SitesBLAST
Comparing CA265_RS15850 CA265_RS15850 3-isopropylmalate dehydrogenase to proteins with known functional sites using BLASTp with E ≤ 0.001.
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Found 20 (the maximum) hits to proteins with known functional sites (download)
Q9SA14 3-isopropylmalate dehydrogenase 3, chloroplastic; 3-IPM-DH 3; AtIMDH2; AtIMDH3; IMDH 3; Beta-IPM dehydrogenase 3; Isopropylmalate dehydrogenase 3; AtIMD3; EC 1.1.1.85 from Arabidopsis thaliana (Mouse-ear cress) (see paper)
51% identity, 99% coverage: 2:360/363 of query aligns to 43:402/404 of Q9SA14
- L134 (= L94) Confers substrate specificity; mutation to F: Enhanced activity toward 3-(2'-methylthio)-ethylmalate, but reduced catalytic efficiency with 3-isopropylmalate.
P93832 3-isopropylmalate dehydrogenase 2, chloroplastic; 3-IPM-DH 2; AtIMDH2; AtIMDH3; IMDH 2; Beta-IPM dehydrogenase 2; Isopropylmalate dehydrogenase 2; AtIMD2; EC 1.1.1.85 from Arabidopsis thaliana (Mouse-ear cress) (see 2 papers)
50% identity, 100% coverage: 2:363/363 of query aligns to 42:404/405 of P93832
- 114:129 (vs. 74:90, 47% identical) binding
- L132 (= L93) mutation to A: Reduced activity toward 3-isopropylmalate.
- L133 (= L94) Confers substrate specificity; mutation to A: Reduced activity toward 3-isopropylmalate.; mutation to F: Enhanced activity toward 3-(2'-methylthio)-ethylmalate, but reduced catalytic efficiency with 3-isopropylmalate.
- R136 (= R97) binding ; mutation to A: Loss of activity toward 3-isopropylmalate.; mutation to K: Reduced activity toward 3-isopropylmalate.
- R146 (= R107) binding ; mutation to A: Reduced activity toward 3-isopropylmalate.; mutation to K: Reduced activity toward 3-isopropylmalate.
- R174 (= R135) binding ; mutation to A: Loss of activity toward 3-isopropylmalate.; mutation to K: Reduced activity toward 3-isopropylmalate.
- Y181 (= Y142) Important for catalysis; mutation Y->A,F,H: Reduced activity toward 3-isopropylmalate.
- K232 (= K189) Important for catalysis; mutation to M: Loss of activity toward 3-isopropylmalate.
- N234 (= N191) binding ; mutation N->A,D: Loss of activity toward 3-isopropylmalate.
- V235 (= V192) mutation to A: Reduced activity toward 3-isopropylmalate.
- D264 (= D221) binding ; binding ; mutation to N: Loss of activity toward 3-isopropylmalate.
- N265 (= N222) binding
- D288 (= D245) binding ; mutation to N: Loss of activity toward 3-isopropylmalate.
- D292 (= D249) binding ; mutation to N: Reduced activity toward 3-isopropylmalate.
- 318:334 (vs. 274:290, 82% identical) binding
5j33A Isopropylmalate dehydrogenase in complex with NAD+ (see paper)
51% identity, 97% coverage: 2:354/363 of query aligns to 2:355/360 of 5j33A
- active site: Y141 (= Y142), K192 (= K189), D224 (= D221), D248 (= D245), D252 (= D249)
- binding magnesium ion: D248 (= D245), D252 (= D249)
- binding nicotinamide-adenine-dinucleotide: I13 (= I13), A73 (= A73), I74 (= I74), G75 (= G75), E89 (= E90), L92 (= L93), N194 (= N191), Y222 (≠ F219), D224 (= D221), N225 (= N222), I261 (≠ M258), G262 (= G259), E278 (= E274), H281 (= H277), G282 (= G278), S283 (= S279), A284 (= A280), P285 (≠ H281), D286 (= D282), I287 (= I283), A293 (= A289), N294 (= N290), D335 (= D331)
5j32A Isopropylmalate dehydrogenase in complex with isopropylmalate (see paper)
51% identity, 97% coverage: 2:354/363 of query aligns to 12:365/369 of 5j32A
- active site: L18 (≠ I8), Y151 (= Y142), K202 (= K189), D234 (= D221), D258 (= D245), D262 (= D249)
- binding 3-isopropylmalic acid: R106 (= R97), R144 (= R135), Y151 (= Y142), K202 (= K189), D234 (= D221), D258 (= D245)
- binding magnesium ion: D258 (= D245), D262 (= D249)
1a05A Crystal structure of the complex of 3-isopropylmalate dehydrogenase from thiobacillus ferrooxidans with 3- isopropylmalate (see paper)
50% identity, 98% coverage: 3:359/363 of query aligns to 2:357/357 of 1a05A
Q56268 3-isopropylmalate dehydrogenase; 3-IPM-DH; Beta-IPM dehydrogenase; IMDH; EC 1.1.1.85 from Acidithiobacillus ferrooxidans (Thiobacillus ferrooxidans) (see paper)
50% identity, 98% coverage: 3:359/363 of query aligns to 2:357/358 of Q56268
- R95 (= R97) binding
- R105 (= R107) binding
- R133 (= R135) binding
- D222 (= D221) binding ; binding
- D246 (= D245) binding
Q9FMT1 3-isopropylmalate dehydrogenase 1, chloroplastic; 3-IPM-DH 1; AtIMDH1; IMDH 1; Beta-IPM dehydrogenase 1; Isopropylmalate dehydrogenase 1; AtIMD1; Methylthioalkylmalate dehydrogenase 1; EC 1.1.1.85 from Arabidopsis thaliana (Mouse-ear cress) (see 2 papers)
50% identity, 99% coverage: 2:360/363 of query aligns to 46:405/409 of Q9FMT1
- F137 (≠ L94) Confers substrate specificity; mutation to L: Reduced activity toward 3-(2'-methylthio)-ethylmalate, but enhanced catalytic efficiency with 3-isopropylmalate.
