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Database: UniProt
Entry: Q3SQ44_NITWN
LinkDB: Q3SQ44_NITWN
Original site: Q3SQ44_NITWN 
ID   Q3SQ44_NITWN            Unreviewed;       592 AA.
AC   Q3SQ44;
DT   11-OCT-2005, integrated into UniProtKB/TrEMBL.
DT   11-OCT-2005, sequence version 1.
DT   24-JAN-2024, entry version 121.
DE   RecName: Full=Acetolactate synthase {ECO:0000256|ARBA:ARBA00013145, ECO:0000256|RuleBase:RU003591};
DE            EC=2.2.1.6 {ECO:0000256|ARBA:ARBA00013145, ECO:0000256|RuleBase:RU003591};
GN   OrderedLocusNames=Nwi_2343 {ECO:0000313|EMBL:ABA05597.1};
OS   Nitrobacter winogradskyi (strain ATCC 25391 / DSM 10237 / CIP 104748 /
OS   NCIMB 11846 / Nb-255).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomicrobiales;
OC   Nitrobacteraceae; Nitrobacter.
OX   NCBI_TaxID=323098 {ECO:0000313|EMBL:ABA05597.1, ECO:0000313|Proteomes:UP000002531};
RN   [1] {ECO:0000313|EMBL:ABA05597.1, ECO:0000313|Proteomes:UP000002531}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 25391 / DSM 10237 / CIP 104748 / NCIMB 11846 / Nb-255
RC   {ECO:0000313|Proteomes:UP000002531};
RX   PubMed=16517654; DOI=10.1128/AEM.72.3.2050-2063.2006;
RA   Starkenburg S.R., Chain P.S., Sayavedra-Soto L.A., Hauser L., Land M.L.,
RA   Larimer F.W., Malfatti S.A., Klotz M.G., Bottomley P.J., Arp D.J.,
RA   Hickey W.J.;
RT   "Genome sequence of the chemolithoautotrophic nitrite-oxidizing bacterium
RT   Nitrobacter winogradskyi Nb-255.";
RL   Appl. Environ. Microbiol. 72:2050-2063(2006).
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:RU003591};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000256|RuleBase:RU003591};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000256|RuleBase:RU003591};
CC   -!- COFACTOR:
CC       Name=thiamine diphosphate; Xref=ChEBI:CHEBI:58937;
CC         Evidence={ECO:0000256|RuleBase:RU003591};
CC       Note=Binds 1 thiamine pyrophosphate per subunit.
CC       {ECO:0000256|RuleBase:RU003591};
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:RU003591}.
CC   -!- PATHWAY: Amino-acid biosynthesis; L-valine biosynthesis; L-valine from
CC       pyruvate: step 1/4. {ECO:0000256|ARBA:ARBA00005025,
CC       ECO:0000256|RuleBase:RU003591}.
CC   -!- SIMILARITY: Belongs to the TPP enzyme family.
CC       {ECO:0000256|ARBA:ARBA00007812, ECO:0000256|RuleBase:RU003591}.
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DR   EMBL; CP000115; ABA05597.1; -; Genomic_DNA.
DR   RefSeq; WP_011315561.1; NC_007406.1.
DR   AlphaFoldDB; Q3SQ44; -.
DR   STRING; 323098.Nwi_2343; -.
DR   KEGG; nwi:Nwi_2343; -.
DR   eggNOG; COG0028; Bacteria.
DR   HOGENOM; CLU_013748_1_2_5; -.
DR   OMA; CFGTSGP; -.
DR   OrthoDB; 4494979at2; -.
DR   UniPathway; UPA00047; UER00055.
DR   UniPathway; UPA00049; UER00059.
DR   Proteomes; UP000002531; Chromosome.
DR   GO; GO:0003984; F:acetolactate synthase activity; IEA:UniProtKB-EC.
DR   GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:InterPro.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0030976; F:thiamine pyrophosphate binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0009097; P:isoleucine biosynthetic process; IEA:UniProtKB-UniPathway.
DR   GO; GO:0009099; P:valine biosynthetic process; IEA:UniProtKB-UniPathway.
DR   CDD; cd02015; TPP_AHAS; 1.
DR   CDD; cd07035; TPP_PYR_POX_like; 1.
DR   Gene3D; 3.40.50.970; -; 2.
