Increase in the Transition Enthalpy of Fibrinogen upon Adsorption onto Hydroxyapatite

Chin. Phys. Lett.

1999, Vol. 16

Issue (6): 431-433 DOI:

Original Articles

Increase in the Transition Enthalpy of Fibrinogen upon Adsorption onto Hydroxyapatite

CHEN Yong-li;MAO Hai-bin;ZHANG Xiu-fang;GONG Yan-dao;ZHAO Nan-ming

Department of Biological Science and Biotechnology, State Key Laboratory of Biomembrane and Membrane Biotechnology, Tsinghua University, Beijing 100084

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CHEN Yong-li, MAO Hai-bin, ZHANG Xiu-fang et al 1999 Chin. Phys. Lett. 16 431-433

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Abstract The increase of the protein transition enthalpy upon adsorption onto biomedical material surfaces was observed by measuring the differential scanning calorimetry (DSC) traces of bovine fibrinogen adsorbed onto a hydroxyapatite surface. The mechanism causing the transition enthalpy increase upon adsorption Was clarified by using DSC measurements of bovine fibrinogen for different ionic strength and sodium dodecyl sulfate concentrations. The results suggest that the increased fibrinogen transition enthalpy may be attributed to the electrostatic interactions between the carboxyl of the D domains and the calcium loci of hydroxyapatite, which may result in a more compact protein structure.

Keywords: 68.45.Da 87.15.By

Published: 01 June 1999

PACS:	68.45.Da
	87.15.By

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1999/V16/I6/0431

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	CHEN Yong-li
	MAO Hai-bin
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	ZHAO Nan-ming

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