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- 积分
- 312
- 威望
- 312
- 包包
- 719
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Cells can communicate with each other through the
[- T% f6 i: K- N0 k) {# j/ nsecretion of cytokines, small (8–30 kDa) soluble proteins.' R8 F) ~! z. ~$ V3 E) W/ O
To date, roughly 20 cytokines have been identified. Upon
9 S. w# A0 r& m7 H4 V3 ybinding their cognate receptors, receptor-associated Janus
- a5 i; O( k- E3 G3 Q" |5 I9 wKinases (JAKS) phosphorylate tyrosine residues of the
|# ?& _) U8 W' Jligand-bound receptors, as well as interacting Signal+ I% ?/ g* s1 ?5 d0 o$ b
Transducers and Activators of Transcription (STATs).Tyrosine phosphorylated STATs form homodimers, shuttle9 s8 t* a; R Z9 V- I( B) }! L
to the nucleus and participate in transcriptional regulation2 j* u, e5 Q4 r
of a variety of genes& e3 t& u/ f+ }! G. V* X6 \% C" a
7 g! t+ K: R/ `+ O8 u7 f" C$ v: H
我标记的这一句，是什么意思呢 ，为什么我连语法结构都分析不过来呢，总感觉少了点什么！希望热心人给予解答！ |
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发表于 2011-5-30 15:42
