ID C0BBD5_9FIRM Unreviewed; 522 AA.
AC C0BBD5;
DT 05-MAY-2009, integrated into UniProtKB/TrEMBL.
DT 05-MAY-2009, sequence version 1.
DT 27-MAR-2024, entry version 80.
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 Name=ilvB {ECO:0000313|EMBL:EEG89409.1};
GN ORFNames=COPCOM_02391 {ECO:0000313|EMBL:EEG89409.1};
OS Coprococcus comes ATCC 27758.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Lachnospiraceae;
OC Coprococcus.
OX NCBI_TaxID=470146 {ECO:0000313|EMBL:EEG89409.1, ECO:0000313|Proteomes:UP000003793};
RN [1] {ECO:0000313|EMBL:EEG89409.1, ECO:0000313|Proteomes:UP000003793}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 27758 {ECO:0000313|EMBL:EEG89409.1,
RC ECO:0000313|Proteomes:UP000003793};
RA Fulton L., Clifton S., Fulton B., Xu J., Minx P., Pepin K.H., Johnson M.,
RA Bhonagiri V., Nash W.E., Mardis E.R., Wilson R.K.;
RL Submitted (FEB-2009) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:EEG89409.1, ECO:0000313|Proteomes:UP000003793}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 27758 {ECO:0000313|EMBL:EEG89409.1,
RC ECO:0000313|Proteomes:UP000003793};
RA Sudarsanam P., Ley R., Guruge J., Turnbaugh P.J., Mahowald M., Liep D.,
RA Gordon J.;
RT "Draft genome sequence of Coprococcus comes (ATCC 27758).";
RL Submitted (MAR-2009) to the EMBL/GenBank/DDBJ databases.
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:EEG89409.1}.
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DR EMBL; ABVR01000041; EEG89409.1; -; Genomic_DNA.
DR AlphaFoldDB; C0BBD5; -.
DR HOGENOM; CLU_013748_1_2_9; -.
DR UniPathway; UPA00047; UER00055.
DR UniPathway; UPA00049; UER00059.
DR Proteomes; UP000003793; 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, ECO:0000313|EMBL:EEG89409.1}.
FT DOMAIN 24..140
FT /note="Thiamine pyrophosphate enzyme N-terminal TPP-
FT binding"
FT /evidence="ECO:0000259|Pfam:PF02776"
FT DOMAIN 212..346
FT /note="Thiamine pyrophosphate enzyme central"
FT /evidence="ECO:0000259|Pfam:PF00205"
FT DOMAIN 402..520
FT /note="Thiamine pyrophosphate enzyme TPP-binding"
FT /evidence="ECO:0000259|Pfam:PF02775"
SQ SEQUENCE 522 AA; 57202 MW; 1ABC76347FE8BF2A CRC64;
MEQFWKFHTN KIKSGQGECT MQLNGAEILI ECLKEQGVDT VFGYPGGAIL NVYDELYKHS
NEIRHILTSH EQGASHAADG YARATGKVGV CFATSGPGAT NLVTGIATAF MDSIPIVAIT
CNVGVPLLGK DSFQEIDITG ITMPITKYNF IVKNVNDLAK TIRKAFEIAQ SGRPGPVLID
IPKDVTGNKA EYEPVKIQPI VKYKKEICME DIDKAVEMIE EAKRPFVFVG GGAILSDASE
ELRAFVDKVQ CPVCDSLMGK GAFPGTDELY TGMLGMHGTK TSNFGVSESD LLIVVGARFS
DRVTGNPNKF ASNAKILQFD IDVAEMNKNV IIDEGVVGDI KEVLAAVNEK LPQQEHTEWI
KKIQEYKAKY PLAYHPESLT GPYVIEEIYK QTEGDAIIVT EVGQHQMWAA QYYKFTKPRT
LLTSGGLGTM GYGLGAAIGA KMGRPEKTVV NIAGDGCFRM NMNEVATAAR YNIPIIQVVV
NNHVLGMVRQ WQNLFYGQRY SATVLNDAVD FVKLAEAMGR KR
//