Entry
Name
Cell cycle - Heterocephalus glaber (naked mole-rat)
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
Ortholog table
Other DBs
Organism
Heterocephalus glaber (naked mole-rat) [GN:
hgl ]
Gene
101704740 Myc; v-myc avian myelocytomatosis viral oncogene homolog [KO:K04377 ]
101714018 Cdt1; chromatin licensing and DNA replication factor 1 [KO:K10727 ]
101703037 Ticrr; TOPBP1 interacting checkpoint and replication regulator [KO:K26117 ]
101720117 Ywhaq; tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein theta [KO:K16197 ]
101721954 Ywhaz; tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein zeta [KO:K16197 ]
101705080 Ywhab; tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein beta [KO:K16197 ]
101717238 Ywhae; tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein epsilon [KO:K06630 ]
101716439 Ywhag; tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein gamma [KO:K16198 ]
101709704 Ywhah; tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein eta [KO:K16198 ]
101720068 Esco2; establishment of sister chromatid cohesion N-acetyltransferase 2 [KO:K11268 ] [EC:2.3.1.-]
101718018 Esco1; establishment of sister chromatid cohesion N-acetyltransferase 1 [KO:K11268 ] [EC:2.3.1.-]
101722244 Ppp2r1b; protein phosphatase 2 scaffold subunit Abeta [KO:K03456 ]
101703470 Ppp2r1a; protein phosphatase 2 scaffold subunit Aalpha [KO:K03456 ]
101726315 Ppp2r5c; protein phosphatase 2 regulatory subunit B'gamma [KO:K11584 ]
101711583 Ppp2r5e; protein phosphatase 2 regulatory subunit B'epsilon [KO:K11584 ]
101724057 Ppp2r5d; protein phosphatase 2 regulatory subunit B'delta [KO:K11584 ]
101706140 Ppp2r5b; protein phosphatase 2 regulatory subunit B'beta [KO:K11584 ]
101712512 Ppp2r5a; protein phosphatase 2 regulatory subunit B'alpha [KO:K11584 ]
101704930 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit alpha isoform-like [KO:K11584 ]
101725746 Gadd45a; growth arrest and DNA damage inducible alpha [KO:K04402 ]
101711314 Gadd45g; growth arrest and DNA damage inducible gamma [KO:K04402 ]
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
KO pathway