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Structural determinants for the formation of sulfhemeprotein complexes. | LitMetric

Structural determinants for the formation of sulfhemeprotein complexes.

Biochem Biophys Res Commun

Department of Chemistry, University of Puerto Rico, Mayagüez Campus, P.O. Box 9019, Mayagüez, Puerto Rico 00681-9019, Puerto Rico.

Published: October 2010

AI Article Synopsis

Article Abstract

Several hemoglobins were explored by UV-Vis and resonance Raman spectroscopy to define sulfheme complex formation. Evaluation of these proteins upon the reaction with H(2)O(2) or O(2) in the presence of H(2)S suggest: (a) the formation of the sulfheme derivate requires a HisE7 residue in the heme distal site with an adequate orientation to form an active ternary complex; (b) that the ternary complex intermediate involves the HisE7, the peroxo or ferryl species, and the H(2)S molecule. This moiety precedes and triggers the sulfheme formation.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2992849PMC
http://dx.doi.org/10.1016/j.bbrc.2010.08.068DOI Listing

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