Crystallization and preliminary crystallographic analysis of the human calcineurin homologous protein CHP2 bound to the cytoplasmic region of the Na+/H+ exchanger NHE1.

ABSTRACT: Calcineurin homologous protein (CHP) is a Ca2+-binding protein that directly interacts with and regulates the activity of all plasma-membrane Na+/H+-exchanger (NHE) family members. In contrast to the ubiquitous isoform CHP1, CHP2 is highly expressed in cancer cells. To understand the regulatory mechanism of NHE1 by CHP2, the complex CHP2-NHE1 (amino acids 503-545) has been crystallized by the sitting-drop vapour-diffusion method using PEG 3350 as precipitant. The crystals diffract to 2.7 A and belong to a tetragonal space group, with unit-cell parameters a = b = 49.96, c = 103.20 A.

SUBMITTER: Ben Ammar Y 

PROVIDER: S-EPMC1991313 | biostudies-literature | 2005 Oct

REPOSITORIES: biostudies-literature