Navigation Links
DNA replication protein also has a role in mitosis, cancer
Date:5/13/2012

CHAPEL HILL, N.C. The foundation of biological inheritance is DNA replication a tightly coordinated process in which DNA is simultaneously copied at hundreds of thousands of different sites across the genome. If that copying mechanism doesn't work as it should, the result could be cells with missing or extra genetic material, a hallmark of the genomic instability seen in most birth defects and cancers.

University of North Carolina School of Medicine scientists have discovered that a protein known as Cdt1, which is required for DNA replication, also plays an important role in a later step of the cell cycle, mitosis. The finding presents a possible explanation for why so many cancers possess not just genomic instability, but also more or less than the usual 46 DNA-containing chromosomes.

The new research, which was published online ahead of print by the journal Nature Cell Biology, is the first to definitively show such a dual role for a DNA replication protein.

"It was such a surprise, because we thought we knew what this protein's job was to load proteins onto the DNA in preparation for replication," said Jean Cook, PhD, associate professor of biochemistry and biophysics and pharmacology at the UNC School of Medicine and senior study author. "We had no idea it also had a night job, in a completely separate part of the cell cycle."

The cell cycle is the series of events that take place in a cell leading to its growth, replication and division into two daughter cells. It consists of four distinct phases: G1 (Gap 1), S (DNA synthesis), M (mitosis) and G2 (Gap 2). Cook's research focuses on G1, when Cdt1 places proteins onto the genetic material to get it ready to be copied.

In this study, Cook ran a molecular screen to identify other proteins that Cdt1 might be interacting with inside the cell. She expected to just find more entities that controlled replication, and was surprised to discover one that w
'/>"/>

Contact: Les Lang
llang@med.unc.edu
919-966-9366
University of North Carolina School of Medicine
Source:Eurekalert  

Page: 1 2

Related biology news :

