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Licensed Unlicensed Requires Authentication Published by De Gruyter December 4, 2012

Structural Analysis of the Lactoferrin Iron Binding Pockets

Damian Marchewka, Irena Roterman, Magdalena Strus, Klaudyna Śpiewak and Grzegorz Majka

ABSTRACT

Lactoferrin (Lf) - member of the transferrin family of proteins responsible for many different functions in the body of mammals participates in regulation of free iron level in the body fluids making the protein bacteriostatic.

The main goal of studies was to test the suitability of molecular dynamic simulation to study structural changes in the tertiary structure of lactoferrin.

According to ConSurf Server analysis one of the most conservative amino acids was found not only in iron- but also in carbohydrates- binding pockets which may suggest a significant impact of carbohydrates on the functions performed by lactoferrin. Pocket-Finder program applied to find iron-binding pockets revealed the potential Fe binding area. The stability of the ligand deprived protein was verified performing the 50 ns dynamic simulation using the Gromacs program. The tertiary structure changes during the simulation were observed in N-lob solely. No structural changes were observed in C-lob iron-binding pocket.

Published Online: 2012-12-04
Published in Print: 2012-12

© 2012 by Walter de Gruyter GmbH & Co.