On the molecular interaction between lactoferrin and the dye Red HE-3B. A novel approach for docking a charged and highly ... View Full Text


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Article Info

DATE

2002-12

AUTHORS

Mariano Grasselli, Osvaldo Cascone, F. Birger Anspach, Jose M. Delfino

ABSTRACT

Lactoferrin (Lf) is a non-heme, iron binding protein present in many physiological fluids of vertebrates where its main role is the microbicidal activity. It has been isolated by different methods, including dye-affinity chromatography. Red HE-3B is one of the most common triazinic dyes applied in protein purification, but scant knowledge is available on structural details and on the energetics of its interaction with proteins. In this work we present a computational approach useful for identifying possible binding sites for Red HE-3B in apo and holo forms of Lfs from human and bovine source. A new geometrical description of Red HE-3B is introduced which greatly simplifies the conformational analysis. This approach proved to be of particular advantage for addressing conformational ensembles of highly flexible molecules. Predictions from this analysis were correlated with experimentally observed dye-binding sites, as mapped by protection from proteolysis in Red HE-3B/Lf complexes. This method could bear relevance for the screening of possible dye-binding sites in proteins whose structure is known and as a potential tool for the design of engineered protein variants which could be purified by dye-affinity chromatography. More... »

PAGES

917-934

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1023/a:1023868309253

DOI

http://dx.doi.org/10.1023/a:1023868309253

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1040743000

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/12825623


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