Secreted arginases from phylogenetically farrelated lichen species act as cross-recognition factors for two different algal cells.

@article{Legaz2004SecretedAF,
  title={Secreted arginases from phylogenetically farrelated lichen species act as cross-recognition factors for two different algal cells.},
  author={M Estrella Legaz and Blanca Fontaniella and A. M. Millanes and Vicente Carlos},
  journal={European journal of cell biology},
  year={2004},
  volume={83 8},
  pages={435-46}
}
Purified arginases secreted from Evernia prunastri and Xanthoria parietina thalli hydrolyze arginine in a Mn2+ -dependent reaction. Ca2+ cannot replace Mn2+, but its addition to reaction mixtures in the presence of Mn2+ significantly inhibited arginase activity. Arginases from both lichen species also show lectin function, binding to the cell wall of both homologous and heterologous algae. Such binding is enhanced by both Ca2+ and Mn2+ and results in cytoagglutination, which is counteracted by… CONTINUE READING