Effects of ATP on the interaction of albumin and its C-terminal amino acid l-alanine with the "sugar" receptor cell in Protophormia terraenovae (Diptera: Calliphoridae)

LISCIA, ANNA MARIA;J. G. , Stoffolano J.r.;TOMASSINI BARBAROSSA, IOLE;MURONI, PATRIZIA;CRNJAR, ROBERTO MASSIMO

1995-01-01

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Abstract

Stimulation with bovine serum albumin (BSA) and its C-terminal amino acid l-alanine evokes spike activity from the "sugar" cell of the labellar chemosensilla in Protophormia. The presence of ATP in the BSA solution strongly enhances this effect, but is pH-dependent. On the contrary, addition of ATP to the l-alanine solution inhibits the "sugar" cell response regardless of pH. Reception mechanisms for BSA and l-alanine are discussed. © 1995.