Hungarian National Research, Development and Innovation Office
2018-1.2.1-NKP-2018-00005
ハンガリー
European Union (EU)
RRF-2.3.1-21-2022-00015
European Union
Hungarian National Research, Development and Innovation Office
2020-1.1.6-JOVO-2021-00010
ハンガリー
引用
ジャーナル: Protein Sci / 年: 2025 タイトル: Ligand binding Pro-miscuity of acylpeptide hydrolase, structural analysis of a detoxifying serine hydrolase. 著者: Anna J Kiss-Szemán / Luca Takács / Imre Jákli / Zoltán Bánóczi / Naoki Hosogi / Daouda A K Traore / Veronika Harmat / András Perczel / Dóra K Menyhárd / 要旨: Acylpeptide hydrolase (APEH) or acylaminoacyl-peptidase (AAP) is a serine hydrolase that regulates protein metabolism. It can also bind to and process unusual substrates, acting as a detoxifier. To ...Acylpeptide hydrolase (APEH) or acylaminoacyl-peptidase (AAP) is a serine hydrolase that regulates protein metabolism. It can also bind to and process unusual substrates, acting as a detoxifier. To better understand its promiscuous specificity, we determined the cryo-EM structures of mammalian APEH complexed with classical serine protease partners: a chloromethyl-ketone (CMK) inhibitor, an organophosphate (OP) pesticide (dichlorvos), and benzenesulfonyl-fluoride. Since CMK derivatives of N-acetylated peptides were suggested to induce apoptosis by inhibiting APEH, while OP complexes may serve as biomarkers of OP exposure and are linked to cognitive enhancement, these complexes carry physiological significance. We identified a unique strand-breaker Pro residue in the hydrolase domain, which relaxes the active site into a partially inactivated but more spacious conformation, transforming the classical serine protease apparatus into a versatile yet potent hydrolysis center with broad specificity, distinguishing the mammalian enzyme not only from other APEHs but also from serine α/β hydrolases sharing essentially the same fold.
分子量: 131.173 Da / 分子数: 4 / 由来タイプ: 合成 / 式: C6H13NO2 / タイプ: SUBJECT OF INVESTIGATION
研究の焦点であるリガンドがあるか
Y
Has protein modification
N
-
実験情報
-
実験
実験
手法: 電子顕微鏡法
EM実験
試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法
-
試料調製
構成要素
名称: homotetramer of acylaminoacyl-peptidase (isolated from porcine liver) in covalent komplex with acetyl-alanyl-chloromethylketone タイプ: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1 / 由来: NATURAL
分子量
実験値: NO
由来(天然)
生物種: Sus scrofa domesticus (ブタ) / 器官: liver
緩衝液
pH: 7.5
緩衝液成分
濃度: 10 mM / 名称: TRIS / 式: TRIS
試料
濃度: 0.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES