紧急求助!!!!!!!!!!!!!!!!!!!!!!

1.哪些蛋白可称为G蛋白?
2.哪些细胞成分消耗ATP?
3.叶绿体.线粒体等细胞器标志性酶是什么?
4.顺式作用援建因子,反式作用援建因子是什么?

1.哪些蛋白可称为G蛋白?
G-protein
They serve as second messengers or transducers of the receptor-initiated response to intracellular elements such as enzymes to initiate an effect. They are also mediators of activated cell-surface receptors and their enzymes or of ion channels.

They are responsible for activating a chain of events that alters the concentration of intracellular signaling molecules such as cyclic AMP and calcium. In turn, these intracellular messengers alter the behaviour of other target proteins within the cell.

These proteins have a high affinity for guanine nucleotides and hence are named \"G\" proteins.

http://cancerweb.ncl.ac.uk/cgi-bin/omd?query=G+protein

2.哪些细胞成分消耗ATP?
核糖体、粗面内质网、细胞核、线粒体、叶绿体。

3.叶绿体.线粒体等细胞器标志性酶是什么?
自己看书！

4.顺式作用援建因子,反式作用援建因子是什么?
援建还是元件？请写出英文。