Entry
Name
Cell cycle
Description
Mitotic cell cycle progression is accomplished through a reproducible sequence of events, DNA replication (S phase) and mitosis (M phase) separated temporally by gaps known as G1 and G2 phases. Cyclin-dependent kinases (CDKs) are key regulatory enzymes, each consisting of a catalytic CDK subunit and an activating cyclin subunit. CDKs regulate the cell's progression through the phases of the cell cycle by modulating the activity of key substrates. Downstream targets of CDKs include transcription factor E2F and its regulator Rb. Precise activation and inactivation of CDKs at specific points in the cell cycle are required for orderly cell division. Cyclin-CDK inhibitors (CKIs), such as p16Ink4a, p15Ink4b, p27Kip1, and p21Cip1, are involved in the negative regulation of CDK activities, thus providing a pathway through which the cell cycle is negatively regulated.
Eukaryotic cells respond to DNA damage by activating signaling pathways that promote cell cycle arrest and DNA repair. In response to DNA damage, the checkpoint kinase ATM phosphorylates and activates Chk2, which in turn directly phosphorylates and activates p53 tumor suppressor protein. p53 and its transcriptional targets play an important role in both G1 and G2 checkpoints. ATR-Chk1-mediated protein degradation of Cdc25A protein phosphatase is also a mechanism conferring intra-S-phase checkpoint activation.
Class
Cellular Processes; Cell growth and death
BRITE hierarchy
Pathway map
Other DBs
Orthology
K02180 BUB3; cell cycle arrest protein BUB3
K02209 MCM5, CDC46; DNA replication licensing factor MCM5 [EC:5.6.2.3 ]
K02210 MCM7, CDC47; DNA replication licensing factor MCM7 [EC:5.6.2.3 ]
K02212 MCM4, CDC54; DNA replication licensing factor MCM4 [EC:5.6.2.3 ]
K02213 CDC6; cell division control protein 6
K02537 MAD2; mitotic spindle assembly checkpoint protein MAD2
K02603 ORC1; origin recognition complex subunit 1
K02604 ORC2; origin recognition complex subunit 2
K02605 ORC3; origin recognition complex subunit 3
K02606 ORC4; origin recognition complex subunit 4
K02607 ORC5; origin recognition complex subunit 5
K02608 ORC6; origin recognition complex subunit 6
K03094 SKP1, CBF3D; S-phase kinase-associated protein 1
K03348 APC1, ANAPC1; anaphase-promoting complex subunit 1
K03349 APC2, ANAPC2; anaphase-promoting complex subunit 2
K03350 APC3, CDC27; anaphase-promoting complex subunit 3
K03351 APC4, ANAPC4; anaphase-promoting complex subunit 4
K03352 APC5, ANAPC5; anaphase-promoting complex subunit 5
K03353 APC6, CDC16; anaphase-promoting complex subunit 6
K03354 APC7, ANAPC7; anaphase-promoting complex subunit 7
K03355 APC8, CDC23; anaphase-promoting complex subunit 8
K03357 APC10, ANAPC10, DOC1; anaphase-promoting complex subunit 10
K03358 APC11, ANAPC11; anaphase-promoting complex subunit 11
K03359 APC12, CDC26; anaphase-promoting complex subunit 12
K03363 CDC20; cell division cycle 20, cofactor of APC complex
K03364 CDH1, FZR1; cell division cycle 20-like protein 1, cofactor of APC complex
K03456 PPP2R1; serine/threonine-protein phosphatase 2A regulatory subunit A
K03875 SKP2, FBXL1; F-box and leucine-rich repeat protein 1 (S-phase kinase-associated protein 2)
K04377 MYC; Myc proto-oncogene protein
K04382 PPP2C; serine/threonine-protein phosphatase 2A catalytic subunit [EC:3.1.3.16 ]
K04402 GADD45; growth arrest and DNA-damage-inducible protein
K04451 TP53, P53; tumor protein p53
K04500 SMAD2; mothers against decapentaplegic homolog 2
