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Purification, crystallization and preliminary data analysis of ligand-receptor complexes of growth and differentiation factor 5 (GDF5) and BMP receptor IB (BRIB).

Authors
Type
Published Article
Journal
Acta Crystallographica Section F Structural Biology and Crystallization Communications
1744-3091
Publisher
International Union of Crystallography
Publication Date
Volume
65
Issue
Pt 8
Pages
779–783
Identifiers
DOI: 10.1107/S1744309109024142
PMID: 19652338
Source
Medline

Abstract

The ligand-receptor complex of GDF5 bound to its type I and type II receptors BRIB and ActRIIB was produced and crystallized. Crystals of the GDF5-BRIB complex could only be obtained if a ternary complex comprising GDF5, BRIB and the extracellular domain of the type II receptor ActRIIB was used in crystallization; however, the type II receptor ActRIIB was lost during crystallization. Crystals of this complex belonged to the tetragonal space group P4(2)2(1)2, with unit-cell parameters a = b = 76.46, c = 82.78 A. Small changes in the crystallization condition resulted in crystals with a different morphology. These crystals consisted of the full ternary complex GDF5-BRIB-ActRIIB, but only diffracted to low resolution.

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