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

List the major chemical changes occurring in food, Q. List the major chemic...

Q. List the major chemical changes occurring in food? The major chemical changes occurring in food are lipid oxidation leading to rancidity, loss of vitamins and degradation

Explain about the pulmonary and respiratory system, Explain about the Pulmo...

Explain about the Pulmonary and Respiratory System? With aging the chest wall becomes stiffer and less compliant and the muscular force of the diaphragm is reduced causing less

Are there differences between the male and female skeletons, Q. Are there d...

Q. Are there differences between the male and female skeletons? Many general differences exist between female and male skeletons. Male skeleton is normally larger and heavier t

Estimate the molar mass of protein, Estimate the molar mass of protein? ...

Estimate the molar mass of protein? An aqueous solution of the protein bovine serum albumin, containing 2:00 *10 -2 g of protein per cubic centimeter, has an osmotic pressure

What are the benefits of migration, What are the Benefits of migration ...

What are the Benefits of migration Eg: Need to leave Alaska due to harsh weather conditions (statement that birds are escaping NZ winter not acceptable). Longer day

What is diatoms, What is Diatoms? Bacillariophyta are commonly known as ...

What is Diatoms? Bacillariophyta are commonly known as diatoms because of their unique structure. These unicellular photosynthetic organisms are composed of two overlapping glas

Why do some trees lose their green color in the autumn, Why do some trees l...

Why do some trees lose their green color in the autumn? In autumn days become shorter and nights longer therefore there is a reduction of the photosynthesis rate and some plant

Symptoms of angina pectoris, Q. Symptoms of Angina Pectoris? The pain o...

Q. Symptoms of Angina Pectoris? The pain of angina is usually over the center of the chest (below the sternum) but can be felt from epigastrum to the jaw and arms. It is brough

Internal structure of mammalian heart, INTERNA L STRUCTURE - Wall o...

INTERNA L STRUCTURE - Wall of auricles are thin than wall of ventricles, because they have to push the blood to ventricles only situated close to them. Walls of ventricl

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