Four climate cycles in Vostok ice core

Article Abstract:

Palaeoclimatologists are likely to obtain significant new information from studying the Russian Vostok ice core, which is now thought to cover the past four glacial-interglacial cycles. International research already undertaken indicates that the ice layers thin linearly with depth below 2,755 mt. At 3,139 mt depth, the ice is 340,000 years old. It will soon be possible to obtain a wide range of climate information which is up to around 400,000 years old.

Research, Climatic changes, Climate change, Arctic, Ice

---

Protein kinase C-alpha activates Raf-1 by direct phosphorylation

Article Abstract:

A protein kinase C activator (PKCa) directly induces Raf-1 phosphorylation and activation at several sites. Among them is a serine residue at position 499. Raf-1 and PKCa cooperate in transforming NIH3T3 fibroblast cells, a synergy that requires the Ser499 site. Ser259 is a secondary required site. The molecular mechanism and biological consequences of this Raf-1 activation in NIH3T3 cells is discussed.

Physiological aspects, Protein kinases, Phosphorylation

---

Similar abstracts:

• Abstracts: Specific phosphorylation of SR proteins by mammalian DNA topoisomerase I. Crystal structure of a complex of a type IA DNA topoisomerase with a single-stranded DNA molecule
• Abstracts: Ice-age atmospheric concentration of nitrous oxide from an Antarctic ice core. Merely the tip of the ice core
• Abstracts: Protein kinase C modulates glutamate receptor inhibition of Ca2+ channels and synaptic transmission. A retrograde step forward
• Abstracts: American ecology at the crossroads. Ending incongruence
• Abstracts: Solving problems in endangered species conservation: an introduction to problem orientation. Conserving biodiversity in the real world: professional practice using a policy orientation

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.