| Title | Description | Published | Added |
| The pageant of Japanese history, | | 1938 | 2023-07-28T12:19:13Z |
| Authenticom, Inc. v. CDK Global, LLC | This item represents a case in PACER, the U.S. Government's website for federal case data. This information is uploaded quarterly. To see our most recent version please use the source url parameter, linked below. To see the canonical source for this data, please consult PACER directly. | | 2020-03-25T23:18:28Z |
| Northtown Automotive Companies Inc. v. CDK Global, LLC | This item represents a case in PACER, the U.S. Government's website for federal case data. This information is uploaded quarterly. To see our most recent version please use the source url parameter, linked below. To see the canonical source for this data, please consult PACER directly. | | 2020-03-22T03:31:21Z |
| PAVILIONS PF PROTECTION | | 2006 | 2025-08-21T02:47:59Z |
| Het Utrechts Archief 807112 | Het Utrechts Archief catalog number: 807112 Description (Dutch): Afbeelding van het electrische treinstel nr. 461 (mat. 1936) van de N.S.N.B. Het treinstel 461 was een electrisch drierijtuigen-treinstel dat na de oorlog is samengesteld uit bakken van diverse treinstellen (Bk 607, C 613 en CDk 610). Het treinstel werd voornamelijk gebruikt voor het vervoer van het Concertgebouworkest. | 1960 | 2021-02-03T04:46:45Z |
| Mannen Med Salgpiporna | | 1960 | 2025-09-26T02:02:52Z |
| Two Kinds of Time: Life in Provincial China During the Crucial Years 1940-1941, Revised and Abridged | | 1967 | 2023-12-23T07:35:21Z |
| Research in physiology | | 1971 | 2025-09-08T00:26:07Z |
| Scientists In Organizations | | 1966 | 2025-09-11T18:21:23Z |
| De Racine Au Parthenon: Essais Sur La Litterature Et L'Art A L'age Classique | | 1977 | 2025-09-04T14:43:38Z |
| Flight Without Power | | 1940 | 2025-09-12T12:32:24Z |
| Separation - Invuduation | | 1971 | 2025-09-08T02:57:52Z |
| the valaue theory of karl marx | | 1976 | 2025-05-22T13:48:47Z |
| Concentration-dependent effects of narciclasine on cell cycle progression in Arabidopsis root tips. | This article is from BMC Plant Biology , volume 11 . Abstract Background: Narciclasine (NCS) is an Amaryllidaceae alkaloid isolated from Narcissus tazetta bulbs. NCS has inhibitory effects on a broad range of biological activities and thus has various potential practical applications. Here we examine how NCS represses plant root growth. Results: Results showed that the inhibition of NCS on cell division in Arabidopsis root tips and its effects on cell differentiation are concentration-dependent; at low concentrations (0.5 and 1.0 μM) NCS preferentially targets mitotic cell cycle specific/cyclin complexes, whereas at high concentration (5.0 μM) the NCS-stimulated accumulation of Kip-related proteins (KRP1 and RP2) affects the CDK complexes with a role at both G1/S and G2/M phases. Conclusions: Our findings suggest that NCS modulates the coordination between cell division and differentiation in Arabidopsis root tips and hence affects the postembryonic development of Arabidopsis seedlin; | 2011 | 2014-10-28T22:30:05Z |
| A novel Cdk9 inhibitor preferentially targets tumor cells and synergizes with fludarabine. | This article is from Oncotarget , volume 5 . Abstract Cdk9 is a key elongation factor for RNA transcription and functions by phosphorylating the C-terminal domain of RNA polymerase II. Here we present direct evidence that cdk9 is important for cancer cell survival and describe the characterization of the potent cdk9 inhibitor CDKI-73 in primary human leukemia cells. CDKI-73 induced caspase-dependent apoptosis that was preceded by dephosphorylation of cdk9 and serine 2 of RNA polymerase II. CDKI-73 was more potent than the pan-cdk inhibitor flavopiridol and showed >200-fold selectivity against primary leukemia cells when compared with normal CD34+ cells. Furthermore, CDKI-73 was equipotent in poor prognostic sub-groups of leukemia patients and showed cytotoxic synergy with the nucleoside analog fludarabine. The Mechanism of synergy was associated with CDKI-73-mediated transcriptional inhibition of MCL1 and XIAP that was maintained when used in combination with fludarabine. Our data pres; | 2013 | 2014-10-23T22:14:55Z |
| The politics of lawmaking in post-Mao China : institutions, processes, and democratic prospects | vi, 286 p. ; 24 cm // Includes bibliographical references (p. [253]-281) and index | 1999 | 2023-10-02T01:07:22Z |
