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Increases in the enzymatic activity of some protein kinases important for the regulation of the cell cycle are due to?
the expression of cyclins which pair with specific cyclin-dependent kinases (cdk). Cyclins are expressed at specific times during the cell cycle and regulate the activity of cdk's.
What is of WAF-1 gene?
WAF1is also known as cyclin-dependent kinase inhibitor 1 or CDK-interacting protein 1. It is a protein that in humans is encoded by the cdkn1Agene located on chromosome 6. p-21, the product of waf gene is the inhibitor of cdk4/cyclin-D-1 complex. It inactivates cdk4/cyclin-D-1 complex and the cell cycle is arrested at G1 phase.
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
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 kinds of factors regulate a cells progress through the cell cycle?
There are no regulating factors. Mitosis itself is a process that takes time. The cells must go through various stages before they even enter their mitotic phase of the cycle. Once in the mitotic phase, even more phases before mitosis is complete. It would take me hours to thoroughly get into each of the stages of mitosis.
What happens to the Cdk-cyclin A complex at metaphase?
Both cyclin A and Cdk remain undegraded
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 the family of molecules that control the cell cycle?
cyclin dependent kinases,CDK's
Which of the following is a protein synthesized at specific times during the cell cycle that associates with a kinase to form a catalytically active complex?
cdk
Describe the roles of checkpoint cyclin CDK and MPF in the cell-cycle control system?
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.
What is the protein that regulate the timing of the cell cycle in eukaryotic cells known as?
CDK. Cyclin dependent kinases.
What is the family of proteins that regulate the cell cycle?
cyclins If there are questions that are NOT answered and is unkown.. I strongly suggest yahooanswers instead:}
The initiation of the s phase and the m phase of the sell cycle depends on a pair of biochemicals called?
Cdk's and cyclin
Describe the relative concentrations of MPF and its constituent molecules throughout the cell cycle?
MPF - complex of cyclin and cdk that initiates mitosis by phosphorylating protein and other kinases; highest concentration at metaphase Cdk - levels are constant throughout the cell cycle Cyclin - levels vary because it is broken down by MPF after anaphase
Increases in the enzymatic activity of some protein kinases important for the regulation of the cell cycle are due to?
the expression of cyclins which pair with specific cyclin-dependent kinases (cdk). Cyclins are expressed at specific times during the cell cycle and regulate the activity of cdk's.
What checks for cell damage during the Cell Cycle?
During the cell cycle CDK and Cyclin check for cell damage and oversized cells.
What are 2 key molecules that help to control and coordinate cell division?
The key molecules that control and coordinate cell division are called CDK and Cyclin.