1. JDRF-funded researchers discover proteins regulating human beta cell replication
2. Visualizing virus replication in three dimensions
3. New strategy for inhibiting virus replication
4. CSHL scientists uncover role of protein critical for activating DNA replication
5. Retrovirus replication process different than thought
6. Chimerix Antiviral CMX001 Inhibits JC Virus Replication in Preclinical Study; Late-Breaker Presented at Antiviral Congress 2010
7. Collisions of protein machines cause DNA replication derailment
8. Research into chromosome replication reveals details of heredity dynamics
9. In vitro infection and replication of hepatitis E virus in human hepatocytes
10. UBC megapixel DNA replication technology promises faster, more precise diagnostics
11. Study reveals new role for RNA interference during chromosomal replication
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
DNA replication protein also has a role in mitosis, cancer
(Date:9/17/2014)... learned a great deal about complex social behavior by ... something to teach too. , With their unusually large ... parrots live in a complex social environment---not merely in ... or ants, but in a dynamic setting of alliances ... intelligent mammals: dolphins, whales, primates, and social carnivores, like ...
(Date:9/16/2014)... Environmental Health at the Mailman School of Public Health ... asthma and prenatal exposure to two phthalates used in ... in the journal Environmental Health Perspectives . ... higher levels of the chemicals, butylbenzyl phthalate (BBzP) and ... percent increase in risk of developing asthma between age ...
(Date:9/16/2014)... CLEVELAND, Ohio (September 17, 2014)The North American Menopause ... for the comprehensive care of midlife womenon everything ... feature, "The North American Menopause Society Recommendations for ... today in the Society,s journal Menopause . ... recommendations for the care of midlife women freely ...
Breaking Biology News(10 mins):Being social: Learning from the behavior of birds 2Phthalates heighten risk for childhood asthma 2Phthalates heighten risk for childhood asthma 3
... A team of scientists from the University Hospitals of ... bowel diseases have low bone mass and poor bone architecture ... at increased risk of fracture. Inflammatory bowel disease ... inflammation of the bowel. Two of the most common disorders ...
... new study presented today at the World Congress on ... a commonly used injectible contraceptive, is associated with higher ... in combination with estrogens. Depot medroxyprogesterone acetate ... birth control drug which is injected every 3 months. ...
... muscle tissue experiences trauma or disease, such as ... as "satellite cells" respond to repair and regenerate ... neuromuscular diseases, such as muscular dystrophy, which affect ... researchers have used time-lapse photography to document satellite ...
Cached Biology News:Caught on tape: Muscle stem cells captured on video by MU researcher 2
(Date:9/17/2014)... FORT LAUDERDALE, Fla. , Sept. 17, 2014 ... signed an agreement to form a Special Purpose Vehicle in ... based Jatropha centric agro energy company. The SPV shall ... U.S. registered entity with AFAI as majority shareholder. The SPV ... Africa , particularly Ethiopia . ...
(Date:9/17/2014)... RXi Pharmaceuticals Corporation (NASDAQ: ... developing and commercializing innovative therapies addressing major unmet ... has been granted a patent by the United ... delivery system for delivering its "original" RNAi compounds ... treatment of diseases with an inflammatory component. Potential ...
(Date:9/17/2014)... CA (PRWEB) September 17, 2014 Escape Alert, ... for pets which will alert owners if their pet has ... GPS from an implanted microchip in the pet’s body. This ... microchips for pets have been around for many years, they ... are not able to track a pet’s location or alert the ...
(Date:9/17/2014)... (PRWEB) September 17, 2014 The ... committed to lowering the barriers to innovation in ... the appointment of Carmen Nitsche as Executive Director ... to expand its global reach. , Carmen joins ... Vice President, Corporate Development. At Accelrys, she managed ...
Breaking Biology Technology:AFAI Signs Joint Venture Agreement With Jatro Greentech Inc. 2AFAI Signs Joint Venture Agreement With Jatro Greentech Inc. 3RXi Pharmaceuticals Strengthens Intellectual Property Portfolio 2RXi Pharmaceuticals Strengthens Intellectual Property Portfolio 3RXi Pharmaceuticals Strengthens Intellectual Property Portfolio 4Implantable Microchip for Pets with GPS Tracking - Patent Filed by Escape Alert, LLC. 2Implantable Microchip for Pets with GPS Tracking - Patent Filed by Escape Alert, LLC. 3Pistoia Alliance Expands Business Development with Appointment of Carmen Nitsche 2
... photonics and renewable energy will be the focus of ... to 14, 2009 at McMaster University in Hamilton, Ontario, ... in conjunction with the event. , The 4th Nano ... the 14th Canadian Semiconductor Technology Conference (CSTC2009) will bring ...
... UC Riverside have made an accidental discovery in ... information in computers can be transported or stored. ... electrons possess that makes them behave like tiny ... of spin-based semiconductor technology such as ultrahigh-speed computers. ...
... programs give sponsors easy-to-use tools to store, mine and ... transfer knowledge base to ensure enrollment success, NEWTON, ... technology leader, announced the release of a new,product, "Center ... in-house recruitment capabilities for clinical,trial sponsors. The goal is ...
Cached Biology Technology:Joint nanotechnology forum to focus on electronics, photonics, renewable energy 2Discovery by UC Riverside physicists could enable development of faster computers 2Discovery by UC Riverside physicists could enable development of faster computers 3TCN e-Systems Offers Trial Sponsors Solutions for Creating In-House Center of Excellence in Patient Recruitment 2TCN e-Systems Offers Trial Sponsors Solutions for Creating In-House Center of Excellence in Patient Recruitment 3TCN e-Systems Offers Trial Sponsors Solutions for Creating In-House Center of Excellence in Patient Recruitment 4
Anti-ADAM-12 (Meltrin Alpha); amino terminal region; rabbit host...
Mouse monoclonal [3G8] to MDMA ( Abpromise for all tested applications)....
Fluorescein isothiocyanate (FITC) mouse anti-human IFN-alpha2 25 tests...
Rabbit Anti-melatonin (different linkage) Polyclonal Antibody...
Biology Products: