Cyclin-dependent kinase inhibitor protein

Cyclin-dependent kinase inhibitor

Structure of the p27Kip1 cyclin-dependent-kinase inhibitor bound to the cyclin A-Cdk2 complex.^[1]

Identifiers

Symbol

CDI

Available protein structures:
Pfam	structures
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary

This article is about the cell cycle protein. For the medical therapy, see CDK inhibitor.

A cyclin-dependent kinase inhibitor protein is a protein which inhibits cyclin-dependent kinase. Several function as tumor suppressor genes. Cell cycle progression is negatively controlled by cyclin-dependent kinases inhibitors (called CDIs, CKIs or CDKIs). CDIs are involved in cell cycle arrest at the G₁ phase.

Examples

Protein	Gene	Interacts with
p16	CDKN2A	Cyclin-dependent kinase 4, Cyclin-dependent kinase 6
p15	CDKN2B	Cyclin-dependent kinase 4
p18	CDKN2C	Cyclin-dependent kinase 4, Cyclin-dependent kinase 6
p19	CDKN2D	Cyclin-dependent kinase 4, Cyclin-dependent kinase 6
p21 / WAF1	CDKN1A^[2]	Cyclin E1/Cyclin-dependent kinase 2
p27	CDKN1B	Cyclin D3/Cyclin-dependent kinase 4, Cyclin E1/Cyclin-dependent kinase 2
p57	CDKN1C	Cyclin E1/Cyclin-dependent kinase 2
	CDKN3	Cyclin-dependent kinase 2

References

↑ Russo AA, Jeffrey PD, Patten AK, Massagué J, Pavletich NP (July 1996). "Crystal structure of the p27Kip1 cyclin-dependent-kinase inhibitor bound to the cyclin A-Cdk2 complex". Nature 382 (6589): 325–31. doi:10.1038/382325a0. PMID 8684460.
↑ Hoshino R, Chatani Y, Yamori T, Tsuruo T, Oka H, Yoshida O, Shimada Y, Ari-i S, Wada H, Fujimoto J, Kohno M (January 1999). "Constitutive activation of the 41-/43-kDa mitogen-activated protein kinase signaling pathway in human tumors". Oncogene 18 (3): 813–22. doi:10.1038/sj.onc.1202367. PMID 9989833.

External links

Cyclin-Dependent Kinase Inhibitor Proteins at the US National Library of Medicine Medical Subject Headings (MeSH)

Intracellular signaling peptides and proteins

MAP

see MAP kinase pathway

Calcium

G protein

Heterotrimeric

cAMP:	Heterotrimeric G protein Gs/Gi Adenylate cyclase cAMP 3',5'-cyclic-AMP phosphodiesterase Protein kinase A

cGMP:	Transducin Guanylate cyclase cGMP 3',5'-cyclic-GMP phosphodiesterase Protein kinase G

G alpha subunit G_α GNAO1 GNAI1 GNAI2 GNAI3 GNAT1 GNAT2 GNAT3 GNAZ GNAS GNAL GNAQ GNA11 GNA12 GNA13 GNA14 GNA15/GNA16

G beta-gamma complex G_β GNB1 GNB2 GNB3 GNB4 GNB5 G_γ GNGT1 GNGT2 GNG2 GNG3 GNG4 GNG5 GNG7 GNG8 GNG10 GNG11 GNG12 GNG13 BSCL2

G protein-coupled receptor kinase AMP-activated protein kinase

Monomeric

Cyclin

Lipid

Other protein kinase

Serine/threonine:	Casein kinase 1 2 eIF-2 kinase EIF2AK3 Glycogen synthase kinase GSK1 GSK2 GSK-3 GSK3A GSK3B IκB kinase CHUK IKK2 IKBKG Interleukin-1 receptor-associated kinase IRAK1 IRAK2 IRAK3 IRAK4 Lim kinase LIMK1 LIMK2 p21-activated kinases PAK1 PAK2 PAK3 PAK4 Rho-associated protein kinase ROCK1 ROCK2 Ribosomal s6 kinase RPS6KA1

Tyrosine:	ZAP70 Focal adhesion protein-tyrosine kinase PTK2 PTK2B BTK

both	Dual-specificity kinase

Other protein phosphatase

Serine/threonine:	Protein phosphatase 2

Tyrosine:	protein tyrosine phosphatase: Receptor-like protein tyrosine phosphatase Sh2 domain-containing protein tyrosine phosphatase

both:	Dual-specificity phosphatase

Apoptosis

see apoptosis signaling pathway

GTP-binding protein regulators

see GTP-binding protein regulators

Other

see also deficiencies of intracellular signaling peptides and proteins

Cell cycle proteins

Cyclin

A (A1, A2)
B (B1, B2, B3)
D (D1, D2, D3)
E (E1, E2)

CDK

CDK inhibitor

INK4a/ARF (p14arf/p16, p15, p18, p19)
cip/kip (p21, p27, p57)

P53 p63 p73 family

Other

Phases and
checkpoints

Interphase	G₁ phase S phase G₂ phase

M phase	Mitosis (Preprophase Prophase Prometaphase Metaphase Anaphase Telophase) Cytokinesis

Cell cycle checkpoints	Restriction point Spindle checkpoint Postreplication checkpoint

Other cellular phases	Apoptosis G₀ phase Meiosis

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