ID C9RAW7_AMMDK Unreviewed; 164 AA.
AC C9RAW7;
DT 24-NOV-2009, integrated into UniProtKB/TrEMBL.
DT 24-NOV-2009, sequence version 1.
DT 27-MAR-2024, entry version 63.
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=Adeg_0224 {ECO:0000313|EMBL:ACX51394.1};
OS Ammonifex degensii (strain DSM 10501 / KC4).
OC Bacteria; Bacillota; Clostridia; Thermoanaerobacterales;
OC Thermoanaerobacteraceae; Ammonifex.
OX NCBI_TaxID=429009 {ECO:0000313|EMBL:ACX51394.1, ECO:0000313|Proteomes:UP000002620};
RN [1] {ECO:0000313|EMBL:ACX51394.1, ECO:0000313|Proteomes:UP000002620}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 10501 / KC4 {ECO:0000313|Proteomes:UP000002620};
RG US DOE Joint Genome Institute;
RA Kerfeld C., Goodner B., Huber H., Stetter K., Lucas S., Copeland A.,
RA Lapidus A., Glavina del Rio T., Dalin E., Tice H., Bruce D., Goodwin L.,
RA Pitluck S., Saunders E., Brettin T., Detter J.C., Han C., Larimer F.,
RA Land M., Hauser L., Kyrpides N., Ovchinnikova G., Richardson P.;
RT "Complete sequence of chromosome of Ammonifex degensii KC4.";
RL Submitted (OCT-2009) to the EMBL/GenBank/DDBJ databases.
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; CP001785; ACX51394.1; -; Genomic_DNA.
DR RefSeq; WP_015738272.1; NC_013385.1.
DR AlphaFoldDB; C9RAW7; -.
DR STRING; 429009.Adeg_0224; -.
DR KEGG; adg:Adeg_0224; -.
DR eggNOG; COG0440; Bacteria.
DR HOGENOM; CLU_055003_1_3_9; -.
DR OrthoDB; 9787365at2; -.
DR UniPathway; UPA00047; UER00055.
DR UniPathway; UPA00049; UER00059.
DR Proteomes; UP000002620; 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; PF13710; ACT_5; 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 Reference proteome {ECO:0000313|Proteomes:UP000002620};
KW Transferase {ECO:0000256|RuleBase:RU368092}.
FT DOMAIN 4..78
FT /note="ACT"
FT /evidence="ECO:0000259|PROSITE:PS51671"
SQ SEQUENCE 164 AA; 18322 MW; 79E52416E51B1D23 CRC64;
MRHTLSVLVE NHPGVLARVA NLFRRRGYNI ESLAVGSTED PAFSRMTIVV EGDDRVIEQV
TRQLDKLIEV IKVEDITKEE HVNRELALIK VQADPPRRGE VIQIVDIFRA HIVDVSPETL
IVEVTGDEGK VAAMIEALRP FGIKEMVRTG KLALLRGPRA LTAE
//
