ID D3EER5_GEOS4 Unreviewed; 161 AA.
AC D3EER5;
DT 23-MAR-2010, integrated into UniProtKB/TrEMBL.
DT 23-MAR-2010, sequence version 1.
DT 27-MAR-2024, entry version 70.
DE RecName: Full=Acetolactate synthase small subunit {ECO:0000256|RuleBase:RU368092};
DE Short=AHAS {ECO:0000256|RuleBase:RU368092};
DE Short=ALS {ECO:0000256|RuleBase:RU368092};
DE EC=2.2.1.6 {ECO:0000256|RuleBase:RU368092};
DE AltName: Full=Acetohydroxy-acid synthase small subunit {ECO:0000256|RuleBase:RU368092};
GN OrderedLocusNames=GYMC10_5141 {ECO:0000313|EMBL:ACX67352.1};
OS Geobacillus sp. (strain Y412MC10).
OC Bacteria; Bacillota; Bacilli; Bacillales; Paenibacillaceae; Paenibacillus.
OX NCBI_TaxID=481743 {ECO:0000313|EMBL:ACX67352.1, ECO:0000313|Proteomes:UP000002381};
RN [1] {ECO:0000313|Proteomes:UP000002381}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Y412MC10 {ECO:0000313|Proteomes:UP000002381};
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Saunders E., Brettin T., Detter J.C.,
RA Han C., Larimer F., Land M., Hauser L., Kyrpides N., Ovchinnikova G.,
RA Brumm P., Mead D.;
RT "Complete sequence of Geobacillus sp. Y412MC10.";
RL Submitted (OCT-2009) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:ACX67352.1, ECO:0000313|Proteomes:UP000002381}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Y412MC10 {ECO:0000313|EMBL:ACX67352.1,
RC ECO:0000313|Proteomes:UP000002381};
RX PubMed=23408395; DOI=10.4056/sigs.2605792;
RA Mead D.A., Lucas S., Copeland A., Lapidus A., Cheng J.F., Bruce D.C.,
RA Goodwin L.A., Pitluck S., Chertkov O., Zhang X., Detter J.C., Han C.S.,
RA Tapia R., Land M., Hauser L.J., Chang Y.J., Kyrpides N.C., Ivanova N.N.,
RA Ovchinnikova G., Woyke T., Brumm C., Hochstein R., Schoenfeld T., Brumm P.;
RT "Complete Genome Sequence of Paenibacillus strain Y4.12MC10, a Novel
RT Paenibacillus lautus strain Isolated from Obsidian Hot Spring in
RT Yellowstone National Park.";
RL Stand. Genomic Sci. 6:381-400(2012).
CC -!- FUNCTION: Catalyzes the conversion of 2 pyruvate molecules into
CC acetolactate in the first common step of the biosynthetic pathway of
CC the branched-amino acids such as leucine, isoleucine, and valine.
CC {ECO:0000256|RuleBase:RU368092}.
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|ARBA:ARBA00000673,
CC ECO:0000256|RuleBase:RU368092};
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:RU368092}.
CC -!- PATHWAY: Amino-acid biosynthesis; L-valine biosynthesis; L-valine from
CC pyruvate: step 1/4. {ECO:0000256|ARBA:ARBA00005025,
CC ECO:0000256|RuleBase:RU368092}.
CC -!- SUBUNIT: Dimer of large and small chains.
CC {ECO:0000256|ARBA:ARBA00011744, ECO:0000256|RuleBase:RU368092}.
CC -!- SIMILARITY: Belongs to the acetolactate synthase small subunit family.
CC {ECO:0000256|ARBA:ARBA00006341, ECO:0000256|RuleBase:RU368092}.
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DR EMBL; CP001793; ACX67352.1; -; Genomic_DNA.
DR RefSeq; WP_009589349.1; NZ_VEAV01000006.1.
DR AlphaFoldDB; D3EER5; -.
DR STRING; 481743.GYMC10_5141; -.
DR KEGG; gym:GYMC10_5141; -.
DR HOGENOM; CLU_055003_1_3_9; -.
DR UniPathway; UPA00047; UER00055.
DR UniPathway; UPA00049; UER00059.
DR Proteomes; UP000002381; Chromosome.
DR GO; GO:0003984; F:acetolactate synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:1990610; F:acetolactate synthase regulator activity; IEA:UniProtKB-UniRule.
DR GO; GO:0009097; P:isoleucine biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0009099; P:valine biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd04878; ACT_AHAS; 1.
DR Gene3D; 3.30.70.260; -; 1.
DR Gene3D; 3.30.70.1150; ACT-like. Chain A, domain 2; 1.
DR InterPro; IPR004789; Acetalactate_synth_ssu.
DR InterPro; IPR027271; Acetolactate_synth/TF_NikR_C.
DR InterPro; IPR019455; Acetolactate_synth_ssu_C.
DR InterPro; IPR045865; ACT-like_dom_sf.
DR InterPro; IPR002912; ACT_dom.
DR InterPro; IPR039557; AHAS_ACT.
DR NCBIfam; TIGR00119; acolac_sm; 1.
DR PANTHER; PTHR30239; ACETOLACTATE SYNTHASE SMALL SUBUNIT; 1.
DR PANTHER; PTHR30239:SF0; ACETOLACTATE SYNTHASE SMALL SUBUNIT 1, CHLOROPLASTIC; 1.
DR Pfam; PF01842; ACT; 1.
DR Pfam; PF10369; ALS_ss_C; 1.
DR SUPFAM; SSF55021; ACT-like; 2.
DR PROSITE; PS51671; ACT; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605,
KW ECO:0000256|RuleBase:RU368092};
KW Branched-chain amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023304,
KW ECO:0000256|RuleBase:RU368092};
KW Transferase {ECO:0000256|RuleBase:RU368092}.
FT DOMAIN 6..80
FT /note="ACT"
FT /evidence="ECO:0000259|PROSITE:PS51671"
SQ SEQUENCE 161 AA; 17524 MW; 6242B6E91DDDB942 CRC64;
MSTKHTIAVL VNDQPGVLQR VSGLFGRRGF NIESITVGQS EEIGLSRMVI VTTGDETTLE
QVEKQLYKLI DVIKVINLSS KPMVARELAL IKVKAEPSAR PEIMGVVETF RASVVDIGTT
NLMVQVVGDT VKIDAMIELL KPYGIQELSR TGVTAMIRGN A
//