| Practical RichFaces | 1 online resource (xvi, 392 pages) : // Annotation // Title Page; Copyright Page; Dedication Page; Contents at a Glance; Table of Contents; About the Authors; About the Technical Reviewer; Acknowledgments; Introduction; Who Should Read This Book; CHAPTER 1 The Basics; Tell Me About RichFaces First!; What is JSF?; JSF Application Is Built Out of UI Components; JSF Is a Standard; JSF Has Two Main Versions; JSF Has Two Main Implementations; JSF Is Very Extendable; The Most Important JSF Features; User Interface Components; Component Rendering; Events; Ajax; An Overview of RichFaces; RichFaces's Component Tag Libraries; RichFaces Skins // RichFaces Client-side ValidationRichFaces' Component Development Kit; Using RichFaces with CDI and Dependency Injection; RichFaces: A Historical Perspective; Understanding That JSF Application Is Running on the Server; When Starting with JSF, Keep an Open Mind; Summary; CHAPTER 2 Getting Started; Setting Up; Adding RichFaces to an Existing JSF 2 Project; ; | 2011 | 2022-11-15T15:10:05Z |
| DTIC ADA359281: Role of the Cdk Inhibitor Sic 1 in Start | Mpst cells have four fundamental goals; they must replicate their DNA, segregate their chromosomes, double their mass, and divide. Coordination of these events is essential. I have used the budding yeast S. cerevisiae to dissect the molecular events that control cell cycle progression. I have shown that not only are G1 cyclin-CDK complexes highly unstable rate-limiting activators for cell cycle progression, but that their essential function is to regulate the initiation of DNA replication by phosphorylating and promoting the degradation of a key cell cycle inhibitor, Sic1 (1,2). In fact, cyclin-CDK-regulated proteolysis may constitute the major mechanism of cell cycle control (3). Moreover, Sic1 appears to be the analog of the RB tumor suppressor gene. I have shown that Sic1, like RB, controls the timing of S-phase, ensures genomic stability, and most significantly, sic1 deletions, like rb deletions, completely remove cell cycle dependence on G1 cyclins (1,22). Furthermore, Sic1 protei; | 1998 | 2018-04-21T20:11:43Z |
| yahoo-groups-2018-07-21T22-47-06Z-4bbc23 | Yahoo! Groups API grab. Contains messages of the following groups: 1ahoahong 2009cmsc128 abajarcolesterol abqphilosophers aceng1-ib agentorangeveterans alumnisaba93 ap12thv1 apn_maamvanne aquascape-indonesia arabic_inside arkiyoliji1 artsbabes asteric_of_smpn4_bogor ba186_sad bch_tongdoan_2008_2010 beginnerbluegrassjam biblebeegurnee binjakon bits_dlpd_msss2009 blogbirudotcom bsa_bag bspe1-1_economist ca411-1m canoepolohunks0809 ccfcommittee_09_10 che_141_142_tqruv chem2a_woodland cict_itfnds-icb citihi85 contratoscinemauff cool_hood_babii cpi_2009_2010 csci12_tz curriculoseprogramas2009essb dbti_tarlac_faculty discretemath_it2nd dmt_people dnyandeepnews dpms_2010 ec102h eco101_09 eco11_0910 ecoprofessionals_nea edp111_addu elladerma emc_ss_dames encoreestate esjsem1admu0910 galeradoingles2008 genevaacademicfoundation glawenko h-383lpu hau_6comgrad hiltech_group homplantes hum1_thu1 iit-kgp-met75 imtak-05 infoamie ingenieria_gay inspirationaldesignsvoices irc-sbg ironbros-team_one it10; | | 2018-07-21T22:47:14Z |
| Ultimate Mortal Kombat 3: (BR) [CDK]-heldinho vs(BR) [CDK]-Chakality - 2022-04-03 01:22:00 | (BR) [CDK]-heldinho vs (BR) [CDK]-Chakality - 2022-04-03 01:22:00 Fightcade replay id: 1648948920772-7644 #fightcade #umk3 #[CDK]-heldinho #[CDK]-Chakality For more videos check out: https://fightcadevids.com | | 2022-07-24T22:02:35Z |
| Street Fighter Alpha 2 (960430 USA): (BR) [CDK]-Shaka vs(BR) SweetG - 2022-08-22 04:08:29 | (BR) [CDK]-Shaka (Rank D) vs (BR) SweetG C - 2022-08-22 04:08:29 Fightcade replay id: 1661141309737-2933 0:00 Ryu vs Sagat 02:38 Ryu vs Dan 04:15 Dan vs Sagat 06:25 Evil Ryu vs Dan 08:19 Dan vs Zangief #fightcade #sfa2u #0:06:25 #[CDK]-Shaka #SweetG #0:08:19 #Sagat #Zangief #0:02:38 #0:00:10 #Dan #0:04:15 For more videos check out: https://fightcadevids.com | | 2023-01-23T15:42:54Z |
