Molecular analysis of the Aedes aegypti carboxypeptidase gene family

Jun Isoe, Jorge Zamora, Roger Miesfeld

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

To gain a better understanding of coordinate regulation of protease gene expression in the mosquito midgut, we undertook a comprehensive molecular study of digestive carboxypeptidases in Aedes aegypti. Through a combination of cDNA cloning using degenerate PCR primers, and database mining of the recently completed A. aegypti genome, we cloned and characterized 18 A. aegypti carboxypeptidase genes. Bioinformatic analysis revealed that 11 of these genes belong to the carboxypeptidase A family (AaCPA-I through AaCPA-XI), and seven to the carboxypeptidase B gene family (AaCPB-I through AaCPB-VII). Phylogenetic analysis of 32 mosquito carboxypeptidases from five different species indicated that most of the sequence divergence in the carboxypeptidase gene family occurred prior to the separation of Aedes and Anopheles mosquito lineages. Unlike the CPA genes that are scattered throughout the A. aegypti genome, six of seven CPB genes were found to be located within a single 120 kb genome contig, suggesting that they most likely arose from multiple gene duplication events. Quantitative expression analysis revealed that 11 of the A. aegypti carboxypeptidase genes were induced up to 40-fold in the midgut in response to blood meal feeding, with peak expression times ranging from 3 to 36 h post-feeding depending on the gene.

Original languageEnglish (US)
Pages (from-to)68-73
Number of pages6
JournalInsect Biochemistry and Molecular Biology
Volume39
Issue number1
DOIs
StatePublished - Jan 2009

Fingerprint

Carboxypeptidases
carboxypeptidases
Aedes
Aedes aegypti
Genes
genes
Culicidae
Genome
midgut
genome
carboxypeptidase B
Carboxypeptidase B
carboxypeptidase A
Carboxypeptidases A
hematophagy
Anopheles
Gene Duplication
Gene Expression Regulation
gene duplication
Computational Biology

Keywords

  • Blood meal
  • Gene expression
  • Phylogenetic analysis
  • VectorBase

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Insect Science

Cite this

Molecular analysis of the Aedes aegypti carboxypeptidase gene family. / Isoe, Jun; Zamora, Jorge; Miesfeld, Roger.

In: Insect Biochemistry and Molecular Biology, Vol. 39, No. 1, 01.2009, p. 68-73.

Research output: Contribution to journalArticle

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