第一信使

细胞外钙调素可能作为多肽第一信使，调节细胞增殖、花粉萌发、特定基因表达等生理过程。

As a possible peptide primary messenger , extracellular calmodulin ( CaM ) may regulate processes such as cell proliferation , pollen germination and expression of some genes .

推测在自然情况下，保卫细胞内源胞外钙调素可能作为胞外第一信使和其它信号分子一起调节气孔的开关运动，而且可能在环境刺激与细胞响应之间起重要作用。

Therefore under natural conditions , the endogenous extracellular CaM of guard cells might regulate stomatal movements as a primary messenger together with other signal molecules , and might be an important linkage between environmental stimuli and cell responses .

并应用免疫组化法和放射性配基结合分析法观察了电针对SCN内第一信使介质5-HT及5-HT7受体功能的调节作用。

Moreover the regulating effects of electro-acupuncture on the first signal conduction transmitters in the suprachiasmatic nucleus ( SCN ) were detected by using radioligand binding assay of receptors and immuno-histo-chemical method .

环腺苷酸（cAMP），是环状核苷酸中的一种，具有多种生物学活性，被称为激素作用中的第二信使（相对激素为第一信使而言）。

The 3 ' , 5 ' - cyclic adenosine monophosphate ( cAMP ) is a kind of cyclic terminal nucleotides . It has many kinds of biological functions and is named " the second messenger "( hormones are the first messenger comparatively ) .

胞外Ca~（2+）信号&动植物中的第一信使

Extracellular Ca ~ ( 2 + ) signaling & first messenger in animals and plants

植物细胞外多肽信使已经被证实是植物信号转导中重要的第一信使。

It has been proved that extracellular polypeptides of plant are important signals in cell transduction .

这些受体蛋白的克隆，使人们确信Ca2+在细胞中可以发挥第一信使的功能。

Thus , the cloning of these receptors has prompted the consideration of Ca2 + also functioning as a ' first messenger ' in animals and plants .