SURFACE-ENHANCED RESONANCE RAMAN-SPECTROSCOPY OF MICROPEROXIDASES AND HORSERADISH-PEROXIDASE ADSORBED ON SILVER HYDROSOL

被引：7
|
作者：
SILIN, VI
TALAIKYTE, Z
KULYS, J
机构：
[1] Institute of Biochemistry, Academy of Science of Lithuania, Vilnius, 2021
来源：
VIBRATIONAL SPECTROSCOPY | 1993年 / 5卷 / 03期
关键词：
RAMAN SPECTROMETRY; HEME PROTEINS; IRON; PEROXIDASES; SILVER;
D O I：
10.1016/0924-2031(93)87010-Q
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Surface-enhanced resonance Raman spectra of microperoxidases MP-8, MP-9, MP-11, horseradish peroxidase (HRP) and 2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphine iron(III) chloride [OEP Fe(III) chloride] molecules adsorbed on silver hydrosol were studied. It was established that when adsorbed MP-8, MP-9, HRP and OEP Fe(III) chloride existed in high-spin state and MP-11 in low-spin state. The absence of spin state conversion in the case of MP-11 is supposed to be related to the formation of intermolecular coordination between the heme iron of one molecule and the NH2 group of Val-11 or Lys-13 of the other. The oxidation state of iron does not change with adsorption.
引用
收藏
页码：345 / 351
页数：7
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