Binding of Hematin by a New Class of Glutathione Transferase from the Blood-Feeding Parasitic Nematode Haemonchus contortus
AUTOR(ES)
van Rossum, Arjan J.
FONTE
American Society for Microbiology
RESUMO
The phase II detoxification system glutathione transferase (GST) is associated with the establishment of parasitic nematode infections within the gastrointestinal environment of the mammalian host. We report the functional analysis of a GST from an important worldwide parasitic nematode of small ruminants, Haemonchus contortus. This GST shows limited activity with a range of classical GST substrates but effectively binds hematin. The high-affinity binding site for hematin was not present in the GST showing the most identity, CE07055 from the free-living nematode Caenorhabditis elegans. This finding suggests that the high-affinity binding of hematin may represent a parasite adaptation to blood or tissue feeding from the host.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=387910Documentos Relacionados
- Protective immunity to a blood-feeding nematode (Haemonchus contortus) induced by parasite gut antigens.
- Ecological patterns of blood-feeding by kissing-bugs (Hemiptera: Reduviidae: Triatominae)
- Anti-thrombosis Repertoire of Blood-feeding Horsefly Salivary Glands*
- Gene expression patterns associated with blood-feeding in the malaria mosquito Anopheles gambiae
- Comparative studies on the biology and filarial susceptibility of selected blood-feeding and autogenous Aedes togoi sub-colonies