| Plant WEE1 kinase is cell cycle regulated and removed at mitosis via the 26S proteasome machinery. | This article is from Journal of Experimental Botany , volume 64 . Abstract In yeasts and animals, premature entry into mitosis is prevented by the inhibitory phosphorylation of cyclin-dependent kinase (CDK) by WEE1 kinase, and, at mitosis, WEE1 protein is removed through the action of the 26S proteasome. Although in higher plants WEE1 function has been confirmed in the DNA replication checkpoint, Arabidopsis wee1 insertion mutants grow normally, and a role for the protein in the G2/M transition during an unperturbed plant cell cycle is yet to be confirmed. Here data are presented showing that the inhibitory effect of WEE1 on CDK activity in tobacco BY-2 cell cultures is cell cycle regulated independently of the DNA replication checkpoint: it is high during S-phase but drops as cells traverse G2 and enter mitosis. To investigate this mechanism further, a yeast two-hybrid screen was undertaken to identify proteins interacting with Arabidopsis WEE1. Three F-box proteins and a subunit of t; | 2013 | 2014-10-23T22:24:00Z |
| Anti-Cancer Effect of IN-2001 in MDA-MB-231 Human Breast Cancer. | This article is from Biomolecules & Therapeutics , volume 20 . Abstract In recent years, inhibition of HDACs has emerged as a potential strategy to reverse aberrant epigenetic changes associated with cancer, and several classes of HDAC inhibitors have been found to have potent and specific anticancer activities in preclinical studies. But their precise mechanism of action has not been elucidated. In this study, a novel synthetic inhibitor of HDAC, 3-(4-dimethylamino phenyl)-N-hydroxy-2-propenamide [IN-2001] was examined for its antitumor activity and the underlying molecular mechanisms of any such activity on human breast cancer cell lines. IN-2001 effectively inhibited cellular HDAC activity (IC50 = 0.585 nM) in MDA-MB-231 human breast cancer cells. IN-2001 caused a significant dose-dependent inhibition of cell proliferation in estrogen receptor (ER) negative MDA-MB-231 human breast cancer cells. Cell cycle analysis revealed that the gowth inhibitory effects of IN-2001 might be attrib; | 2011 | 2014-10-24T18:12:19Z |
| Cdk-mediated phosphorylation of the Kv?2 auxiliary subunit regulates Kv1 channel axonal targeting. | This article is from The Journal of Cell Biology , volume 192 . Abstract Phosphorylation of Kvβ2 releases Kv1 channels from microtubules to control their specific distribution at the axonal membrane. | 2011 | 2014-10-24T23:30:53Z |
| Assessment of network perturbation amplitudes by applying high-throughput data to causal biological networks. | This article is from BMC Systems Biology , volume 6 . Abstract Background: High-throughput measurement technologies produce data sets that have the potential to elucidate the biological impact of disease, drug treatment, and environmental agents on humans. The scientific community faces an ongoing challenge in the analysis of these rich data sources to more accurately characterize biological processes that have been perturbed at the mechanistic level. Here, a new approach is built on previous methodologies in which high-throughput data was interpreted using prior biological knowledge of cause and effect relationships. These relationships are structured into network models that describe specific biological processes, such as inflammatory signaling or cell cycle progression. This enables quantitative assessment of network perturbation in response to a given stimulus. Results: Four complementary methods were devised to quantify treatment-induced activity changes in processes described by ; | 2012 | 2014-10-25T01:34:45Z |
| Are phylogenetic trees suitable for chemogenomics analyses of bioactivity data sets: the importance of shared active compounds and choosing a suitable data embedding method, as exemplified on Kinases. | This article is from Journal of Cheminformatics , volume 5 . Abstract Background: ‘Phylogenetic trees’ are commonly used for the analysis of chemogenomics datasets and to relate protein targets to each other, based on the (shared) bioactivities of their ligands. However, no real assessment as to the suitability of this representation has been performed yet in this area. We aimed to address this shortcoming in the current work, as exemplified by a kinase data set, given the importance of kinases in many diseases as well as the availability of large-scale datasets for analysis. In this work, we analyzed a dataset comprising 157 compounds, which have been tested at concentrations of 1 μM and 10 μM against a panel of 225 human protein kinases in full-matrix experiments, aiming to explain kinase promiscuity and selectivity against inhibitors. Compounds were described by chemical features, which were used to represent kinases (i.e. each kinase had an active set of features and an ina; | 2013 | 2014-10-28T15:40:11Z |
