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Candida albicans uses a network of multiple signaling pathways to control the yeast¡úhypha transition. These include a mitogen-activated protein kinase pathway through Cph1, the cAMP-dependent protein kinase pathway via Efg1, a pH-responsive pathway through Rim101, the Tup1-mediated repression through Rfg1 and Nrg1, and pathways represented by transcription factors Cph2, Tec1 and Czf1. These pathways control the transcription of a common set of hypha-specific genes, many of which encode known virulence factors. The link between the signaling pathways and hyphal elongation is currently unknown, but there is evidence to suggest that Cdc42 likely plays a key role in hyphal morphogenesis. Unlike pseudohyphal growth in Saccharomyces cerevisiae, hyphal elongation is regulated independently of the cell cycle. Cellular differences between pseudohyphae and hyphae are further revealed by septin localization. |
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kuailezi(½ð±Ò+15,VIP+0):лл 5-19 17:54
kuailezi(½ð±Ò+15,VIP+0):лл 5-19 17:54
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Candida albicans uses a network of multiple signaling pathways to control the yeast¡úhypha transition. These include a mitogen-activated protein kinase pathway through Cph1, the cAMP-dependent protein kinase pathway via Efg1, a pH-responsive pathway through Rim101, the Tup1-mediated repression through Rfg1 and Nrg1, and pathways represented by transcription factors Cph2, Tec1 and Czf1. These pathways control the transcription of a common set of hypha-specificgenes, many of which encode known virulence factors. The link between the signaling pathways and hyphal elongation is currently unknown, but there is evidence to suggest that Cdc42 likely plays a key role in hyphal morphogenesis. Unlike pseudohyphal growth in Saccharomyces cerevisiae, hyphal elongation is regulated independently of the cell cycle. Cellular differences between pseudohyphae and hyphae are further revealed by septin localization. °×É«ÄîÖé¾úÀûÓöà¸öÐÅϢתµ¼Í¾¾¶À´¿ØÖƽÍĸ¡ú¾úË¿¹ý¶É¡£ÆäÖаüÀ¨Cph1ÓÐË¿·ÖÁÑÔ¼¤»îµ°°×¼¤Ã¸Í¾¾¶£¬Efg1 cAMPÒÀÀµµ°°×¼¤Ã¸Í¾¾¶£¬Rim101 pHÖµ·´Ó¦Í¾¾¶£¬Nrg1ºÍRfg1 µÄTup1½éµ¼×è¶ô»úÖÆ£¬×ªÂ¼Òò×ÓCph2 £¬ Tec1ºÍCzf1 ´ú±íÁËÕâЩ;¾¶¡£ÕâЩ;¾¶¿ØÖÆ×ÅÒ»Ì×ͨÓõľúË¿ÌØ¶¨»ùÒòµÄת¼£¬ÆäÖÐÐí¶à±àÂëÒÑÖªµÄÖ²¡Òò×Ó¡£ÐÅϢתµ¼Í¾¾¶ºÍ¾úË¿É쳤֮¼äµÄÁªÏµÄ¿Ç°Éв»Çå³þ£¬µ«ÓÐÖ¤¾Ý±íÃ÷£¬ Cdc42ÔÚ¾úË¿ÐÎ̬·½Ãæ¿ÉÄÜ·¢»Ó¹Ø¼ü×÷Óᣲ»ÏñÔÚÄð¾Æ½ÍĸÖмپúË¿µÄÉú³¤£¬¾úË¿É쳤ÔÚÕû¸öϸ°ûÖÜÆÚÖб»¿ØÖÆ¡£ÔÚ¼Ù¾úË¿ºÍ¾ú˿֮¼äµÄϸ°û²îÒìͨ¹ý°ûÁѵ°°×¶¨Î»½øÒ»²½±»½Òʾ¡£ ½ö¹©²Î¿¼ ![]() |

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