Structural highlights
Function
PTN6_HUMAN Modulates signaling by tyrosine phosphorylated cell surface receptors such as KIT and the EGF receptor/EGFR. The SH2 regions may interact with other cellular components to modulate its own phosphatase activity against interacting substrates. Together with MTUS1, induces UBE2V2 expression upon angiotensin II stimulation. Plays a key role in hematopoiesis.[1]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The substrate specificity of the catalytic domain of SHP-1, an important regulator in the proliferation and development of hematopoietic cells, is critical for understanding the physiological functions of SHP-1. Here we report the crystal structures of the catalytic domain of SHP-1 complexed with two peptide substrates derived from SIRPalpha, a member of the signal-regulatory proteins. We show that the variable beta5-loop-beta6 motif confers SHP-1 substrate specificity at the P-4 and further N-terminal subpockets. We also observe a novel residue shift at P-2, the highly conserved subpocket in protein- tyrosine phosphatases. Our observations provide new insight into the substrate specificity of SHP-1.
Structural basis for substrate specificity of protein-tyrosine phosphatase SHP-1.,Yang J, Cheng Z, Niu T, Liang X, Zhao ZJ, Zhou GW J Biol Chem. 2000 Feb 11;275(6):4066-71. PMID:10660565[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Keilhack H, Muller M, Bohmer SA, Frank C, Weidner KM, Birchmeier W, Ligensa T, Berndt A, Kosmehl H, Gunther B, Muller T, Birchmeier C, Bohmer FD. Negative regulation of Ros receptor tyrosine kinase signaling. An epithelial function of the SH2 domain protein tyrosine phosphatase SHP-1. J Cell Biol. 2001 Jan 22;152(2):325-34. PMID:11266449
- ↑ Yang J, Cheng Z, Niu T, Liang X, Zhao ZJ, Zhou GW. Structural basis for substrate specificity of protein-tyrosine phosphatase SHP-1. J Biol Chem. 2000 Feb 11;275(6):4066-71. PMID:10660565
