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 signifying by binomial nomenclature, Q What is signifying by binomi...

Q What is signifying by binomial nomenclature and what are its basic rules? Scientific nomenclature of a species must have at least two names one that classifies it as genus an

Foetal maceration and mummification, Foetal maceration and mummification ...

Foetal maceration and mummification Foetal mummification occurs when the foetus dies in the uterus in the absence of air and bacterial contamination and the cervix remains tig

Explain the absorption of protein, Explain the Absorption of Protein? A...

Explain the Absorption of Protein? Although single amino acids are liberated in the intestinal contents, there is insufficient power in the enzymes of the pancreatic juice to r

Give three examples of abiotic factors, Give three examples of abiotic fact...

Give three examples of abiotic factors and explain how they interact. Abiotic factors contain temperature, humidity, pH, salinity, O 2 concentration, amount of sunlight, avail

What are universal donors, What are universal donors and universal recipien...

What are universal donors and universal recipients concerning the ABO blood system? Universals donors of the ABO blood type system are the individuals of the type O. Type O blo

Percentage ratio of total solids and water in honey, Q. Percentage ratio of...

Q. Percentage ratio of total Solids and Water in honey? Most genuine honeys contain 13-23 per cent of water. The total solids or moisture can be estimated by drying in a vacuu

Explain fontan operation and ross operation in heart dieases, Explain fonta...

Explain fontan operation and ross operation in heart dieases? Fontan Operation: The Fontan principle involves redirecting the whole systemic return into the lungs bypassing t

What are the typical vegetation of temperate forests, What are the typical ...

What are the typical vegetation and the typical fauna of the temperate forests? In the temperate forest deciduous trees predominate. Various Mammals are found in great number,

Cell cycle, what is the process of cell cycle?

what is the process of cell cycle?

In what ways does over-grazing lead to soil erosion, In what ways does over...

In what ways does over-grazing lead to soil erosion? Over-grazing leads to erosion because (i) the animals delete all the vegetation, so exposing the soil to heavy rain, (ii) t

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