trans form of a photoswitchable PDZ domain crosslinked with an azobenzene derivativetrans form of a photoswitchable PDZ domain crosslinked with an azobenzene derivative

Structural highlights

2m10 is a 1 chain structure with sequence from Homo sapiens. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PTN13_HUMAN Tyrosine phosphatase which regulates negatively FAS-induced apoptosis and NGFR-mediated pro-apoptotic signaling.[1]

Publication Abstract from PubMed

By covalently linking an azobenzene photoswitch across the binding groove of a PDZ domain, a conformational transition, similar to the one occurring upon ligand binding to the unmodified domain, can be initiated on a picosecond timescale by a laser pulse. The protein structures have been characterized in the two photoswitch states through NMR spectroscopy and the transition between them through ultrafast IR spectroscopy and molecular dynamics simulations. The binding groove opens on a 100-ns timescale in a highly nonexponential manner, and the molecular dynamics simulations suggest that the process is governed by the rearrangement of the water network on the protein surface. We propose this rearrangement of the water network to be another possible mechanism of allostery.

Kinetic response of a photoperturbed allosteric protein.,Buchli B, Waldauer SA, Walser R, Donten ML, Pfister R, Blochliger N, Steiner S, Caflisch A, Zerbe O, Hamm P Proc Natl Acad Sci U S A. 2013 Jul 1. PMID:23818626[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. Villa F, Deak M, Bloomberg GB, Alessi DR, van Aalten DM. Crystal structure of the PTPL1/FAP-1 human tyrosine phosphatase mutated in colorectal cancer: evidence for a second phosphotyrosine substrate recognition pocket. J Biol Chem. 2005 Mar 4;280(9):8180-7. Epub 2004 Dec 20. PMID:15611135 doi:10.1074/jbc.M412211200
  2. Buchli B, Waldauer SA, Walser R, Donten ML, Pfister R, Blochliger N, Steiner S, Caflisch A, Zerbe O, Hamm P. Kinetic response of a photoperturbed allosteric protein. Proc Natl Acad Sci U S A. 2013 Jul 1. PMID:23818626 doi:10.1073/pnas.1306323110
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