| Inhibition of Post-Transcriptional RNA Processing by CDK Inhibitors and Its Implication in Anti-Viral Therapy. | This article is from PLoS ONE , volume 9 . Abstract Cyclin-dependent kinases (CDKs) are key regulators of the cell cycle and RNA polymerase II mediated transcription. Several pharmacological CDK inhibitors are currently in clinical trials as potential cancer therapeutics and some of them also exhibit antiviral effects. Olomoucine II and roscovitine, purine-based inhibitors of CDKs, were described as effective antiviral agents that inhibit replication of a broad range of wild type human viruses. Olomoucine II and roscovitine show high selectivity for CDK7 and CDK9, with important functions in the regulation of RNA polymerase II transcription. RNA polymerase II is necessary for viral transcription and following replication in cells. We analyzed the effect of inhibition of CDKs by olomoucine II on gene expression from viral promoters and compared its effect to widely-used roscovitine. We found that both roscovitine and olomoucine II blocked the phosphorylation of RNA polymerase II C-termi; | 2014 | 2014-10-23T20:50:01Z |
| Proteomics of a fuzzy organelle: interphase chromatin. | This article is from The EMBO Journal , volume 33 . Abstract Chromatin proteins mediate replication, regulate expression, and ensure integrity of the genome. So far, a comprehensive inventory of interphase chromatin has not been determined. This is largely due to its heterogeneous and dynamic composition, which makes conclusive biochemical purification difficult, if not impossible. As a fuzzy organelle, it defies classical organellar proteomics and cannot be described by a single and ultimate list of protein components. Instead, we propose a new approach that provides a quantitative assessment of a protein's probability to function in chromatin. We integrate chromatin composition over a range of different biochemical and biological conditions. This resulted in interphase chromatin probabilities for 7635 human proteins, including 1840 previously uncharacterized proteins. We demonstrate the power of our large-scale data-driven annotation during the analysis of cyclin-dependent kinase (CD; | 2014 | 2014-10-23T08:11:58Z |
| U3WM-LPAL: www.autonews.com | Perma.cc archive of https://www.autonews.com/dealers/cdk-reynolds-challenge-ariz-dealer-data-law created on 2021-11-14 00:51:55+00:00. | 2021 | 2021-11-15T02:08:09Z |
| Serious Pursuits: Vol. III: Communications and Education (Collected Essays of Asa Briggs, Vol 3) | | 1991 | 2023-10-02T01:45:15Z |
| The lonely warrior: the life and times of Robert S. Abbott | | 1955 | 2023-12-27T08:33:21Z |
| Cyber Flash Point. Devastating Ransomware Attack on Auto Industry. CDK Global. | In today's cyber flash point, we show you how to digest recent data breaches and how to take action against cyber crime.Have you ever wondered how a single cyberattack can cripple an entire industry? Or how businesses can recover from such a devastating blow? Ever realize the cyber security risks from SaaS platforms? Today we dive into the gripping tale of the ransomware attacks on CDK Global, a leading provider of dealer management systems (DMS) for car dealerships across North America. Send us a textHave a Guest idea or Story for us to Cover? You can now text our Podcast Studio direct. Text direct (904) 867-446?? Subscribe now http://www.youtube.com/@cybercrimejunkiespodcast and never miss an episode! Follow Us: ?? Website: https://cybercrimejunkies.com?? X/Twitter: https://x.com/CybercrimeJunky?? Instagram: https://www.instagram.com/cybercrimejunkies/Want to help us out? Leave us a 5-Star review onApple Podcast Reviews. Listen to Our Podcast:??️ Apple Podcasts: https://podcasts.a; | 2024 | 2024-11-14T06:46:45Z |
