ID F7XQ34_METZD Unreviewed; 161 AA.
AC F7XQ34;
DT 21-SEP-2011, integrated into UniProtKB/TrEMBL.
DT 21-SEP-2011, sequence version 1.
DT 27-MAR-2024, entry version 57.
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=Mzhil_0525 {ECO:0000313|EMBL:AEH60395.1};
OS Methanosalsum zhilinae (strain DSM 4017 / NBRC 107636 / OCM 62 / WeN5)
OS (Methanohalophilus zhilinae).
OC Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC Methanosarcinales; Methanosarcinaceae; Methanosalsum.
OX NCBI_TaxID=679901 {ECO:0000313|EMBL:AEH60395.1, ECO:0000313|Proteomes:UP000006622};
RN [1] {ECO:0000313|EMBL:AEH60395.1, ECO:0000313|Proteomes:UP000006622}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 4017 / NBRC 107636 / OCM 62 / WeN5
RC {ECO:0000313|Proteomes:UP000006622};
RG US DOE Joint Genome Institute (JGI-PGF);
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Kyrpides N., Mavromatis K.,
RA Ovchinnikova G., Daligault H., Detter J.C., Han C., Tapia R., Larimer F.,
RA Land M., Hauser L., Markowitz V., Cheng J.-F., Hugenholtz P., Woyke T.,
RA Wu D., Spring S., Schueler E., Brambilla E., Klenk H.-P., Eisen J.A.;
RT "The complete genome of Methanosalsum zhilinae DSM 4017.";
RL Submitted (JUL-2010) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:AEH60395.1, ECO:0000313|Proteomes:UP000006622}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 4017 / NBRC 107636 / OCM 62 / WeN5
RC {ECO:0000313|Proteomes:UP000006622};
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Kyrpides N., Mavromatis K.,
RA Ovchinnikova G., Daligault H., Detter J.C., Han C., Tapia R., Larimer F.,
RA Land M., Hauser L., Markowitz V., Cheng J.-F., Hugenholtz P., Woyke T.,
RA Wu D., Spring S., Schueler E., Brambilla E., Klenk H.-P., Eisen J.A.;
RT "The complete genome of Methanosalsum zhilinae DSM 4017.";
RL Submitted (JUL-2010) 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|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|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; CP002101; AEH60395.1; -; Genomic_DNA.
DR RefSeq; WP_013897834.1; NC_015676.1.
DR AlphaFoldDB; F7XQ34; -.
DR STRING; 679901.Mzhil_0525; -.
DR GeneID; 10822134; -.
DR KEGG; mzh:Mzhil_0525; -.
DR HOGENOM; CLU_055003_1_3_2; -.
DR OrthoDB; 85792at2157; -.
DR UniPathway; UPA00047; UER00055.
DR UniPathway; UPA00049; UER00059.
DR Proteomes; UP000006622; 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 Reference proteome {ECO:0000313|Proteomes:UP000006622};
KW Transferase {ECO:0000256|RuleBase:RU368092}.
FT DOMAIN 4..78
FT /note="ACT"
FT /evidence="ECO:0000259|PROSITE:PS51671"
SQ SEQUENCE 161 AA; 17726 MW; C4C3D0A8D420FB3C CRC64;
MKHTLAVLVE NKHGVLTRVA GLFSRRGYNI DSLAVGITED PSISRMTIVV RGDDQVLEQV
VKQLNKLIDV IRVTDIESGE SVGRELALIK VAADVNSRSE IIQIVDIFRA RIVDVSAKSL
IIEVTGDEEK IKAIEKLLRP FGIKELARTG KIALTRGSKK V
//
