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Team:Brown/Project All Together
From 2009.igem.org
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[[Image:Cascade.gif|center]]1) Mast cells release histamine during the allergic response. | [[Image:Cascade.gif|center]]1) Mast cells release histamine during the allergic response. | ||
Revision as of 02:42, 22 October 2009
2) Histamine binds to our re-engineered histamine receptor.
3) This receptor’s intracellular kinase domain EnvZ phosphorylates transcription factor OmpR.
4) OmpR turns on transcription of DNA under the OmpC promoter.
5) The genes for rEV131 and its attached secretion signal are transcribed.
6) After translation, the secretion peptide allows rEV131 to be released into the extracellular fluid.
7) rEV131 sequesters histamine
8) The transcription and secretion of rEV131 continues as long as histamine is present in the extracellular fluid. When histamine concentration returns to its pre-allergic response state, production of rEV131 stops because the initiating ligand histamine is no longer present.
