Crystallization and preliminary crystallographic studies of LipA, a secretory lipase/esterase from Xanthomonas oryzae pv. oryzae

Aparna, G. ; Chatterjee, A. ; Jha, G. ; Sonti, R. V. ; Sankaranarayanan, R. (2007) Crystallization and preliminary crystallographic studies of LipA, a secretory lipase/esterase from Xanthomonas oryzae pv. oryzae Acta Crystallographica Section F, 63 . pp. 708-710. ISSN 1744-3091

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Official URL: http://scripts.iucr.org/cgi-bin/paper?en5248

Related URL: http://dx.doi.org/10.1107/S1744309107034367

Abstract

Xanthomonas oryzae pv. oryzae is the causal agent of bacterial leaf blight, a serious disease of rice. Several enzymes that are secreted through the type II secretion system of this bacterium play an important role in the plant-microbe interaction, being important for virulence and also being able to induce potent host defence responses. One of these enzymes is a secretory lipase/esterase, LipA, which shows a very weak homology to other bacterial lipases and gives a positive tributyrin plate assay. In this study, LipA was purified from the culture supernatant of an overexpressing clone of X. oryzae pv. oryzae and two types of crystals belonging to space group C2 but with two different unit-cell parameters were obtained using the hanging-drop vapour-diffusion method. Type I crystals diffract to a maximum resolution of 1.89 Å and have unit-cell parameters a = 93.1, b = 62.3, c = 66.1 Å, β = 90.8°. Type II crystals have unit-cell parameters a = 103.6, b = 54.6, c = 66.3 Å, β = 92.6° and diffract to 1.86 Å. Solvent-content analysis shows one monomer in the asymmetric unit in both the crystal forms.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Secretory Lipases; Xanthomonas oryzae pv. Oryzae; Plant Pathogens
ID Code:66852
Deposited On:28 Oct 2011 04:03
Last Modified:14 Nov 2011 13:32

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