Journal
CELL AND TISSUE RESEARCH
Volume 320, Issue 1, Pages 175-185Publisher
SPRINGER
DOI: 10.1007/s00441-004-1067-3
Keywords
peritrophic matrix; midgut; mucin; mosquito Anopheles gambiae (Insecta)
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Funding
- NCI NIH HHS [P30 CA43703-12] Funding Source: Medline
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The gene Ag-Aper14 encodes a novel peritrophic matrix (or peritrophic membrane; PM) protein in the mosquito Anopheles gambiae. The Ag-Aper14 protein is merely 89 amino acids long and has a single putative chitin-binding domain. Prior to blood feeding, the AgAper14 protein is stored in secretory vesicles next to the epithelial cell lumenal surface. Immunoelectron microscopy has revealed that Ag-Aper14 co-localizes to the same secretory vesicles as another PM protein, Ag-Aper1, indicating a common mode of regulated secretion. Conversely, Ag-Muc1, an epithelial cell-surface protein, does not colocalize to these secretory vesicles and is detected only on the cell surface. After blood feeding, Ag-Aper14 is secreted and incorporated into the PM that surrounds the ingested blood.
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