ID V9H7V4_9NEIS Unreviewed; 163 AA.
AC V9H7V4;
DT 19-FEB-2014, integrated into UniProtKB/TrEMBL.
DT 19-FEB-2014, sequence version 1.
DT 27-MAR-2024, entry version 45.
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 ORFNames=HMPREF9021_01711 {ECO:0000313|EMBL:EFG30424.1};
OS Simonsiella muelleri ATCC 29453.
OC Bacteria; Pseudomonadota; Betaproteobacteria; Neisseriales; Neisseriaceae;
OC Simonsiella.
OX NCBI_TaxID=641147 {ECO:0000313|EMBL:EFG30424.1, ECO:0000313|Proteomes:UP000017813};
RN [1] {ECO:0000313|EMBL:EFG30424.1, ECO:0000313|Proteomes:UP000017813}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29453 {ECO:0000313|EMBL:EFG30424.1,
RC ECO:0000313|Proteomes:UP000017813};
RG The Broad Institute Genome Sequencing Platform;
RA Ward D., Earl A., Feldgarden M., Gevers D., Young S., Zeng Q., Koehrsen M.,
RA Alvarado L., Berlin A.M., Borenstein D., Chapman S.B., Chen Z., Engels R.,
RA Freedman E., Gellesch M., Goldberg J., Griggs A., Gujja S., Heilman E.R.,
RA Heiman D.I., Hepburn T.A., Howarth C., Jen D., Larson L., Mehta T.,
RA Park D., Pearson M., Richards J., Roberts A., Saif S., Shea T.D.,
RA Shenoy N., Sisk P., Stolte C., Sykes S.N., Walk T., White J., Yandava C.,
RA Izard J., Baranova O.V., Blanton J.M., Tanner A.C., Dewhirst F., Haas B.,
RA Nusbaum C., Birren B.;
RL Submitted (MAR-2010) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:EFG30424.1, ECO:0000313|Proteomes:UP000017813}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29453 {ECO:0000313|EMBL:EFG30424.1,
RC ECO:0000313|Proteomes:UP000017813};
RG The Broad Institute Genome Sequencing Platform;
RG The Broad Institute Genome Sequencing Center for Infectious Disease;
RA Earl A., Ward D., Feldgarden M., Gevers D., Izard J., Baranova O.V.,
RA Blanton J.M., Tanner A.C., Dewhirst F., Young S.K., Zeng Q., Gargeya S.,
RA Fitzgerald M., Haas B., Abouelleil A., Alvarado L., Arachchi H.M.,
RA Berlin A., Brown A., Chapman S.B., Chen Z., Dunbar C., Freedman E.,
RA Gearin G., Goldberg J., Griggs A., Gujja S., Heiman D., Howarth C.,
RA Larson L., Lui A., MacDonald P.J.P., Montmayeur A., Murphy C., Neiman D.,
RA Pearson M., Priest M., Roberts A., Saif S., Shea T., Shenoy N., Sisk P.,
RA Stolte C., Sykes S., Wortman J., Nusbaum C., Birren B.;
RT "The Genome Sequence of Simonsiella muelleri ATCC 29453.";
RL Submitted (OCT-2011) 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}.
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:EFG30424.1}.
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DR EMBL; ADCY02000035; EFG30424.1; -; Genomic_DNA.
DR RefSeq; WP_002642119.1; NZ_JH815304.1.
DR AlphaFoldDB; V9H7V4; -.
DR STRING; 641147.HMPREF9021_01711; -.
DR KEGG; smur:BWP33_08045; -.
DR eggNOG; COG0440; Bacteria.
DR HOGENOM; CLU_055003_1_3_4; -.
DR OrthoDB; 9787365at2; -.
DR UniPathway; UPA00047; UER00055.
DR UniPathway; UPA00049; UER00059.
DR Proteomes; UP000017813; Unassembled WGS sequence.
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:UP000017813};
KW Transferase {ECO:0000256|RuleBase:RU368092}.
FT DOMAIN 4..78
FT /note="ACT"
FT /evidence="ECO:0000259|PROSITE:PS51671"
SQ SEQUENCE 163 AA; 18186 MW; 8AFEDB7971C9134A CRC64;
MRHILSILME NESGAMSRVV GLFSARDYNI DSLSVAPTED ATLSRMTIVT RGDSQVIEQI
TKQLNKLVEV IKVVDLNDSR YAERELMLVK IRAVGKDRDE VLRLADIYRG NVIDVSDKTY
TVEVTGTSEK LDSFLENLSK SLILETVRTG AAGIGRGERV LRI
//