- C232 (= C185) Essential for redox regulation; mutation to S: Reduced sensitivity to oxidation on enzyme activity regulation.
- C390 (≠ T345) Essential for redox regulation; mutation to S: Reduced sensitivity to oxidation on enzyme activity regulation.
6xxyA Crystal structure of haemophilus influenzae 3-isopropylmalate dehydrogenase in complex with o-isobutenyl oxalylhydroxamate. (see paper)
51% identity, 97% coverage: 4:354/363 of query aligns to 5:356/358 of 6xxyA
- active site: Y144 (= Y142), K194 (= K189), D226 (= D221), D250 (= D245)
- binding magnesium ion: D250 (= D245), D254 (= D249)
- binding nicotinamide-adenine-dinucleotide: I14 (= I13), S74 (≠ A73), V75 (≠ I74), G76 (= G75), G77 (≠ H76), E90 (= E90), L94 (= L93), N196 (= N191), Y224 (≠ F219), N227 (= N222), M230 (= M225), M263 (= M258), G264 (= G259), E280 (= E274), G283 (≠ H277), G284 (= G278), S285 (= S279), A286 (= A280), P287 (≠ H281), D288 (= D282), I289 (= I283), A295 (= A289), N296 (= N290), D337 (= D331)
- binding 2-(2-methylprop-2-enoxyamino)-2-oxidanylidene-ethanoic acid: E90 (= E90), L94 (= L93), L95 (= L94), R98 (= R97), R108 (= R107), R137 (= R135), K194 (= K189), V197 (= V192), D226 (= D221), D250 (= D245), A282 (≠ I276)
4xxvA Crystal structure of 3-isopropylmalate dehydrogenase from burkholderia thailandensis in complex with NAD
50% identity, 97% coverage: 5:356/363 of query aligns to 4:356/356 of 4xxvA
4iwhA Crystal structure of a 3-isopropylmalate dehydrogenase from burkholderia pseudomallei
50% identity, 97% coverage: 5:356/363 of query aligns to 6:358/358 of 4iwhA
2y42D Structure of isopropylmalate dehydrogenase from thermus thermophilus - complex with nadh and mn (see paper)
50% identity, 89% coverage: 4:325/363 of query aligns to 3:322/355 of 2y42D
- active site: Y140 (= Y142), K186 (= K189), D218 (= D221), D242 (= D245), D246 (= D249)
- binding manganese (ii) ion: D242 (= D245), D246 (= D249)
- binding nicotinamide-adenine-dinucleotide: I12 (= I13), V73 (≠ I74), D79 (= D80), E88 (= E90), L255 (≠ M258), G256 (= G259), H274 (= H277), G275 (= G278), S276 (= S279), A277 (= A280), P278 (≠ H281), D279 (= D282), I280 (= I283), A286 (= A289), N287 (= N290)
Sites not aligning to the query:
2y41A Structure of isopropylmalate dehydrogenase from thermus thermophilus - complex with ipm and mn (see paper)
50% identity, 89% coverage: 4:325/363 of query aligns to 3:322/346 of 2y41A
- active site: Y140 (= Y142), K186 (= K189), D218 (= D221), D242 (= D245), D246 (= D249)
- binding 3-isopropylmalic acid: E88 (= E90), R95 (= R97), R105 (= R107), R133 (= R135), Y140 (= Y142), K186 (= K189), N188 (= N191), V189 (= V192), D218 (= D221), D242 (= D245)
- binding manganese (ii) ion: D242 (= D245), D246 (= D249)
2ztwA Structure of 3-isopropylmalate dehydrogenase in complex with the inhibitor and NAD+ (see paper)
50% identity, 89% coverage: 4:325/363 of query aligns to 2:321/345 of 2ztwA