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.
journal_name
Parasitologyjournal_title
Parasitologyauthors
Steuart RF,O'Handley R,Lipscombe RJ,Lock RA,Thompson RCdoi
10.1017/S0031182008004988subject
Has Abstractpub_date
2008-12-01 00:00:00pages
1621-7issue
14eissn
0031-1820issn
1469-8161pii
S0031182008004988journal_volume
135pub_type
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