| On The Development of Biophysical Models for Space Radiation Risk Assessment | Experimental techniques in molecular biology are being applied to study biological risks from space radiation. The use of molecular assays presents a challenge to biophysical models which in the past have relied on descriptions of energy deposition and phenomenological treatments of repair. We describe a biochemical kinetics model of cell cycle control and DNA damage response proteins in order to model cellular responses to radiation exposures. Using models of cyclin-cdk, pRB, E2F's, p53, and GI inhibitors we show that simulations of cell cycle populations and GI arrest can be described by our biochemical approach. We consider radiation damaged DNA as a substrate for signal transduction processes and consider a dose and dose-rate reduction effectiveness factor (DDREF) for protein expression. | 1999 | 2011-05-29T02:54:15Z |
| Mad Money : CNBC : November 7, 2018 6:00pm-7:00pm EST | Colorful financial analyst Jim Cramer offers his insights into the market. | 2018 | 2018-11-07T23:00:00Z |
| Laraqua's Masks Of Nyarlathotep Prologue | The prologue for my Masks of Nyarlathotep solo game designed to get the protagonist to New York ready for the Half-Moon Cult adventure followed by Masks itself. More information on the campaign can be found, including Easter Eggs during the various sessions and a little context, can be found under the Masks of Nyarlathotep tag on http://stwildonroleplaying.blogspot.com.au/ The opening music is CDK's Sunday Sunrise which is Creative Commons (Attribution 3.0) and can be found at http://ccmixter.org/files/cdk/13613 Episode 3's subway soundtrack is Public Domain material which can be found at the Soundbible at http://soundbible.com/386-Riding-NYC-Subway-Car.html | 2013 | 2013-11-24T21:58:36Z |
| Behind The Scenes and Updates On Each Case | In this episode, I take you behind-the-scenes of each case I covered in the Court Junkie podcast, as well as go over the latest updates. You'll also hear from Pravin Varughese's mom and family friend, as well as other Court Junkies. Please consider supporting Court Junkie with as little as $3 a month via Patreon.com/CourtJunkie. Help support Court Junkie with $6 a month and get access to bonus monthly episodes.Follow me on Twitter @CourtJunkiePod or Instagram at CourtJunkie.Music featured in this episode: - Improvisation On Friday... by Alex (c) copyright 2008 Licensed under a Creative Commons Attribution (3.0) license. http://dig.ccmixter.org/files/AlexBeroza/17253 Ft: The3amAssociation - CAliformia Road by dilating_times (c) copyright 2014 Licensed under a Creative Commons Attribution (3.0) license. http://dig.ccmixter.org/files/dilating_times/44880 - summertime instrumental 1 by cdk (c) copyright 2008 Licensed under a Creative Commons Attribution (3.0) license. http://dig.ccmixter; | 2017 | 2023-07-08T12:41:02Z |
| Bob Baker Volkswagen v. CDK Global, LLC | This item represents a case in PACER, the U.S. Government's website for federal case data. This information is uploaded quarterly. To see our most recent version please use the source url parameter, linked below. To see the canonical source for this data, please consult PACER directly. | | 2018-09-16T22:44:00Z |
| Psychology of Personal Adjustment Student's Introduction to Mental Hygience | | 1949 | 2025-09-10T00:53:02Z |
| The Old Architecture of Quebec | | 1947 | 2025-05-22T17:20:02Z |
| The Osborne/McGraw-Hill CP/M-86 user's guide | viii, 568 p. : 24 cm // On t.p. the registered trademark symbol "R" is superscript following "86" in the title // Includes index | 1985 | 2023-12-22T13:18:25Z |
| the zambesi doctors | | 1964 | 2025-06-16T09:45:55Z |
| Geology And Ireland | | 1963 | 2025-09-11T15:36:50Z |
| In the Path of Mahatma Gandi | | 1950 | 2025-08-23T20:29:24Z |
| Congenital Dislocation of the Knee in a Newborn | Congenital dislocation of the knee (CDK) is a relatively rare condition with an estimated prevalence of 1 per 100 000 live births, which is approximately 1% of the incidence of developmental dysplasia of the hip1. It may occur in isolation, but often occurs in the presence of muscle imbalance such as that seen with arthrogryposis, Larsen syndrome, and myelomeningocele. CDK has also been reported to occur with other musculoskeletal abnormalities including developmental hip dysplasia, clubfoot, congenital vertical talus, and congenital dislocation of the elbow2. | 2020 | 2024-05-09T10:25:38Z |
