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Structural insights into Aspergillus fumigatus lectin specificity: AFL binding sites are functionally non-equivalent

Název česky Strukturní pohled na specifitu lektinu z Aspergillus fumigatus: vazebná místa AFL jsou funkčně neekvivalentní
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HOUSER Josef KOMÁREK Jan CIOCI Gianluca VARROT Annabelle IMBERTY Anne WIMMEROVÁ Michaela

Rok publikování 2015
Druh Článek v odborném periodiku
Časopis / Zdroj ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
Fakulta / Pracoviště MU

Středoevropský technologický institut

Citace
www http://journals.iucr.org/d/issues/2015/03/00/mh5137/mh5137.pdf
Doi http://dx.doi.org/10.1107/S1399004714026595
Obor Biochemie
Klíčová slova Aspergillus fumigatus; lectin; SPR; protein-saccharide complex; pathogen
Popis 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.
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