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Ribeiro, J.M. et al.

Ribeiro, Rowton, Charlab,

The salivary 5'-nucleotidase/phosphodiesterase of the hematophagus sand fly, Lutzomyia longipalpis [corrected].

Salivary gland homogenates from adult female Lutzomyia longipalpis sand flies contain large amounts of 5'-nucleotidase and phosphodiesterase activities. Phosphodiesterase activity was found to be associated with 5'-nucleotidase in several independent experiments: (i) it coelutes with 5'-nucleotidase on a molecular sieving column, (ii) it coelutes with 5'-nucleotidase on a chromatofocusing column, and (iii) it has the same thermal inactivation kinetics as the 5'-nucleotidase activity. Additionally, both activities are independent of divalent cations, and both are decreased following a blood meal, suggesting that they reside in the same molecule. The role of salivary nucleotidases and purine nucleotides in blood-feeding by sand flies is discussed.[1]

References

The salivary 5'-nucleotidase/phosphodiesterase of the hematophagus sand fly, Lutzomyia longipalpis [corrected]. Ribeiro, J.M., Rowton, E.D., Charlab, R. Insect Biochem. Mol. Biol. (2000) [Pubmed]

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