Journal article

Evidence for a common role for the serine-type Plasmodium falciparum serine repeat antigen proteases: Implications for vaccine and drug design

Joanne E McCoubrie, Susanne K Miller, Tobias Sargeant, Robert T Good, Anthony N Hodder, Terence P Speed, Tania F de Koning-Ward, Brendan S Crabb

Infection and Immunity | AMER SOC MICROBIOLOGY | Published : 2007

Abstract

Serine repeat antigens (SERAs) are a family of secreted "cysteine-like" proteases of Plasmodium parasites. Several SERAs possess an atypical active-site serine residue in place of the canonical cysteine. The human malaria parasite Plasmodium falciparum possesses six "serine-type" (SERA1 to SERA5 and SERA9) and three "cysteine-type" (SERA6 to SERA8) SERAs. Here, we investigate the importance of the serine-type SERAs to blood-stage parasite development and examine the extent of functional redundancy among this group. We attempted to knock out the four P. falciparum serine-type SERA genes that have not been disrupted previously. SERA1, SERA4, and SERA9 knockout lines were generated, while only ..

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