Cemeb

Sharing some thing is better than keeping up-to our self, thus the YouTube video that is posted at this place I am going to share through my relatives and mates.

pletcherhzc

It should seem obvious that the processes that drive a cell through the cell cycle must be highly regulated so as to ensure that the resultant daughter cells are viable and each contains the complement of DNA found in the original parental cell. There are many "parts" to the systems that control the transit through a eukaryotic cell cycle. These "parts" include mechanisms to control the timing of events so that each individual process is turned on and off at the appropriate time, mechanisms to initiate each event in the correct order and to also ensure that each event is triggered only once per cell cycle, controls to ensure events occur in a linear, irreversible direction, redundancy, or back-ups to ensure the cycle functions properly even in the context of some malfunctioning parts, and systems that are adaptable so that cell cycle events can be modified in the context of different cell types and/or environmental conditions. Many of the most important discoveries about the mechanisms that control events of the cell cycle were elucidated using yeasts which are single cell eukaryotes. By analysis of various mutants that inactivated genes encoding essential components of cell cycle control systems in yeast many important control genes were identified. These genes were identified as cell division cycle genes or cdc genes. Thus, many cell cycle control genes in mammalian cells are also called cdc genes. Much of the control of the progression through the phases of a cell cycle are exerted at checkpoints. There are many such checkpoints but the two most critical are those that occur near the end of G1 prior to S-phase entry and those near the end of G2 prior to mitosis. As indicated above, there is the need for cell cycle control mechanisms to exert their influences at specific times during each transit through a cell cycle. The heart of this timing control is the responsibility of a family of protein kinases that are called cyclin-dependent kinases, CDKs. The kinase activity of these enzymes rises and falls as the cell progresses through a cell cycle. Different CDKs operate at different points in the cell cycle. As would be expected, the oscillating changes in the activity of CDKs leads to oscillating changes in the phosphorylation of various intracellular proteins. These phosphorylations alter the activity of the modified proteins which then effect changes in events of the cell cycle. The cyclical activity of each CDK is controlled by a complex series of proteins, the most important of which are the cyclins, hence the name of the enzymes as cyclin-dependent kinases. The CDKs are absolutely dependent upon their interaction with the cyclins for activity. Unless they are tightly bound CDKs have no kinase activity. The cyclins were originally idenitified because they undergo a cycle of synthesis and degradation at specific points in each cell cycle. Thus, whereas the levels of the various CDKs remain fairly constant throughout the cell cycle, their activities changes in concert with the fluctuations of the cyclins. Four different classes of cyclins have been defined on the basis of the stage of the cell cycle in which they bind and activate CDKs. These four classes are G1-cyclins, G1/S-cyclins, S-cyclins, and M-cyclins. The cyclin nomenclature and associated CDK in mammalian cells are listed in the following Table.

Melanie_Texas

ould also do your (wonderful) thing around the blogosphere for a while (just not always here). Keep the juices flowing, continue to help people, foster even greater community growth, and not be an (ugh) static single target.

Victoria_West_Virginia

That aside, I think that a multiple-contributor blog would give you support and provide some other perspectives. You could combine this with your ideas on coaching/ghostwriting and work with 'intern' contributors to hone their skills, see their work supplying your site, and give them the tools they need to take your philosophies and understanding out on their own tangents. It might give you a regular supply of fresh, new writers and keep things going while allowing you to step back a little. (If you did go with the intern idea, drop me a line, will you? *g*)

Bailey_South_Carolina

Oodles of bloggers great and small would give a #1 Technorati rank (or insert personal thing of inestimable value here) to be able to host Kathy Sierra as a guest blogger. (Myself included.)

Samantha_Nebraska

I do hesitate to run with the other commenters that say you should monetize this, but you should make it at least a part-time passion where you are getting to stretch out on the things you write about, and then allow experiences to craft other posts.

Anna_Ohio

In doing this blog and thinking about this stuff, have you ever had any ideas for what kinds of tools (software, that is) that people could use to do things like share creative ideas in groups, create customer community, etc. etc.?

Lily_South_Dakota

I like the idea of a private blog if getting the RSS and reading posts was as simple as public. If there are too many hoops just to get notice of and read a single post it will get frustrating.

Gianna_Hawaii

I was thinking the same thing about Alexa as there was quite a lot of movement. They might have readjusted their adjustment for “technology skew” - or what ever it was….

Jess.Effolalty

Thank you.