Literature citations

Purification, crystallization and preliminary X-ray analysis of the inverse F-BAR domain of the human srGAP2 protein.

Bin-Amphiphysin-Rvs (BAR) domain proteins play essential roles in diverse cellular processes by inducing membrane invaginations or membrane protrusions. Among the BAR superfamily, the `classical' BAR and Fes/CIP4 homology BAR (F-BAR) subfamilies of proteins usually promote membrane invaginations, whereas the inverse BAR (I-BAR) subfamily generally incur membrane protrusions. Despite possessing an N-terminal F-BAR domain, the srGAP2 protein regulates neurite outgrowth and neuronal migration by causing membrane protrusions reminiscent of the activity of I-BAR domain proteins. In this study, the inverse F-BAR (IF-BAR) domain of human srGAP2 was overexpressed, purified and crystallized. The crystals of the srGAP2 IF-BAR domain protein diffracted to 3.50 Å resolution and belonged to space group P2(1). These results will facilitate further structural determination of the srGAP2 IF-BAR domain and the ultimate elucidation of its peculiar behaviour of inducing membrane protrusions rather than membrane invaginations.

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