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-Structure paper
| タイトル | α-Hydrazino Acids Inhibit Pyridoxal Phosphate-Dependent Decarboxylases via "Catalytically Correct" Ketoenamine Tautomers: A Special Motif for Chemical Biology and Drug Discovery? |
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| ジャーナル・号・ページ | ACS Catal, Vol. 15, Issue 10, Page 8204-8218, Year 2025 |
| 掲載日 | 2025年5月16日 |
著者 | Jonathan M Baine / Yoan Duhoo / Tzanko Doukov / Ambroise Desfosses / Giovanni Bisello / Matthew L Beio / Olivia Bauer / Massimiliano Perduca / Maria Bacia-Verloop / Mariarita Bertoldi / Robert S Phillips / Irina Gutsche / David B Berkowitz / ![]() |
| PubMed 要旨 | We present evidence that supports a 'correct hydrazone tautomer/Dunathan alignment model' for how α-hydrazino analogues of α-amino acids inhibit PLP enzymes. Described is the asymmetric synthesis ...We present evidence that supports a 'correct hydrazone tautomer/Dunathan alignment model' for how α-hydrazino analogues of α-amino acids inhibit PLP enzymes. Described is the asymmetric synthesis of l- and d-α-hydrazino acid l-lysine analogues and their inhibition of lysine decarboxylase (LdcI) via kinetic analysis, stopped-flow spectrophotometry, and cryo-EM. We describe a similar investigation of the important anti-Parkinsonism drug, carbidopa, with its human DOPA decarboxylase (hDdc) target. Evidence is consistent with these three hydrazino analogues forming the catalytically relevant ketoenamine PLP-hydrazone tautomer in their target active sites, with the α-carboxylate groups, though insulated, aligning with the PLP-π-system in a Dunathan-model-like orientation. High-resolution cryo-EM structures of the LdcI holoenzyme (pdb 9E0M-2.1Å) and LdcI-bound l- and d-hydrazones (pdb 9E0O-2.0 Å; pdb 9E0Q-2.3Å) and the first X-ray crystal structure of hDdc-bound carbidopa (pdb 9GNS-1.93Å) support this 'correct tautomer' model. These insights are expected to guide future PLP enzyme inhibitor development. |
リンク | ACS Catal / PubMed:40401103 / PubMed Central |
| 手法 | EM (単粒子) / X線回折 |
| 解像度 | 1.93 - 2.3 Å |
| 構造データ | EMDB-47362, PDB-9e0m: EMDB-47364, PDB-9e0o: EMDB-47366, PDB-9e0q: ![]() PDB-9dui: ![]() PDB-9gns: |
| 化合物 | ![]() PDB-1bcs: ![]() ChemComp-SO4: ![]() ChemComp-HOH: ![]() PDB-1bd1: ![]() PDB-1bd0: ![]() ChemComp-PLP: ![]() ChemComp-142: ![]() ChemComp-PG4: |
| 由来 |
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キーワード | LYASE / DOPA decarboxylase / carbiDOPA / Parkinson's disease / Vitamin B6 / L-lysine carboxylyase / pH homeostasis / cadaverine / pyridoxal-phosphate protein / L-Lysine decarboxylase / alpha-hydrazone inhibitor / D-alpha-hydrazone inhibitor / BIOSYNTHETIC PROTEIN / DDC / aromatic L-amino acid decarboxylase / AADC |
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hafnia alvei atcc 51873 (バクテリア)
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