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Interaction of extracellular hemoglobin Amynthas gracilis (HbAg) with heavy metal

Grant number: 16/21022-0
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): December 01, 2016
Effective date (End): November 30, 2018
Field of knowledge:Biological Sciences - Biophysics - Molecular Biophysics
Principal researcher:Patrícia Soares Santiago
Grantee:Raphael de Araújo Campos
Home Institution: Universidade Estadual Paulista (UNESP). Campus de Registro. Registro , SP, Brazil
Associated research grant:15/11447-1 - Biophysical characterization of Amynthas gracilis hemoprotein and its potential use as biosensor of environmental contamination, AP.JP


This research project aims to perform studies related to the interaction of giant extracellular hemoglobin extracted from annelid Amynthas gracilis (HbAg) in the presence heavy metals. The importance of studying the giant extracellular hemoglobin is related to its high stability oligomeric, oxidation resistance, high cooperativity and a high affinity to bind oxygen, in addition to their potential use in biomedical applications such as blood substitute. These properties make the extracellular hemoglobins quite unique and interesting for studies with biotechnological applications. Thus, to evaluate the physico-chemical properties of HbAg in the absence and presence of heavy metals, it proposes the use of different biophysical techniques such as optical absorption and fluorescence. Thus we evaluate the effect of metals in the dissociation and / or denaturation of HbAg, where we propose a decoupling mechanisms and denaturation of HbAg. These studies are very important to evaluate the HbAg of potential as an environmental contamination biosensor. (AU)

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