mirage

Structural characterization of the interaction between a Pleckstrin homology domain and phosphatidylinositol 4,5-bisphosphate.

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

Structural characterization of the interaction between a Pleckstrin homology domain and phosphatidylinositol 4,5-bisphosphate.

Show full item record

Title: Structural characterization of the interaction between a Pleckstrin homology domain and phosphatidylinositol 4,5-bisphosphate.
Author: Harlan, John E.; Yoon, Ho Sup.; Hajduk, Philip J.; Fesik, Stephen W.
Copyright year: 1995
Abstract: The pleckstrin homology (PH) domain is a protein module of approximately 100 amino acids that is found in several proteins involved in signal transduction [for a recent review, see Gibson et al. (1994) Trends Biochem. Sci. 19,349-3531. Although the specific function of the PH domain has not yet been elucidated, many of the proteins which contain this domain associate with phospholipid membranes, and PH domains have been shown to bind to phosphatidylinositol 4,5-bisphosphate (PIP2) [Harlan et al. (1994) Nature 371, 168-1701 and the by subunits of G-proteins [Touhara et al. (1994) J. Biol. Chem. 269, 10217- 102201. We have postulated that pleckstrin homology domains may be important for the translocation of proteins to the membrane by an interaction with the negatively charged head group of phospholipids. Here we show the importance of three conserved lysine residues for binding to PIP2 by site-directed mutagenesis. These results should aid future site-directed mutagenesis studies in probing the function of PIP2-PH domain interactions in the various proteins containing this module. In addition, we examine the specificity of this binding and illustrate the importance of charge-charge interactions in PIP2-PH domain complex formation from binding experiments involving PIP2 analogs.
Subject: DRNTU::Science::Biological sciences::Biochemistry.
Type: Journal Article
Series/ Journal Title: Biochemistry
School: School of Biological Sciences
Rights: © 1995 American Chemical Society.

Files in this item

Files Size Format View

There are no files associated with this item.

   

DOI Query

- Get published version (via Digital Object Identifier)
   

This item appears in the following Collection(s)

Show full item record