- Protein Name
- Cyclin-dependent kinase 4
- Gene Name
- CDK4
- Organism
-
Homo sapiens
- Function
- Ser/Thr-kinase component of cyclin D-CDK4 (DC) complexes that phosphorylate and inhibit members of the retinoblastoma (RB) protein family including RB1 and regulate the cell-cycle during G(1)/S transition. Phosphorylation of RB1 allows dissociation of the transcription factor E2F from the RB/E2F complexes and the subsequent transcription of E2F target genes which are responsible for the progression through the G(1) phase. Hypophosphorylates RB1 in early G(1) phase. Cyclin D-CDK4 complexes are major integrators of various mitogenenic and antimitogenic signals. Also phosphorylates SMAD3 in a cell-cycle-dependent manner and represses its transcriptional activity. Component of the ternary complex, cyclin D/CDK4/CDKN1B, required for nuclear translocation and activity of the cyclin D-CDK4 complex.
Site |
Maximum Consensus Site Population |
Minimum Consensus Site Population |
Median Consensus Site Population |
MPP |
2 |
2 |
2.0 |
DFG |
30 |
15 |
22.5 |
PIF |
22 |
16 |
19.0 |
EDI |
27 |
2 |
14.0 |
MT3 |
20 |
4 |
13.0 |
AAS |
11 |
10 |
10.5 |
LBP |
20 |
7 |
8.0 |
PDIG |
4 |
4 |
4.0 |
ATP |
20 |
16 |
17.5 |
PDB ID |
Maximum Consensus Site Population |
MPP site |
DFG site |
PIF site |
DRS site |
DEF site |
EDI site |
MT3 site |
AAS site |
LBP site |
CMP site |
PDIG site |
ATP site |
PMP site |
Total Druggable Structures per Site |
0 |
1 |
2 |
0 |
0 |
4 |
2 |
0 |
1 |
0 |
0 |
5 |
0 |
5FWM
|
0 |
0 |
0 |
0 |
0 |
17 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5FWK
|
0 |
0 |
0 |
0 |
0 |
16 |
0 |
0 |
8 |
0 |
0 |
0 |
0 |
2W9F
|
0 |
0 |
0 |
0 |
0 |
0 |
20 |
0 |
7 |
0 |
0 |
17 |
0 |
2W9Z
|
2 |
0 |
0 |
0 |
0 |
19 |
14 |
0 |
0 |
0 |
0 |
16 |
0 |
3G33
|
2 |
0 |
0 |
0 |
0 |
27 |
11 |
0 |
0 |
0 |
4 |
18 |
0 |
2W96
|
0 |
15 |
22 |
0 |
0 |
5 |
15 |
11 |
20 |
0 |
0 |
18 |
0 |
5FWL
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
10 |
0 |
0 |
0 |
0 |
0 |
2W99
|
0 |
0 |
16 |
0 |
0 |
9 |
17 |
0 |
0 |
0 |
0 |
20 |
0 |
AFP11802
|
0 |
30 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |