5KD1

Sperm whale myoglobin H64A with nitrosoamphetamine

5KD1 の概要

• エントリーDOI: 10.2210/pdb5kd1/pdb
• 分子名称: Myoglobin, PROTOPORPHYRIN IX CONTAINING FE, SULFATE ION, ... (6 entities in total)
• 機能のキーワード: heme, myoglobin, nitrosoalkane, nitrosoamphetamine, 2-nitroso-1-phenylpropane, n-hydroxyamphetamine, c-nitroso, oxygen transport
• 由来する生物種: Physeter catodon (Sperm whale)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 18777.30

構造登録者

Wang, B.,Guan, Y.,Thomas, L.M.,Richter-Addo, G.B. (登録日: 2016-06-07, 公開日: 2017-05-10, 最終更新日: 2023-09-27)

主引用文献

Wang, B.,Powell, S.M.,Guan, Y.,Xu, N.,Thomas, L.M.,Richter-Addo, G.B.
Nitrosoamphetamine binding to myoglobin and hemoglobin: Crystal structure of the H64A myoglobin-nitrosoamphetamine adduct.
Nitric Oxide, 67:26-29, 2017

PubMed Abstract: N-hydroxyamphetamine (AmphNHOH) is an oxidative metabolite of amphetamine and methamphetamine. It is known to form inhibitory complexes upon binding to heme proteins. However, its interactions with myoglobin (Mb) and hemoglobin (Hb) have not been reported. We demonstrate that the reactions of AmphNHOH with ferric Mb and Hb generate the respective heme-nitrosoamphetamine derivatives characterized by UV-vis spectroscopy. We have determined the X-ray crystal structure of the H64A Mb-nitrosoamphetamine complex to 1.73 Å resolution. The structure reveals the N-binding of the nitroso-d-amphetamine isomer, with no significant H-bonding interactions between the ligand and the distal pocket amino acid residues.

PubMed: 28450187
DOI: 10.1016/j.niox.2017.04.012

実験手法

X-RAY DIFFRACTION (1.7 Å)