Definition of second messenger in English:

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second messenger


A substance whose release within a cell is promoted by a hormone and that brings about a response by the cell.
Example sentences
  • Fatty acids function as second messengers and coregulators of gene transcription.
  • Examples of proteins and second messengers that appear to act in multiple response pathways are also described.
  • This enzyme is abundantly expressed in the lung tissue and thereby stabilizes the second messenger.

For editors and proofreaders

Syllabification: sec·ond mes·sen·ger

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