Crystallization and preliminary X-ray study of an N-terminal fragment of rat liver ribosomal P2 protein.
Ribosomal P proteins have been shown to be involved in the binding of elongation factors and participate in factor-dependent GTP hydrolysis. The P proteins form the pentamer (P1/P2)(2)-P0 constituting the lateral flexible stalk of the 60S ribosomal subunit. The highly soluble domain (1-65) of rat liver P2 has been overexpressed in Escherichia coli as an N-terminal poly-His-tagged protein and crystallized. To reduce nucleation and improve crystal morphology and diffraction power, the crystals were grown in a gel matrix and an oil barrier was added between the reservoir and the drop to reduce the rate of vapour diffusion. This dramatically reduced the nucleation in the drops and yielded diffraction-quality crystals. Data were collected to 2.4 A resolution at beamline ID 14-1, ESRF. The crystals belong to the orthorhombic space group P2(1)2(1)2, with unit-cell parameters a = 37.7, b = 96.7, c = 135.0 A.
Mandelman
David
D
Laboratoire de Bio-Cristallographie, Institut de Biologie et Chimie des Protéines, CNRS et Université Claude Bernard Lyon I-UMR 5086, 69367 Lyon CEDEX 07, France.
Gonzalo
Philippe
P
Lavergne
Jean Pierre
JP
Corbier
Catherine
C
Reboud
Jean-Paul
JP
Haser
Richard
R
D000818:Animals; D003460:Crystallization; D018360:Crystallography, X-Ray; D008099:Liver / Q000737:chemistry*; D010750:Phosphoproteins / Q000737:chemistry*; D051381:Rats; D012269:Ribosomal Proteins / Q000737:chemistry*
D010750:Phosphoproteins; D012269:Ribosomal Proteins; C031937:phosphoprotein P2, ribosomal