1JEG

Solution structure of the SH3 domain from C-terminal Src Kinase complexed with a peptide from the tyrosine phosphatase PEP

1JEG の概要

• エントリーDOI: 10.2210/pdb1jeg/pdb
• 分子名称: TYROSINE-PROTEIN KINASE CSK, HEMATOPOIETIC CELL PROTEIN-TYROSINE PHOSPHATASE 70Z-PEP (2 entities in total)
• 機能のキーワード: sh3 domain, protein-peptide complex, tyrosine phosphatase, kinase, transferase-hydrolase complex, transferase/hydrolase
• 由来する生物種: Mus musculus (house mouse); 詳細
• 細胞内の位置: Cytoplasm: P41241 P29352
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 12110.81

構造登録者

Ghose, R.,Shekhtman, A.,Goger, M.J.,Ji, H.,Cowburn, D. (登録日: 2001-06-17, 公開日: 2001-10-31, 最終更新日: 2024-05-22)

主引用文献

Ghose, R.,Shekhtman, A.,Goger, M.J.,Ji, H.,Cowburn, D.
A novel, specific interaction involving the Csk SH3 domain and its natural ligand.
Nat.Struct.Biol., 8:998-1004, 2001

PubMed Abstract: C-terminal Src kinase (Csk) takes part in a highly specific, high affinity interaction via its Src homology 3 (SH3) domain with the proline-enriched tyrosine phosphatase PEP in hematopoietic cells. The solution structure of the Csk-SH3 domain in complex with a 25-residue peptide from the Pro/Glu/Ser/Thr-rich (PEST) domain of PEP reveals the basis for this specific peptide recognition motif involving an SH3 domain. Three residues, Ala 40, Thr 42 and Lys 43, in the SH3 domain of Csk specifically recognize two hydrophobic residues, Ile 625 and Val 626, in the proline-rich sequence of the PEST domain of PEP. These two residues are C-terminal to the conventional proline-rich SH3 domain recognition sequence of PEP. This interaction is required in addition to the classic polyproline helix (PPII) recognition by the Csk-SH3 domain for the association between Csk and PEP in vivo. NMR relaxation analysis suggests that Csk-SH3 has different dynamic properties in the various subsites important for peptide recognition.

PubMed: 11685249
DOI: 10.1038/nsb1101-998

実験手法

SOLUTION NMR