K04501 SMAD4; mothers against decapentaplegic homolog 4
K04503 CCND1; G1/S-specific cyclin-D1
K04681 RBL1; retinoblastoma-like protein 1
K04682 E2F4_5; transcription factor E2F4/5
K04683 TFDP1; transcription factor Dp-1
K04685 CDKN2B, P15, INK4B; cyclin-dependent kinase inhibitor 2B
K04802 PCNA; proliferating cell nuclear antigen
K05868 CCNB1; G2/mitotic-specific cyclin-B1
K06618 RB1; retinoblastoma-associated protein
K06620 E2F3; transcription factor E2F3
K06621 CDKN2A, P16, INK4A; cyclin-dependent kinase inhibitor 2A
K06622 CDKN2C, P18, INK4C; cyclin-dependent kinase inhibitor 2C
K06623 CDKN2D, P19, INK4D; cyclin-dependent kinase inhibitor 2D
K06624 CDKN1B, P27, KIP1; cyclin-dependent kinase inhibitor 1B
K06625 CDKN1A, P21, CIP1; cyclin-dependent kinase inhibitor 1A
K06626 CCNE; G1/S-specific cyclin-E1
K06628 CDC45; cell division control protein 45
K06629 DBF4, ASK; protein DBF4
K06630 YWHAE; 14-3-3 protein epsilon
K06633 PKMYT; membrane-associated tyrosine- and threonine-specific cdc2-inhibitory kinase [EC:2.7.11.1 ]
K06636 SMC1; structural maintenance of chromosome 1
K06637 BUB1B, BUBR1, MAD3L; mitotic checkpoint serine/threonine-protein kinase BUB1 beta [EC:2.7.11.1 ]
K06642 PRKDC; DNA-dependent protein kinase catalytic subunit [EC:2.7.11.1 ]
K06669 SMC3, CSPG6; structural maintenance of chromosome 3 (chondroitin sulfate proteoglycan 6)
K06670 SCC1, MCD1, RAD21; cohesin complex subunit SCC1
K06671 STAG1_2, SCC3, IRR1; cohesin complex subunit SA-1/2
K06672 SCC2, NIPBL; cohesin loading factor subunit SCC2
K06679 MAD1; mitotic spindle assembly checkpoint protein MAD1
K08866 TTK, MPS1; serine/threonine-protein kinase TTK/MPS1 [EC:2.7.12.1 ]
K09389 E2F2; transcription factor E2F2
K09392 TFDP2; transcription factor Dp-2
K09993 CDKN1C, P57, KIP2; cyclin-dependent kinase inhibitor 1C
K10151 CCND2; G1/S-specific cyclin-D2
K10152 CCND3; G1/S-specific cyclin-D3
K10292 FBXO5, EMI1; F-box protein 5
K10500 ZBTB17, MIZ1; zinc finger and BTB domain-containing protein 17
K10727 CDT1; chromatin licensing and DNA replication factor 1
K10779 ATRX; transcriptional regulator ATRX
K11266 MAU2; MAternally affected uncoordination
K11267 PDS5; sister chromatid cohesion protein PDS5
K11268 ESCO, ECO1; N-acetyltransferase [EC:2.3.1.-]
K11273 DDX11, CHL1, CTF1; chromosome transmission fidelity protein 1 [EC:5.6.2.7 ]
K11542 CASC5, KNL1; protein CASC5
K11547 NDC80, HEC1, TID3; kinetochore protein NDC80
K11580 SGOL1; shugoshin-like 1
K11584 PPP2R5; serine/threonine-protein phosphatase 2A regulatory subunit B'
K12456 APC13, ANAPC13; anaphase-promoting complex subunit 13
K13375 TGFB1; transforming growth factor beta-1
K13376 TGFB2; transforming growth factor beta-2
K13377 TGFB3; transforming growth factor beta-3
K13728 MAD2L2; mitotic spindle assembly checkpoint protein MAD2B
K16197 YWHAB_Q_Z; 14-3-3 protein beta/theta/zeta
K16198 YWHAG_H; 14-3-3 protein gamma/eta
K16332 RBL2; retinoblastoma-like protein 2
K17454 E2F1; transcription factor E2F1
K21770 CCNB2; G2/mitotic-specific cyclin-B2
K21771 CCNB3; G2/mitotic-specific cyclin-B3
K22399 TRIP13; pachytene checkpoint protein 2
K23605 SMAD3; mothers against decapentaplegic homolog 3
K25163 WAPL; wings apart-like protein
K25228 APC15, ANAPC15; anaphase-promoting complex subunit 15
K25229 APC16, ANAPC16; anaphase-promoting complex subunit 16
K26093 MAD2L1BP; MAD2L1-binding protein
K26116 MTBP; Mdm2-binding protein
Reference
Authors
Matsuoka S, Yamaguchi M, Matsukage A
Title
D-type cyclin-binding regions of proliferating cell nuclear antigen.
Journal
J Biol Chem 269:11030-6 (1994)
Reference
Authors
Welch PJ, Wang JY
Title
A C-terminal protein-binding domain in the retinoblastoma protein regulates nuclear c-Abl tyrosine kinase in the cell cycle.
Journal
Reference
Authors
Macaluso M, Montanari M, Giordano A
Title
Rb family proteins as modulators of gene expression and new aspects regarding the interaction with chromatin remodeling enzymes.
Journal
Reference
Authors
Cobrinik D
Title
Pocket proteins and cell cycle control.
Journal
Reference
Authors
Boutros R, Lobjois V, Ducommun B
Title
CDC25 phosphatases in cancer cells: key players? Good targets?
Journal
Reference
Authors
Diehl JA, Cheng M, Roussel MF, Sherr CJ
Title
Glycogen synthase kinase-3beta regulates cyclin D1 proteolysis and subcellular localization.
Journal
Reference
Authors
Klein EA, Assoian RK
Title
Transcriptional regulation of the cyclin D1 gene at a glance.
Journal
Reference
Authors
Sherr CJ, Roberts JM
Title
CDK inhibitors: positive and negative regulators of G1-phase progression.
Journal
Reference
Authors
Shi Y, Massague J.
Title
Mechanisms of TGF-beta signaling from cell membrane to the nucleus.
Journal
Reference
Authors
Kamura T, Hara T, Kotoshiba S, Yada M, Ishida N, Imaki H, Hatakeyama S, Nakayama K, Nakayama KI
Title
Degradation of p57Kip2 mediated by SCFSkp2-dependent ubiquitylation.
Journal
Reference
Authors
Bond M, Sala-Newby GB, Wu YJ, Newby AC
Title
Biphasic effect of p21Cip1 on smooth muscle cell proliferation: role of PI 3-kinase and Skp2-mediated degradation.
Journal
Reference
Authors
Harris SL, Levine AJ.
Title
The p53 pathway: positive and negative feedback loops.
Journal
Reference
Authors
Vogelstein B, Lane D, Levine AJ
Title
Surfing the p53 network.
Journal
Reference
Authors
Smith ML, Chen IT, Zhan Q, Bae I, Chen CY, Gilmer TM, Kastan MB, O'Connor PM, Fornace AJ Jr
Title
Interaction of the p53-regulated protein Gadd45 with proliferating cell nuclear antigen.
Journal
Reference
Authors
Petersen BO, Lukas J, Sorensen CS, Bartek J, Helin K
Title
Phosphorylation of mammalian CDC6 by cyclin A/CDK2 regulates its subcellular localization.
Journal
Reference
Authors
Sheu YJ, Stillman B
Title
Cdc7-Dbf4 phosphorylates MCM proteins via a docking site-mediated mechanism to promote S phase progression.
Journal
Reference
Authors
Martinez AM, Afshar M, Martin F, Cavadore JC, Labbe JC, Doree M
Title
Dual phosphorylation of the T-loop in cdk7: its role in controlling cyclin H binding and CAK activity.
Journal
Reference
Authors
Lolli G, Johnson LN
Title
CAK-Cyclin-dependent Activating Kinase: a key kinase in cell cycle control and a target for drugs?
Journal
Reference
Authors
Musacchio A, Salmon ED
Title
The spindle-assembly checkpoint in space and time.
Journal
Reference
Authors
Uhlmann F
Title
Chromosome cohesion and separation: from men and molecules.
Journal
Reference
Authors
Stegmeier F, Amon A
Title
Closing mitosis: the functions of the Cdc14 phosphatase and its regulation.
Journal
Reference
Authors
Moustakas A, Kardassis D
Title
Regulation of the human p21/WAF1/Cip1 promoter in hepatic cells by functional interactions between Sp1 and Smad family members.
Journal
Reference
Authors
de Boer HR, Guerrero Llobet S, van Vugt MA
Title
Controlling the response to DNA damage by the APC/C-Cdh1.
Journal
Reference
Authors
Qiao X, Zhang L, Gamper AM, Fujita T, Wan Y
Title
APC/C-Cdh1: from cell cycle to cellular differentiation and genomic integrity.
Journal
Related pathway
ko04120 Ubiquitin mediated proteolysis