Maturation promoting factor, Biology

Assignment Help:

• Cyclins accumulate during the G1, S, and G2 phases of the cell cycle.
• By the G2 checkpoint (the red bar in the figure), enough Cyclin is available to form MPF complexes (aggregations of Cdk and Cyclin) which initiate mitosis.

o MPF apparently functions by phosphorylating key proteins in the mitotic sequence.

• Later in mitosis, MPF switches itself off by initiating a process which leads to the destruction of Cyclin

o Cdk, the non-Cyclin part of MPF, persists in the cell as an inactive form until it associates with new Cyclin molecules synthesized during Interphase of the next round of the cell cycle. 


Related Discussions:- Maturation promoting factor

What is an effect of increased temperature, What is the effect of increased...

What is the effect of increased temperature on a non enzyme catalyzed reaction? What are the effects of increased temperature on an enzyme catalyzed reaction?

How plants classify to photoperiodism-based flowring, How do the plants cla...

How do the plants classify according to their photoperiodism-based flowering? According to their photoperiodism-based the flowering plants classify as long-day plants, those th

Cat assay, CAT assay  is an enzyme assay. CAT stands for the chloramphenico...

CAT assay  is an enzyme assay. CAT stands for the chloramphenicol acetyl transferase, a bacterial enzyme which inactivates the chloramphenicol by acetylating it. CAT assays are man

How ph affect the initial rate of an enzyme, How does pH affect the initial...

How does pH affect the initial rate of an enzyme -catalyzed reaction?

Explain natural history of mitral stenosis, Q. Explain Natural History of M...

Q. Explain Natural History of Mitral Stenosis ? Untreated, mitral stenosis is a serious disease with observed 10-year mortality of 70-80 per cent in sy

Name the alpha-islet cells of the pancreas, Person X is a healthy human who...

Person X is a healthy human who has volunteered to take experimental drug Y.  Person X has a normal dinner at 6 PM on April 1 and then does not eat for 12 hours.  At 5 PM on A

Cyanide - enzyme-activity control, Cyanide - Enzyme-activity Control P...

Cyanide - Enzyme-activity Control Plants generate cyanide from cyanogenic glucides and histidines. Ethylene biosynthesis is also accompanied by cyanide production. Nitrate red

What is an ecosystem?, What is an ecosystem? An ecosystem is the system...

What is an ecosystem? An ecosystem is the system that composed of biotic and abiotic factors in interaction.

Phospholipids exhibit important biological functions, Phospholipids exhibi...

Phospholipids exhibit  important biological functions. They are: a)  increase  the rate of fatty acid oxidation b)  act as inorganic ion carrier across the membrane c) hel

What are the three cell types that form the osseous tissue, What are the th...

What are the three main cell types that form the osseous tissue? What are their functions? The three major cell types of the osseous tissue are the osteoblasts, the osteocytes

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd