Journal
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
Volume 146, Issue 2, Pages 265-270Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cbpb.2006.11.011
Keywords
Culex pipiens pallens; deltamethrin resistance; developmental expression; real-time PCR; ribosomal protein
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The 40S ribosomal protein S4 gene (RPS4) has been cloned from Culex pipiens pallens. An open reading frame (ORF) of 789 bp was found to encode a putative 262 amino acid protein. The deduced amino acid sequence shares 96% and 91% identity with PPS4 genes from Aedes and Anopheles respectively. Transcript expression of PPS4 was determined by real-time PCR in all life stages of deltamethrin-susceptible and -resistant strains. The results demonstrated that this gene is expressed at all developmental stages. Meanwhile, in pupae and adults, RPS4 is overexpressed in deltamethrin-resistant strain than in -susceptible strain. Our data for the first time suggests that increased expression of the RPS4 gene may play some role in the development of deltamethrin resistance in C. pipiens pallens. (c) 2006 Elsevier Inc. All rights reserved.
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