0
Describe the roles of checkpoint cyclin CDK and MPF in the cell-cycle control system?
Wiki User
∙ 11y ago
Cyclin is a regulatory protein that a kinase much be attached to. Cyclin gets its name from its cyclically fluctuating concentraion in the cell. Because of this requirement, these kinases are called cyclin-dependent kinases, CDK's. The CDK rises and falls with changes in the concentration of its cyclic partner. The first cyclin-CDK complex discovered was the MPF. The peaks of MPF activity correspond to the peaks of cyclin concentration. MPF stands for maturation-promoting factors. Basically, the rhythmic fluctuations in the abundance and activity of cell cycle control molecules pace the sequential events of the cell cycle. These regulatory molecules are proteins; kinase, and other enzymes. Particular protein kinases give the "go-ahead" signals at the G1 and G2 checkpoints.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What molecules control the cell cycle?
Cyclin dependent kinase
What substances form the cyclin-cycle dependent kinase combinations that control the stages in the cell cycle?
proteins and enzyme
Which cyclin forms the primary Cdkc that controls the G2 stage?
Cyclin A
What is a protein synthesized at specific times during the cell cycle that associates with a kinase to form a catalytically active complex?
A) MPF B) Cdk C) PDGF D) Protein kinase E) cyclin the answer is E, cyclin. AP Bio student.
What is a cyclin and what does it activate?
Cyclin is a protein named because of its fluctuating concentration, and it activates kinase.
What molecules control the cell cycle?
Cyclin dependent kinase
Checkpoint genes encoding protein that stimulate mitosis are called what?
proto-oncogenes
What substances form the cyclin-cyclin dependent kinase combinations that control the stages in the cycle?
proteins and enzyme
What is the category of enzymes that control the cell cycle called?
Cyclin-dependent kinases.
What is the family of molecules that control the cell cycle?
cyclin dependent kinases,CDK's
Where can you buy cyclin from?
Well dah!!! Were everyone else gets cyclin from the cyclin store!
Cell cycle is regulated by?
The timings of the cell cycle are controlled by cyclins (protein complexes) and cyclin-dependent kinases / CDKs (enzymes).The cyclins activate the CDKs, which affect the cell cycle at three important checkpoints:Late in the G1 stage of the cell cycle, triggering the cell to move into the S phase.Late in the G2 stage of the cell cycle, triggering the cell to move into mitosis.The M (metaphase) checkpoint, triggering entry into anaphase.
What substances form the cyclin-cycle dependent kinase combinations that control the stages in the cell cycle?
proteins and enzyme
Which cyclin forms the primary Cdkc that controls the G2 stage?
Cyclin A
What is the name of the proteins that regulate the cell cycle?
protein kinase are the protiens that regulate cell cycle. it has 2 subunits- a)catalytic unit called as cyclin dependent protien kinase (CDK) b) regulatory subunit called as cyclin binding unit
What is a protein synthesized at specific times during the cell cycle that associates with a kinase to form a catalytically active complex?
A) MPF B) Cdk C) PDGF D) Protein kinase E) cyclin the answer is E, cyclin. AP Bio student.
What happens to the Cdk-cyclin A complex at metaphase?
Both cyclin A and Cdk remain undegraded
