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[用低温抑制法研究血红蛋白和肌红蛋白氰化物复合物的非平衡态]

[Study of nonequilibrium states of cyanide complexes of hemoglobin and myoglobin by a low-temperature inhibition method].

作者信息

Stepanov S V, Burvaev D Sh, Khangulov S V

出版信息

Biofizika. 1988 Nov-Dec;33(6):944-9.

PMID:2854746
Abstract

Cyanide-ferrihemoglobin (myoglobin) interaction was studied by freeze-quenching technique and low-temperature ESR at various pH values. New ESR signals of these low-spin cyanide-protein complexes were recorded. These signals were interpreted as indication of the appearance of conformationally non-equilibrium states of these complexes. The relaxation to the equilibrium states of corresponding proteins takes about hundred milliseconds.

摘要

采用冷冻猝灭技术和低温电子自旋共振（ESR）在不同pH值下研究了氰化物与高铁血红蛋白（肌红蛋白）的相互作用。记录了这些低自旋氰化物 - 蛋白质复合物的新ESR信号。这些信号被解释为这些复合物构象非平衡态出现的指示。相应蛋白质向平衡态的弛豫大约需要一百毫秒。

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