Entry
Name
Cell cycle - Xenopus tropicalis (tropical clawed frog)
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
Organism
Xenopus tropicalis (tropical clawed frog) [GN:
xtr ]
Gene
100038054 cdkn1a; cyclin-dependent kinase inhibitor 1 isoform X1 [KO:K06625 ]
100101792 ppp2r5b; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit beta isoform [KO:K11584 ]
100125170 mad2l1; mitotic spindle assembly checkpoint protein MAD2A [KO:K02537 ]
100135353 pds5b; sister chromatid cohesion protein PDS5 homolog B [KO:K11267 ]
100145425 smc1b; structural maintenance of chromosomes protein 1B [KO:K06636 ]
100145671 smc3; structural maintenance of chromosomes protein 3 [KO:K06669 ]
100145798 pkmyt1; membrane-associated tyrosine- and threonine-specific cdc2-inhibitory kinase [KO:K06633 ] [EC:2.7.11.1 ]
100487013 gadd45b; growth arrest and DNA damage-inducible protein GADD45 beta [KO:K04402 ]
100490474 pds5a; sister chromatid cohesion protein PDS5 homolog A isoform X1 [KO:K11267 ]
100492023 rad21; double-strand-break repair protein rad21 homolog [KO:K06670 ]
100493711 smc1a; structural maintenance of chromosomes protein 1A [KO:K06636 ]
394542 cdc20; cell division cycle protein 20 homolog [KO:K03363 ]
394836 trip13; pachytene checkpoint protein 2 homolog [KO:K22399 ]
394858 ppp2r5c; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform [KO:K11584 ]
394864 ppp2r5e; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit epsilon isoform [KO:K11584 ]
394888 ppp2ca; serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform [KO:K04382 ] [EC:3.1.3.16 ]
395042 ppp2r1a; serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform [KO:K03456 ]
447953 ppp2r5a; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit alpha isoform [KO:K11584 ]
448031 ppp2cb; serine/threonine-protein phosphatase 2A catalytic subunit beta isoform [KO:K04382 ] [EC:3.1.3.16 ]
448122 mad2l2; mitotic spindle assembly checkpoint protein MAD2B isoform 1 [KO:K13728 ]
448135 orc4; origin recognition complex subunit 4 [KO:K02606 ]
448194 anapc16; anaphase-promoting complex subunit 16 [KO:K25229 ]
448442 gadd45g; growth arrest and DNA damage-inducible protein GADD45 gamma [KO:K04402 ]
448463 ppp2r1b; serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A beta isoform [KO:K03456 ]
448547 cdc16; cell division cycle protein 16 homolog [KO:K03353 ]
448767 cdkn2b; cyclin-dependent kinase 4 inhibitor B [KO:K04685 ]
448774 mad1l1; mitotic spindle assembly checkpoint protein MAD1 [KO:K06679 ]
493272 smad3; mothers against decapentaplegic homolog 3 [KO:K23605 ]
493326 anapc5; anaphase-promoting complex subunit 5 [KO:K03352 ]
493356 cdc6; cell division control protein 6 homolog [KO:K02213 ]
496558 zbtb17; zinc finger and BTB domain-containing protein 17 [KO:K10500 ]
496586 smad2; mothers against decapentaplegic homolog 2 [KO:K04500 ]
496610 anapc11; anaphase-promoting complex subunit 11 [KO:K03358 ]
548681 mau2; MAU2 chromatid cohesion factor homolog [KO:K11266 ]
548905 gadd45a; growth arrest and DNA damage-inducible protein GADD45 alpha [KO:K04402 ]
549081 anapc7; anaphase-promoting complex subunit 7 [KO:K03354 ]
549146 anapc10; anaphase-promoting complex subunit 10 [KO:K03357 ]
549273 skp1; S-phase kinase-associated protein 1 [KO:K03094 ]
549513 cdc23; cell division cycle protein 23 homolog [KO:K03355 ]
549767 orc5; origin recognition complex subunit 5 [KO:K02607 ]
549939 orc6; origin recognition complex subunit 6 [KO:K02608 ]
549994 anapc13.1; anaphase-promoting complex subunit 13 [KO:K12456 ]
733526 esco1; N-acetyltransferase ESCO1 [KO:K11268 ] [EC:2.3.1.-]
734048 orc1; origin recognition complex subunit 1 [KO:K02603 ]
779545 cdc45; cell division control protein 45 homolog [KO:K06628 ]
779925 cdc27; cell division cycle protein 27 homolog [KO:K03350 ]
780267 orc2; origin recognition complex subunit 2 [KO:K02604 ]
780300 cdkn2d; cyclin-dependent kinase 4 inhibitor D [KO:K06623 ]
780327 anapc1; anaphase-promoting complex subunit 1 [KO:K03348 ]
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