3Q43

X-ray crystal structure of PfA-M1 bound to bestatin derivative 15

3Q43 の概要

• エントリーDOI: 10.2210/pdb3q43/pdb
• 関連するPDBエントリー: 3Q44
• 分子名称: M1 family aminopeptidase, ZINC ION, MAGNESIUM ION, ... (6 entities in total)
• 機能のキーワード: m1 aminopeptidase, hydrolase-hydrolase inhibitor complex, hydrolase/hydrolase inhibitor
• 由来する生物種: Plasmodium falciparum FcB1/Columbia
• 細胞内の位置: Cytoplasm: O96935
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 104743.28

構造登録者

McGowan, S.,Greenbaum, D.C. (登録日: 2010-12-22, 公開日: 2011-03-16, 最終更新日: 2023-09-13)

主引用文献

Velmourougane, G.,Harbut, M.B.,Dalal, S.,McGowan, S.,Oellig, C.A.,Meinhardt, N.,Whisstock, J.C.,Klemba, M.,Greenbaum, D.C.
Synthesis of new (-)-bestatin-based inhibitor libraries reveals a novel binding mode in the s1 pocket of the essential malaria m1 metalloaminopeptidase.
J.Med.Chem., 54:1655-1666, 2011

PubMed Abstract: The malarial PfA-M1 metallo-aminopeptidase is considered a putative drug target. The natural product dipeptide mimetic, bestatin, is a potent inhibitor of PfA-M1. Herein we present a new, efficient, and high-yielding protocol for the synthesis of bestatin derivatives from natural and unnatural N-Boc-d-amino acids. A diverse library of bestatin derivatives was synthesized with variants at the side chain of either the α-hydroxy-β-amino acid (P1) or the adjacent natural α-amino acid (P1'). Surprisingly, we found that extended aromatic side chains at the P1 position resulted in potent inhibition against PfA-M1. To understand these data, we determined the X-ray cocrystal structures of PfA-M1 with two derivatives having either a Tyr(OMe) 15 or Tyr(OBzl) 16 at the P1 position and observed substantial inhibitor-induced rearrangement of the primary loop within the PfA-M1 pocket that interacts with the P1 side chain. Our data provide important insights for the rational design of more potent and selective inhibitors of this enzyme that may eventually lead to new therapies for malaria.

PubMed: 21366301
DOI: 10.1021/jm101227t

実験手法

X-RAY DIFFRACTION (1.8 Å)