DR   Gene3D; 3.40.50.1220; TPP-binding domain; 1.
DR   InterPro; IPR012846; Acetolactate_synth_lsu.
DR   InterPro; IPR039368; AHAS_TPP.
DR   InterPro; IPR029035; DHS-like_NAD/FAD-binding_dom.
DR   InterPro; IPR029061; THDP-binding.
DR   InterPro; IPR012000; Thiamin_PyroP_enz_cen_dom.
DR   InterPro; IPR012001; Thiamin_PyroP_enz_TPP-bd_dom.
DR   InterPro; IPR045229; TPP_enz.
DR   InterPro; IPR011766; TPP_enzyme_TPP-bd.
DR   NCBIfam; TIGR00118; acolac_lg; 1.
DR   PANTHER; PTHR18968:SF13; ACETOLACTATE SYNTHASE, CHLOROPLASTIC; 1.
DR   PANTHER; PTHR18968; THIAMINE PYROPHOSPHATE ENZYMES; 1.
DR   Pfam; PF02775; TPP_enzyme_C; 1.
DR   Pfam; PF00205; TPP_enzyme_M; 1.
DR   Pfam; PF02776; TPP_enzyme_N; 1.
DR   SUPFAM; SSF52467; DHS-like NAD/FAD-binding domain; 1.
DR   SUPFAM; SSF52518; Thiamin diphosphate-binding fold (THDP-binding); 2.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605,
KW   ECO:0000256|RuleBase:RU003591};
KW   Branched-chain amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023304,
KW   ECO:0000256|RuleBase:RU003591}; FAD {ECO:0000256|ARBA:ARBA00022827};
KW   Flavoprotein {ECO:0000256|ARBA:ARBA00022630};
KW   Magnesium {ECO:0000256|RuleBase:RU003591};
KW   Metal-binding {ECO:0000256|RuleBase:RU003591};
KW   Reference proteome {ECO:0000313|Proteomes:UP000002531};
KW   Thiamine pyrophosphate {ECO:0000256|RuleBase:RU003591};
KW   Transferase {ECO:0000256|RuleBase:RU003591, ECO:0000313|EMBL:ABA05597.1}.
FT   DOMAIN          12..128
FT                   /note="Thiamine pyrophosphate enzyme N-terminal TPP-
FT                   binding"
FT                   /evidence="ECO:0000259|Pfam:PF02776"
FT   DOMAIN          203..340
FT                   /note="Thiamine pyrophosphate enzyme central"
FT                   /evidence="ECO:0000259|Pfam:PF00205"
FT   DOMAIN          402..549
FT                   /note="Thiamine pyrophosphate enzyme TPP-binding"
FT                   /evidence="ECO:0000259|Pfam:PF02775"
SQ   SEQUENCE   592 AA;  64208 MW;  EB2969E2AC747412 CRC64;
     MSQNKHQDSN QMTGAAMIVR ALVDHGVKHI FGYPGGAVLP IYDEIFQQRD IEHVLVRHEQ
     GAGHAAEGYA RSTGKPGVAL VTSGPGATNM VTPLADALMD SIPLVCITGQ VPTHLIGNDA
     FQECDTVGIT RPCTKHNWLV RDIKDLPKVL HEAFYVATSG RPGPVVVDVP KDLQFATGTY
     TPPRKSDVHA SYKPQIKGDA GQIRKAVALL LNAKRPVIYT GGGIINSGRE ASKTLRALVE
     ATGFPITSTL MGLGAYPASG KNWLGMLGMH GTYEANMAMH DCDVMLCIGA RFDDRITGRT
     DAFSPGSKKI HIDIDPSSIN KNIRVDVPII GDAGSVMADL LQAFKAEGKT PRIDPWWFEI
     GRWRARNSLA YKKNDDVILP QFAIQRLFEA TRGRDTYITT EVGQHQMWAA QFFGFDEPHR
     LMTSGGLGTM GYGLPAALGV QVAHRDSLVI DIAGDASVQM TMQEMSTAVQ HDLPIKIFIL
     NNQYMGMVRQ WQQLLHGNRL SHSYSEALPD FVKLADAFGC VGLQATRPSD LDGAIAEMIS
     VKKPVLFDCR VAALENCFPM IPSGKAHNEM LLPAEANDDV TAAAFAGGKA LV
//
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