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BSI Lecture 21 and 22
BSI Lecture 21 and 22
32
Biology
Graduate
09/16/2013

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Term
Cyclin-dependent kinases abbreviation
Definition
CdKs
Term
CdKs stand for:
Definition
Cyclin-dependent kinases
Term
CdK's phosphorylate key proteins involved in the _____
Definition
cell cycle
Term
Phosphorylate key proteins involved in the cell cycle
Definition
CdKs
Term
Must be bound to cyclins in order to be activd
Definition
CdKs
Term
CdKs must be bound to ____ in order to be active
Definition
cyclins
Term
cdKs must be bound to cyclins in order to be ____
Definition
active
Term
When cyclins are degraded the ___ become inactive
Definition
CdK
Term
cyclins degraded by the:
Definition
ubiquitin-proteasome system
Term
___ are degreaded by the Ubiquitin-proteasome system
Definition
Term
There are a variety of CdKs and cyclins that regulate:
Definition
The different phases of the cell cycle
Term
The cyclin-CdK complex are called:
Definition
G1-CDK, G1/S-CDK, S-CdK, and M-CdK
Term
the _____ are called G1-CDK, G1/S-CDK, S-CdK, and M-CdK
Definition
Cyclin-CdK complex
Term
Aside from cyclin binding, CdKs also require _____ / ____ to be fully active
Definition
Phosphorylation/dephosphorylation
Term
Aside from cyclin binding, CdKs also require phosphorylation/dephosphorylation to:
Definition
be fully active
Term
Early in G1 no _____ are active
Definition
cyclin-CdKs
Term
In mammals an external cellular signal (mitogen) is required to:
Definition
initiate the cell cycle
Term
In mammals an external cellular signal (____) is required to initiate the cell cycle.
Definition
mitogen
Term
In _____ an external cellular signal (mitogen) is required to initiate the cell cycle.
Definition
Term
The mitogen stimulated activity of ____ and ____ which leads to transition into S phase and activation of S-CdK
Definition
G1-CdK and G1/S-CdK
Term
The mitogen stimulated activity of G1-CdK and G1/S-CdK which leads to:
Definition
Transition into S phase and activation of S-CdK
Term
M-CdK activity is responsible for transition through the _____
Definition
M-phase
Term
___ activity is responsible for transition though the M-phase
Definition
M-CdK
Term
______ signaling leads to increased activity of G1-CdK and G1/S-CdK
Definition
Mitogen
Term
Mitogen signaling leads to increased activity:
Definition
G1-CdK and G1/-CdK
Term
Rb phosphorylation leads to increased activity of E2F and entry into _____
Definition
S-phase
Term
_____ leads to increased activity of E2F and entry into S-phase
Definition
Rb phosphorylation
Term
Rb phosphorylation leads to increased activity of ____ and entry into S-phase
Definition
E2F
Term
E2F is a transcription factor that increases expression of proteins needed for _____
Definition
S-phase
Term
____ is a transcription factor that increases expression of proteins needed for S-Phase
Definition
E2F
Term
E2F is a ______ that increases expression of proteins needed for S-Phase
Definition
transcription factor
Term
How does activation of G1-CDK and G1/S-CDK lead to activation of S-CDK and entra into S phase?
Definition
1) G1-CDK and G1/S-CDK phosphorylates Rb
2) Phosphorylation of Rb leads to the release of E2F
3) E2F is a transcription factor that regulates the transcription of genes necessary for S-phase
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