ID J7J048_DESMD Unreviewed; 159 AA.
AC J7J048;
DT 31-OCT-2012, integrated into UniProtKB/TrEMBL.
DT 31-OCT-2012, sequence version 1.
DT 27-MAR-2024, entry version 49.
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=Desmer_2796 {ECO:0000313|EMBL:AFQ44703.1};
OS Desulfosporosinus meridiei (strain ATCC BAA-275 / DSM 13257 / KCTC 12902 /
OS NCIMB 13706 / S10).
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Desulfitobacteriaceae;
OC Desulfosporosinus.
OX NCBI_TaxID=768704 {ECO:0000313|EMBL:AFQ44703.1, ECO:0000313|Proteomes:UP000005262};
RN [1] {ECO:0000313|EMBL:AFQ44703.1, ECO:0000313|Proteomes:UP000005262}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-275 / DSM 13257 / NCIMB 13706 / S10
RC {ECO:0000313|Proteomes:UP000005262};
RX PubMed=23105050; DOI=10.1128/JB.01392-12;
RA Pester M., Brambilla E., Alazard D., Rattei T., Weinmaier T., Han J.,
RA Lucas S., Lapidus A., Cheng J.F., Goodwin L., Pitluck S., Peters L.,
RA Ovchinnikova G., Teshima H., Detter J.C., Han C.S., Tapia R., Land M.L.,
RA Hauser L., Kyrpides N.C., Ivanova N.N., Pagani I., Huntmann M., Wei C.L.,
RA Davenport K.W., Daligault H., Chain P.S., Chen A., Mavromatis K.,
RA Markowitz V., Szeto E., Mikhailova N., Pati A., Wagner M., Woyke T.,
RA Ollivier B., Klenk H.P., Spring S., Loy A.;
RT "Complete genome sequences of Desulfosporosinus orientis DSM765T,
RT Desulfosporosinus youngiae DSM17734T, Desulfosporosinus meridiei DSM13257T,
RT and Desulfosporosinus acidiphilus DSM22704T.";
RL J. Bacteriol. 194:6300-6301(2012).
RN [2] {ECO:0000313|Proteomes:UP000005262}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-275 / DSM 13257 / NCIMB 13706 / S10
RC {ECO:0000313|Proteomes:UP000005262};
RA Huntemann M., Wei C.-L., Han J., Detter J.C., Han C., Davenport K.,
RA Daligault H., Erkkila T., Gu W., Munk A.C.C., Teshima H., Xu Y., Chain P.,
RA Tapia R., Chen A., Krypides N., Mavromatis K., Markowitz V., Szeto E.,
RA Ivanova N., Mikhailova N., Ovchinnikova G., Pagani I., Pati A., Goodwin L.,
RA Peters L., Pitluck S., Woyke T., Pester M., Spring S., Ollivier B.,
RA Rattei T., Klenk H.-P., Wagner M., Loy A.;
RT "Finished genome of Desulfosporosinus meridiei DSM 13257.";
RL Submitted (AUG-2012) 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; CP003629; AFQ44703.1; -; Genomic_DNA.
DR RefSeq; WP_014903616.1; NC_018515.1.
DR AlphaFoldDB; J7J048; -.
DR STRING; 768704.Desmer_2796; -.
DR KEGG; dmi:Desmer_2796; -.
DR eggNOG; COG0440; Bacteria.
DR HOGENOM; CLU_055003_1_3_9; -.
DR OrthoDB; 9787365at2; -.
DR UniPathway; UPA00047; UER00055.
DR UniPathway; UPA00049; UER00059.
DR Proteomes; UP000005262; 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 Transferase {ECO:0000256|RuleBase:RU368092, ECO:0000313|EMBL:AFQ44703.1}.
FT DOMAIN 4..78
FT /note="ACT"
FT /evidence="ECO:0000259|PROSITE:PS51671"
SQ SEQUENCE 159 AA; 17602 MW; AA11B16AF92DFFE6 CRC64;
MLHTLAVLVE NNPGVLIRVA GLFTRRGYNI DSLTVCQTED PELSRMTIVV NGDDQIIEQV
RNQLSKLVVV HSVSDYTGEC VVDRELALIR VQVSSETRSA VLQTVDIFRG RVVDMGRTNL
TVELTGDIPK IDAFVHAIQP YGLMELVRTG KVAILRSEA
//
