We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The Ability of Chlorophyll to Trap Carcinogen Aflatoxin B 1 : A Theoretical Approach.
- Authors
Vázquez-Durán, Alma; Téllez-Isaías, Guillermo; Hernández-Rodríguez, Maricarmen; Ruvalcaba, René Miranda; Martínez, Joel; Nicolás-Vázquez, María Inés; Aceves-Hernández, Juan Manuel; Méndez-Albores, Abraham
- Abstract
The coordination of one and two aflatoxin B1 (AFB1, a potent carcinogen) molecules with chlorophyll a (chl a) was studied at a theoretical level. Calculations were performed using the M06-2X method in conjunction with the 6-311G(d,p) basis set, in both gas and water phases. The molecular electrostatic potential map shows the chemical activity of various sites of the AFB1 and chl a molecules. The energy difference between molecular orbitals of AFB1 and chl a allowed for the establishment of an intermolecular interaction. A charge transfer from AFB1 to the central cation of chl a was shown. The energies of the optimized structures for chl a show two configurations, unfolded and folded, with a difference of 15.41 kcal/mol. Chl a appeared axially coordinated to the plane (α-down or β-up) of the porphyrin moiety, either with the oxygen atom of the ketonic group, or with the oxygen atom of the lactone moiety of AFB1. The complexes of maximum stability were chl a 1-α-E-AFB1 and chl a 2-β-E-AFB1, at −36.4 and −39.2 kcal/mol, respectively. Additionally, with two AFB1 molecules were chl a 1-D-2AFB1 and chl a 2-E-2AFB1, at −60.0 and −64.8 kcal/mol, respectively. Finally, biosorbents containing chlorophyll could improve AFB1 adsorption.
- Subjects
MOLECULAR orbitals; CARCINOGENS; AFLATOXINS; CHLOROPHYLL; ELECTRIC potential; INTERMOLECULAR interactions; CHARGE transfer
- Publication
International Journal of Molecular Sciences, 2022, Vol 23, Issue 11, p6068
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms23116068