
OX NCBI_TaxID=1028567 {ECO:0000313|Proteomes:UP000011280};
RN [1] {ECO:0000313|EMBL:AGE73747.1, ECO:0000313|Proteomes:UP000011280}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Ron12/I {ECO:0000313|EMBL:AGE73747.1,
RC ECO:0000313|Proteomes:UP000011280};
RX PubMed=22418622; DOI=10.1038/ismej.2012.20;
RA Mao D., Grogan D.;
RT "Genomic evidence of rapid, global-scale gene flow in a Sulfolobus
RT species.";
RL ISME J. 6:1613-1616(2012).
CC -!- FUNCTION: Catalyzes the coenzyme A-dependent oxidative decarboxylation
CC of different 2-oxoacids such as 2-oxoglutarate, pyruvate and 2-
CC oxobutyrate to form their CoA derivatives.
CC {ECO:0000256|ARBA:ARBA00003908}.
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 -!- CATALYTIC ACTIVITY:
CC Reaction=a 2-oxocarboxylate + CoA + 2 oxidized [2Fe-2S]-[ferredoxin] =
CC an acyl-CoA + CO2 + H(+) + 2 reduced [2Fe-2S]-[ferredoxin];
CC Xref=Rhea:RHEA:42316, Rhea:RHEA-COMP:10000, Rhea:RHEA-COMP:10001,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:16526, ChEBI:CHEBI:33737,
CC ChEBI:CHEBI:33738, ChEBI:CHEBI:35179, ChEBI:CHEBI:57287,
CC ChEBI:CHEBI:58342; EC=1.2.7.11;
CC Evidence={ECO:0000256|ARBA:ARBA00000005};
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 -!- SUBUNIT: Heterodimer composed of an alpha and a beta subunit.
CC {ECO:0000256|ARBA:ARBA00011631}.
CC -!- SIMILARITY: Belongs to the TPP enzyme family.
CC {ECO:0000256|ARBA:ARBA00007812, ECO:0000256|RuleBase:RU003591}.
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DR EMBL; CP002818; AGE73747.1; -; Genomic_DNA.
DR RefSeq; WP_011278376.1; NC_020247.1.
DR AlphaFoldDB; M1IZ60; -.
DR GeneID; 78441904; -.
DR KEGG; sacr:SacRon12I_07580; -.
DR PATRIC; fig|1028567.7.peg.1492; -.
DR HOGENOM; CLU_013748_1_2_2; -.
DR UniPathway; UPA00047; UER00055.
DR UniPathway; UPA00049; UER00059.
DR Proteomes; UP000011280; Chromosome.
DR GO; GO:0018491; F:2-oxobutyrate synthase activity; IEA:UniProt.
DR GO; GO:0047553; F:2-oxoglutarate synthase activity; IEA:UniProt.
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:0019164; F:pyruvate synthase activity; IEA:UniProt.
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, ECO:0000313|EMBL:AGE73747.1}.
FT DOMAIN 3..120
FT /note="Thiamine pyrophosphate enzyme N-terminal TPP-
FT binding"
FT /evidence="ECO:0000259|Pfam:PF02776"
FT DOMAIN 197..333
FT /note="Thiamine pyrophosphate enzyme central"
FT /evidence="ECO:0000259|Pfam:PF00205"
FT DOMAIN 394..541
FT /note="Thiamine pyrophosphate enzyme TPP-binding"
FT /evidence="ECO:0000259|Pfam:PF02775"
SQ SEQUENCE 572 AA; 63161 MW; B046D1190FE5387C CRC64;
MPSGARIVVD SLKREGVKVI FGIPGLSNMP IYDAFLEDLK NGELRHVLMR HEQAAAHAAD
AYARVSGFPG VCTATSGPGV TNLVTGLISA YWDSSPVVAI AGQVVRPSIG KMAFQEADTI
GIFEHITKYV IEVKKIEELP QMIKNAFYIA GTGRPGPVVV DIPRDILNEK MEDVKWPEKP
IVPGYREFPT IIDRQKIKKA AELLINAERP IILAGTGATW SNATEEILEL AELLHTPIIS
TFPGKSAIPH DHPLYFGPMG YYGRAEASMA ALESDVMLVV GARLSDRTIT SYDEMKETKK
KFIMVNVDPT DGERGLKVDI NLVGNAKTLL RELIKAVVEV GKKNDKSEWV KRIKEYQEYY
SQFYYIEENN KLKPWKILKI IRNSIPRNSI VTTGVGQHQM WAEVFWDVLE PRTFLSSTGM
GTMGFGLPAA IGAKLAKPDR VVVDLDGDGS FLMTATNLAT AVDENIPIIS VIFDNRTLGL
VRQVQDLFFG RRIVGVDYGP SPDFVKLAES FGALGFNATT YEELEKSIKI AIKENIPSVI
RLPIDKEELA LPTLPPGGKL KQVIVRDPRK GS
//
