Sok2p transcription factor increases gene expression related to ammonia transport in yeast colonies.
Colonies produce ammonia, lowering stress factors and adjusting membrane protein levels that transport ammonia.
Analysis of gene expressions shows significant changes in stress responses related to ammonia signaling.
Results imply the importance of ammonia as a signaling molecule in yeast colony survival.
Abstract
Yeast colonies produce ammonia as a gaseous signal. Concomitantly, they lower stress factors and change the expression of genes encoding membrane proteins that transport ammonia (Ato proteins).