Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/64608
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Type: Journal article
Title: Alpha 2 giardin is an assemblage A-specific protein of human infective Giardia duodenalis
Author: Steuart, R.
O'Handley, R.
Lipscombe, R.
Lock, R.
Thompson, R.
Citation: Parasitology, 2008; 135(14):1621-1627
Publisher: Cambridge Univ Press
Issue Date: 2008
ISSN: 0031-1820
1469-8161
Statement of
Responsibility: 
R. F. L. Steuart, R. O’Handley, R. J. Lipscombe, R.A. Lock and R. C. A. Thompson
Abstract: Of the 7 genetic assemblages of the parasite Giardia duodenalis only 2 (A and B) are known to cause infections in humans. These assemblages have been characterized in detail at the genomic level but few studies have examined differences in the proteins expressed. Employing one and two-dimensional PAGE we have identified an assemblage A-specific protein of human infective G. duodenalis; alpha 2 giardin. The protein difference was evident using both electrophoretic techniques. Alpha 2 giardin is known to be a structural protein and associates with the caudal flagella and the plasma membrane; however, its exact function is unknown. Although several proteins unique to assemblage B were also observed, we were unable to identify these proteins due to a lack of genomic data available for assemblage B isolates. Together, these proteins represent distinct phenotypic differences between the human infective assemblages of G. duodenalis and support the need to revise the taxonomy of this parasite.
Keywords: Giardia; comparative proteomics; inter-assemblage variation; alpha 2 giardin.
Rights: Copyright © 2008 Cambridge University Press
RMID: 0020108915
DOI: 10.1017/S0031182008004988
Appears in Collections:Animal and Veterinary Sciences publications

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