Structural Insights Into Aspergillus Fumigatus Lectin Specificity: Afl Binding Sites are Functionally Non-Equivalent.Houser, J., Komarek, J., Cioci, G., Varrot, A., Imberty, A., Wimmerova, M.
(2015) Acta Crystallogr.,Sect.D 71: 442
- PubMed: 25760594
- DOI: 10.1107/S1399004714026595
- Primary Citation of Related Structures:
- PubMed Abstract:
The Aspergillus fumigatus lectin AFL was recently described as a new member of the AAL lectin family. As a lectin from an opportunistic pathogen, it might play an important role in the interaction of the pathogen with the human host. A detailed study ...
The Aspergillus fumigatus lectin AFL was recently described as a new member of the AAL lectin family. As a lectin from an opportunistic pathogen, it might play an important role in the interaction of the pathogen with the human host. A detailed study of structures of AFL complexed with several monosaccharides and oligosaccharides, including blood-group epitopes, was combined with affinity data from SPR and discussed in the context of previous findings. Its six binding sites are non-equivalent, and owing to minor differences in amino-acid composition they exhibit a marked difference in specific ligand recognition. AFL displays a high affinity in the micromolar range towards oligosaccharides which were detected in plants and also those bound on the human epithelia. All of these results indicate AFL to be a complex member of the lectin family and a challenging target for future medical research and, owing to its binding properties, a potentially useful tool in specific biotechnological applications.
CERMAV-CNRS, UPR5301, affiliated with Université de Grenoble and ICMG, BP53, 38041 Grenoble CEDEX 9, France.,Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés, Institut National des Sciences Appliquées, 31077 Toulouse CEDEX, France.,Central European Institute of Technology, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic.