Resonance Raman studies of oriented chromophores: Metmyoglobin single crystals
Resonance Raman studies of oriented chromophores: Metmyoglobin single crystals
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定向发色团的共振拉曼研究：高铁肌红蛋白单晶
DOI：
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
P. Champion
中科院分区：
文献类型：
--
作者：
J. Sage;D. Morikis;P. Champion
We report Soret enhanced resonance Raman studies of single crystals of metmyoglobin. Differing scattering intensities of the 345 cm−1 mode in solution and crystalline forms of the protein indicate a structural perturbation of the heme upon crystallization, possibly involving a propionate substituent of the heme. The immobilization of the heme in the crystal also allows observation of low‐quantum‐yield photoreduction of the heme that appears to be driven by Soret band absorption. We present experimental investigations of the orientational dependence of the intensity and polarization of several strong heme Raman modes along with calculations that explore the effects of vibrational mode symmetry and of differential coupling to x‐, y‐, and z‐polarized electronic transitions. Orientation studies provide evidence that the vinyl C=C stretching band at 1622 cm−1 is a superposition of two independent modes that couple selectively to the x‐ and y‐polarized Soret transitions. We also demonstrate how modes of nominal...
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肌红蛋白在低温下重组。
DOI：
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发表时间：
1987
期刊：
The Journal of biological chemistry
影响因子：
--
作者：
Chance,MR;Campbell,BF;Hoover,R;Friedman,JM
通讯作者：
Friedman,JM
豆血红蛋白中血红素的共振拉曼光谱。
DOI：
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发表时间：
1983
期刊：
The Journal of biological chemistry
影响因子：
--
作者：
Rousseau,DL;Ondrias,MR;LaMar,GN;Kong,SB;Smith,KM
通讯作者：
Smith,KM
影响因子：
--
作者：
G. Feher;Z. Kam
通讯作者：
G. Feher;Z. Kam
低温捕获的肌红蛋白种类的共振拉曼光谱反映了配体结合通道。
DOI：
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发表时间：
1987
期刊：
The Journal of biological chemistry
影响因子：
--
作者：
Campbell,BF;Chance,MR;Friedman,JM
通讯作者：
Friedman,JM