2P5H

sPLA2 inhibitor 9

2P5H の概要

• エントリーDOI: 10.2210/pdb2p5h/pdb
• 関連するPDBエントリー: 2P5J 2P60
• NMR情報: BMRB: 7389
• 分子名称: pip9 (1 entity in total)
• 機能のキーワード: spla2, inhibitor, hydrolase inhibitor
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 1040.15

構造登録者

Thwin, M.M.,Satyanarayanajois, D.S.,Nagarajarao, L.M.,Sato, K.,Gopalakrishnakone, P.P.,Arjunan, P. (登録日: 2007-03-15, 公開日: 2007-11-13, 最終更新日: 2024-05-22)

主引用文献

Thwin, M.M.,Satyanarayanajois, S.D.,Nagarajarao, L.M.,Sato, K.,Arjunan, P.,Ramapatna, S.L.,Kumar, P.V.,Gopalakrishnakone, P.
Novel Peptide Inhibitors of Human Secretory Phospholipase A2 with Antiinflammatory Activity: Solution Structure and Molecular Modeling.
J.Med.Chem., 50:5938-5950, 2007

PubMed Abstract: Secretory phospholipase A2 (sPLA2) and matrix metallopreoteinases (MMPs) are key enzymes involved in rheumatoid arthritis (RA), and their modulation thus represents a potential therapeutic option. On the basis of Escherichia coli radioassay, synthetic peptides were designed and screened for sPLA2 inhibition. The linear peptide, 10f (PIP-18), inhibited the recombinant human synovial sPLA2 activity with an IC50 of 1.19 microM. Not only did the peptide interfere with the function of sPLA2, but it also appeared to inhibit mRNA expression of sPLA2 and various MMPs in IL-1beta-stimulated RA synovial fibroblast (RASF) cultures and thereby the production of the corresponding proteins (>80% inhibition). Nuclear magnetic resonance (NMR), modeling, and docking studies indicate that in solution the peptide exhibits a beta-turn at residues Trp-Asp-Gly-Val and possibly binds to the hydrophobic channel of sPLA2. The results strongly suggest that the modulatory action of peptide 10f may play a major role in counteracting the development of RA.

PubMed: 17973469
DOI: 10.1021/jm070385x

実験手法

SOLUTION NMR