3HH2

Crystal structure of the myostatin:follistatin 288 complex

3HH2 の概要

• エントリーDOI: 10.2210/pdb3hh2/pdb
• 分子名称: Growth/differentiation factor 8, Follistatin, PHOSPHATE ION, ... (5 entities in total)
• 機能のキーワード: protein-protein complex, tb domain, cystine knot motif, tgf-beta fold, disulfide linked dimer, follistatin domain (fsd), cleavage on pair of basic residues, cytokine, disulfide bond, glycoprotein, growth factor, secreted, signaling protein-cytokine complex, signaling protein/cytokine
• 由来する生物種: Mus musculus (mouse); 詳細
• 細胞内の位置: Secreted : O08689 P19883
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 88698.00

構造登録者

Cash, J.N.,Thompson, T.B. (登録日: 2009-05-14, 公開日: 2009-08-04, 最終更新日: 2017-11-01)

主引用文献

Cash, J.N.,Rejon, C.A.,McPherron, A.C.,Bernard, D.J.,Thompson, T.B.
The structure of myostatin:follistatin 288: insights into receptor utilization and heparin binding
Embo J., 28:2662-2676, 2009

PubMed Abstract: Myostatin is a member of the transforming growth factor-beta (TGF-beta) family and a strong negative regulator of muscle growth. Here, we present the crystal structure of myostatin in complex with the antagonist follistatin 288 (Fst288). We find that the prehelix region of myostatin very closely resembles that of TGF-beta class members and that this region alone can be swapped into activin A to confer signalling through the non-canonical type I receptor Alk5. Furthermore, the N-terminal domain of Fst288 undergoes conformational rearrangements to bind myostatin and likely acts as a site of specificity for the antagonist. In addition, a unique continuous electropositive surface is created when myostatin binds Fst288, which significantly increases the affinity for heparin. This translates into stronger interactions with the cell surface and enhanced myostatin degradation in the presence of either Fst288 or Fst315. Overall, we have identified several characteristics unique to myostatin that will be paramount to the rational design of myostatin inhibitors that could be used in the treatment of muscle-wasting disorders.

PubMed: 19644449
DOI: 10.1038/emboj.2009.205

実験手法

X-RAY DIFFRACTION (2.15 Å)