Alpha-11 Giardin, a protein from the annexin superfamily, is a 35.0 kDa protein from the intestinal protozoan parasite Giardia lamblia which triggers a form of diarrhea called giardiasis. Here, the cloning, expression, purification and the crystallization of alpha-11 giardin under two different conditions and in two different space groups is reported. Crystals from the first condition diffracted to 1.1 A and belong to a primitive orthorhombic space group, while crystals from the second condition, which included calcium in the crystallization solution, diffracted to 2.93 A and belong to a primitive monoclinic space group. Determination of the detailed atomic structure of alpha-11 giardin will provide a better insight into its biological function and might establish whether this class of proteins is a potential drug target against giardiasis.
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http://dx.doi.org/10.1107/S1744309106039650 | DOI Listing |
Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi
May 2023
College of Life Sciences, North China University of Technology, Tangshan, Hebei 063000, China.
Objective: To identify and verify the interacting protein of α-11 giardin, so as provide the experimental evidence for studies on the α-11 giardin function.
Methods: The yeast two-hybrid cDNA library of the C2 strain and the bait plasmid of α-11 giardin were constructed. All proteins interacting with α-11 giardin were screened using the yeast two-hybrid system.
Exp Parasitol
October 2013
Department of Environmental Medical Biology, Institute of Tropical Medicine, The Post Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 120-752, South Korea.
Giardia lamblia is a protozoan pathogen with distinct cytoskeletal structures, including median bodies and eight flagella. In this study, we examined components comprising G. lamblia flagella.
View Article and Find Full Text PDFJ Mol Biol
January 2009
Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697, USA.
J Mol Biol
April 2007
Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697, USA.
Alpha-11 giardin is a member of the multi-gene alpha-giardin family in the intestinal protozoan, Giardia lamblia. This gene family shares an ancestry with the annexin super family, whose common characteristic is calcium-dependent binding to membranes that contain acidic phospholipids. Several alpha giardins are highly expressed during parasite-induced diarrhea in humans.
View Article and Find Full Text PDFActa Crystallogr Sect F Struct Biol Cryst Commun
November 2006
Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697, USA.
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