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Crystallization and preliminary X-ray diffraction analysis of calexcitin from Loligo pealei: a neuronal protein implicated in learning and memory

Beaven, GDE; Erskine, PT; Wright, JN; Mohammed, F; Gill, R; Wood, SP; Vernon, J; ... Cooper, JB; + view all (2005) Crystallization and preliminary X-ray diffraction analysis of calexcitin from Loligo pealei: a neuronal protein implicated in learning and memory. ACTA CRYSTALLOGR F , 61 879 - 881. 10.1107/S1744309105026758.

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Abstract

The neuronal protein calexcitin from the long-finned squid Loligo pealei has been expressed in Escherichia coli and purified to homogeneity. Calexcitin is a 22 kDa calcium-binding protein that becomes up-regulated in invertebrates following Pavlovian conditioning and is likely to be involved in signal transduction events associated with learning and memory. Recombinant squid calexcitin has been crystallized using the hanging-drop vapour-diffusion technique in the orthorhombic space group P2(1)2(1)2(1). The unit-cell parameters of a = 46.6, b = 69.2, c = 134.8 angstrom suggest that the crystals contain two monomers per asymmetric unit and have a solvent content of 49%. This crystal form diffracts X-rays to at least 1.8 angstrom resolution and yields data of high quality using synchrotron radiation.

Type: Article
Title: Crystallization and preliminary X-ray diffraction analysis of calexcitin from Loligo pealei: a neuronal protein implicated in learning and memory
DOI: 10.1107/S1744309105026758
Keywords: CALCIUM-BINDING PROTEIN, GTP, STORAGE
URI: http://discovery.ucl.ac.uk/id/eprint/183383
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