Overview:
PDE1C is a member of the phosphodiesterases (PDE) family which catalyzes the hydrolysis of cyclic nucleotides cAMP and cGMP to the corresponding nucleoside 5-prime-monophosphates. PDE1C binds both cAMP and cGMP with high affinity and hydrolyzes both substrates with similar rates of catalysis (1). PDE1C is a calmodulin-dependent PDE and is stimulated by calcium-calmodulin complex. PDE1C is expressed at high levels in human cardiac myocytes with an intracellular distribution distinct from that of other phosphodiesterases (2). PDE1C levels decrease in all conditions that inhibited cell proliferation and PDE1C is a useful marker in studying the dynamics of proliferation and migration of various cells.
Gene Aliases:
Hcam3
Genbank Number:
NM_005020
References:
1. Loughney, K. et al: Isolation and characterization of cDNAs corresponding to two human calcium, calmodulin-regulated, 3-prime, 5-prime-cyclic nucleotide phosphodiesterases. J. Biol. Chem. 271: 796-806, 1996. 2. Vandeput, F. et al; Cyclic nucleotide phosphodiesterase PDE1C1 in human cardiac myocytes. J. Biol. Chem. 282: 32749-42757, 2007.
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我在做5RACE,选用TaKaRa公司的RNA反转录酶(RNaseH-),不知道这个酶好不好,有什么需要注意的。
没有序列识别的功能,他就是简单的催化相邻DNA链的5-P末端和3'-OH末端以磷酸二酯键结合的反应,需ATP作辅酶。 不仅可以催化粘性末端之间或平滑末端之间的DNA的连接,也催化DNA与RNA之间以及少数RNA之间的连接。
反转录酶(Reversetranscripatase)是以RNA为模板指导三磷酸脱氧核苷酸合成互补DNA(cDNA)的酶。哺乳类C型病毒的反转录酶和鼠类B型病毒的反转录酶都是一条多肽链。鸟类RNA病毒的反转录酶则由两上亚基结构。真核生物中也都分离出具有不同结构的反转录酶。

