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

Extremes of heat and cold, Extremes of Heat and Cold Deserts are region...

Extremes of Heat and Cold Deserts are regions of aridity with rainfall of less than 20 cm per year and the soil, though L, fertile, is too porous to retain any water. In summer

Biosphere, The biosphere is composed of all living organism. This sphere in...

The biosphere is composed of all living organism. This sphere includes all the microorganism, plants and animals of earth. In fact biosphere involves interaction of living beings w

What are the major biological processes, Q. What are the major biological p...

Q. What are the major biological processes in which calcium participates? Calcium is present in approximately all cells and has various functions. Calcium has an significant ro

What are the functions of polypeptide chains, Q. Since among the 64 codons ...

Q. Since among the 64 codons of mRNA 61 codify amino acids that form polypeptide chains what are the functions of the three remaining codons? Since there are 20 amino acids and

Predominant feature of steatorrhoea, Q. Predominant feature of steatorrhoea...

Q. Predominant feature of steatorrhoea? A predominant feature is delayed and defective absorption of fat, which results in bulky stools containing large quantities of fat (know

Theory of embryology - germ layer theory , GER M LAYER THEORY - Propos...

GER M LAYER THEORY - Proposed by Pander, studied chick embryo development. Coined the term ectoderm, mesoderm & endoderm.

Design a microcontroller-based system, Suppose you are in charge of designi...

Suppose you are in charge of designing a microcontroller-based system for a packet processing application. These are high speed internet packets from the PC that are going to be pr

Periodic variations in light-diurnal and seasonal, Periodic Variations in L...

Periodic Variations in Light-Diurnal and Seasonal We know that rotation of the earth on its axis accounts for day-to-night variations in the amount of radiations falling at a g

Explain gellan gum, Explain Gellan Gum Gellan is an exopolysaccharide c...

Explain Gellan Gum Gellan is an exopolysaccharide consisting of  β-D-glucose,  β-D-glucuronic acid,  α-L-rhamnose with acetate and glycerate groups, produced by the bacterium S

What are the signs used in acute pericarditis, Q. What are the Signs used i...

Q. What are the Signs used in acute pericarditis? • Pericardial friction rub is pathognomonic of pericarditis. It is heard as a phasic scatching sound. It may vary with phases

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