| CDK Core Performance Series | CDK Architectural Performance Workstation — Built for Architecture at Scale. When Speed Is Non-Negotiable. Powered by the Intel Core i7-14700F, ZOTAC GeForce RTX 5060 16GB, and 32GB ADATA DDR5-4800 on the ASUS Prime B760M-A platform, this configuration is engineered for fast modeling, smooth viewport performance, and accelerated rendering workflows. Seamlessly run Autodesk Revit, AutoCAD, SketchUp, 3ds Max, Lumion, Enscape, V-Ray, Twinmotion, and BIM coordination tools with stable real-time performance and efficient resource allocation. From concept modeling to high-resolution renders and large-scale BIM projects, this workstation delivers responsive navigation, faster render iterations, optimized memory handling, and reliable thermal stability for long production hours. Expect smoother real-time visualization, reduced render wait times, efficient multitasking, and zero workflow bottlenecks — even on complex architectural assemblies. If your studio demands consistency, scalability,; | | 2026-04-09T10:47:02Z |
| Old Vincennes: The history of a famous old town and its glorious past | | 1962 | 2023-12-23T20:12:56Z |
| Wiki - cdk | cdk dumped with WikiTeam tools. | | 2014-01-02T21:54:16Z |
| DTIC ADA412764: Use P27KIP1 Degradation for Breast Cancer Diagnosis and Therapy | P27 IS A CDK inhibitor that controls the Gl/S transition. Low or absent expression of p27 has been observed in many malignant tumors including breast cancer. SCF(SKP2) is a ubiquitin E3 ligase that interacts and targets p27 for ubiquitin-dependent proteolysis. One aim of the proposal is to determine whether there is an inverse relationship between SCF(SKP2) and p27 in breast cancer and the experiments are in progress. Another aim is to determine the domain on SKP2 that binds to p27. We have determined the carboxy-terminal region of SKP2 is required for binds to phosphorylated p27. The critical aim is to determine whether inhibition of SCF(SKP2) in breast cancer cells causes cell cycle arrest. Our studies suggest that inhibition of SCF(SKP2) in breast cancer and other cancer cells causes accumulation of p27 and Gi cell cycle block. Thus SCF(SKP2) may be used as a target for breast cancer therapy. | 2002 | 2018-05-12T16:38:48Z |
| DTIC ADA366910: Interaction of the Tumor Suppressor p53 With Replication Protein A. | In order to understand how the tumor suppressor p53 blocks the cell-cycle at the G1-S transition we studied how p21, a transcription target of p53, interacts with and inhibits cyclin-dependent kinases (cdk). We identified specific cyclin-binding Cy motifs on the p21 molecule that were essential for docking p21 on cyclin-cdks and discovered that such Cy motifs were present and functional on substrates and activators of cdks. This year we discovered the presence of a Cy motif on a newly identified human DNA replication initiation factor, Cdc18. This Cy motif is required for the stable association of Cdc18 with cyclin A-cdk2 in vivo. Wild type Cdc18 is in the nucleus at G1 and removed from the nucleus at S phase once cyclin-cdks are activated. The Cy motif of Cdc18 is necessary for this S phase specific removal of nuclear Cdc18 implying that Cdc18 is a physiological substrate of cyclin-cdks at the G1-S transition. | 1998 | 2018-04-24T22:32:17Z |
| DTIC ADA389310: Regulation of Ubiquitin Mediated Proteolysis of G1 Cyclins and the CDK Inhibitor p27 by the Cullin Gene Family in Normal and Tumorigenic Human Breast Cells | The periodicity of CDK activity provides the molecular basis for unidirectional cell cycle progression and is partly controlled by ubiquitin-mediated proteolysis of both cyclins and CDK inhibitors. Deregulated expression of G1 CDK inhibitors and G1 cyclins has been directly linked to breast cancer development. The mechanisms regulating the ubiquitination of these two protein families constitute essential components of G1 cell cycle control in mammalian cells. Polyubiquitination of proteins is known to be catalyzed by a cascade of enzymes: E1 (ubiquitin activating), E2 (ubiquitin conjugating), and E3 (ubiquitin ligating). Two issues critical to our understanding of the regulation of protein turnover are how E3 ligases target proteins for ubiquitination and how they themselves are regulated. We have found that cullins partner with another multigene family of evolutionarily conserved proteins, the ROC/APC11 family, to form a complex that contains E3 ubiquitin ligase activity. We have show; | 2000 | 2018-05-01T22:46:59Z |