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[The formation and development of the denaturation theory of injuries and irritation]
Abstract:
The main idea of the denaturation theory (Nasonov, Aleksandrov, 1940) is that the reversible denaturation changes in the most unstable cellular proteins lay in the basis of the similar nonspecific injuries in the cell caused by different agents. Changes of this type also may be developed in the cell as the result of physiological stimuli. The latter suggestion is confirmed by current data about increasing of the conformational flexibility of the protein receptors under specific challenge. Conformational changes of the proteins to "the molten globule state" which is intermediate between native and denaturated states take place in many biological processes. Decrease of the conformational flexibility of the proteins connected with increase of their thermostability also plays an important role in the cell activity at normal and stress conditions. Denaturation theory of the injuries and irritation led to the understanding of the correlation in the ectothermic organisms between life temperature and the level of the conformational flexibility of their proteins which should be supported in the semi-stable state.
Insights
Cellular proteins undergo reversible denaturation, a key factor in nonspecific cell injuries from various agents or physiological stimuli. This protein flexibility is crucial for cell activity under normal and stress conditions, especially in ectothermic organisms.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Biology
Context:
- The denaturation theory (Nasonov, Aleksandrov, 1940) posits that reversible protein denaturation underlies cellular injuries caused by diverse agents.
- Cellular responses to physiological stimuli also involve similar protein conformational changes.
- Current research highlights increased conformational flexibility in protein receptors upon specific challenges.
Purpose:
- To explore the role of reversible protein denaturation in cellular injury and physiological responses.
- To investigate the concept of protein conformational flexibility in cellular activity and stress adaptation.
- To examine the link between environmental temperature and protein conformational states in ectotherms.
Summary:
- Reversible denaturation of unstable cellular proteins is proposed as the basis for nonspecific cellular injuries induced by various agents and physiological stimuli.
- Protein conformational flexibility, including transitions to a "molten globule state," is integral to biological processes.
- Decreased conformational flexibility, coupled with increased thermostability, is vital for cellular function under both normal and stress conditions.
Impact:
- The denaturation theory provides a framework for understanding cellular injury and irritation mechanisms.
- It elucidates the correlation between environmental temperature and protein conformational flexibility in ectothermic organisms, essential for maintaining cellular stability.
- This research contributes to understanding cellular adaptation and resilience to environmental and physiological challenges.