Proteome plasticity in response to persistent environmental change.
Mol Cell
; 81(16): 3294-3309.e12, 2021 08 19.
Article
em En
| MEDLINE
| ID: mdl-34293321
ABSTRACT
Temperature is a variable component of the environment, and all organisms must deal with or adapt to temperature change. Acute temperature change activates cellular stress responses, resulting in refolding or removal of damaged proteins. However, how organisms adapt to long-term temperature change remains largely unexplored. Here we report that budding yeast responds to long-term high temperature challenge by switching from chaperone induction to reduction of temperature-sensitive proteins and re-localizing a portion of its proteome. Surprisingly, we also find that many proteins adopt an alternative conformation. Using Fet3p as an example, we find that the temperature-dependent conformational difference is accompanied by distinct thermostability, subcellular localization, and, importantly, cellular functions. We postulate that, in addition to the known mechanisms of adaptation, conformational plasticity allows some polypeptides to acquire new biophysical properties and functions when environmental change endures.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estresse Fisiológico
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Adaptação Fisiológica
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Proteoma
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Transcriptoma
Limite:
Animals
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article