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Malaria Vaccine Development

Duffy binding-like-gamma domain from Plasmodium protein expressed

Published in Vaccine Weekly, October 26th, 2005

Scientists have characterized a Duffy binding-like-gamma domain from Plasmodium falciparum erythrocyte membrane protein-1 expressed by a placental isolate.

"A recombinant Duffy binding-like (DBL)-gamma domain from a previously identified placental isolate, 732, was expressed by use of the baculovirus/insect cell system and was purified in milligram quantities. The recombinant protein binds specifically to chondroitin sulfate A (CSA) and inhibits CSA binding by placental infected erythrocytes (IEs). Polyclonal antibodies raised against the domain recognized the surfaces of live IEs from CSA-adherent clinical placental isolates. These antibodies also abrogated the...

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