Navigation Links
New RNA polymerase discovered in plants

Biologists at Washington University in St. Louis have discovered an entirely new cellular "machine" in plants that plays a significant role in plant flowering and DNA methylation, a key chemical process essential for an organism's development.

A team headed by Craig Pikaard, Ph, D., Washington University professor of biology in Arts & Sciences, has discovered a fourth kind of RNA polymerase found only in plants and speculated to have been a plant feature for more than 200 million years.

RNA polymerase is an enzyme, or protein machine, essential for carrying out functions of cells and for expression of biological traits. It does its job by copying a template of DNA genetic information in order to make RNAs that encode proteins or that function directly in the cell.

Biologists have studied three kinds of RNA polymerase for decades in organisms ranging from brewer's yeast to humans. In all eukaryotes, the RNA polymerases Pol I, II, and III perform the same distinct , though separate, functions in different species.

But then along came Pol IV. Pikaard first noticed the evidence for a fourth polymerase when analyzing gene sequences after Arabidopsis thaliana , the "laboratory rat" of the plant world, was sequenced in 2001. It originally looked to him like an alternative form of either Polymerase I (Pol I), which makes the largest of the ribosomal RNAs, Pol II which makes RNAs for protein-coding genes, or Pol III, a specialist in making the shortest of the ribosomal RNAs and tRNAs.

The big 'subunit'

He and his colleagues looked specifically at two polypeptides that would be the key subunits if the fourth polymerase were functional, namely the largest and second largest subunits, what Pikaard refers to as the catalytic, or "business end" of any known polymerase.

"So, we took a reverse-genetics approach" said Pikaard. " We thought: 'What happens if we knock these genes out?' So, we knocked out the genes responsible
'"/>

Source:Washington University in St. Louis


Page: 1 2 3

Related biology news :

1. Newly-discovered class of genes determines ?and restricts ?stem cell fate
2. Newly discovered virus linked to childhood lung disorders and Kawasaki disease
3. New protein discovered by Hebrew University researchers
4. Newly discovered pathway might help in design of cancer drugs
5. New tumor-suppressor gene discovered
6. Newly discovered protein an important tool for sleeping sickness research
7. Function of new cancer genes discovered
8. Evidence of 600-million-year old fungi-algae symbiosis discovered in marine fossils
9. Natural tumor suppressor in body discovered by UCSD medical researchers
10. Enzymes newly discovered role may make it target for arthritis treatment
11. Newly discovered genetic disease sheds light on bodys water balance
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: New RNA polymerase discovered plants

(Date:5/21/2015)... According to a new ... Software, Services), by Applications (Surveillance (Airborne, Maritime, Land), ... (Military & Defense & Commercial) - Global Forecast ... is expected to grow from $7252.0 Million in ... Compound Annual Growth Rate (CAGR) of 6.6%. ...
(Date:5/19/2015)... 2015 Fingerprint Cards (FPC) has received ... FPC1155 and FPC1035 from one if its module partners. Deliveries ... Q3 2015 and the sensors will be used by smartphone ... for 2015 hereby amount to 740 MSEK to date. In ... MSEK and a number of smaller orders not separately communicated ...
(Date:5/14/2015)... --Research and Markets ( http://www.researchandmarkets.com/research/5whpxg/fingerprint ) has ... in Smart Mobile Devices " report to their ... a watershed year for fingerprint sensors in smartphones and ... gave fingerprint sensors a raison d,etre in the mobile ... a must-have feature in flagship smartphones. The ...
Breaking Biology News(10 mins):Thermal Imaging Market Worth $9,998.9 Million by 2020 2Thermal Imaging Market Worth $9,998.9 Million by 2020 3Thermal Imaging Market Worth $9,998.9 Million by 2020 4Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2Global Smart Mobile Devices Fingerprint Sensors Market 2015-2019: Key Vendors are Authentec, Validity Sensors, Fingerprint Cards, Next Biometrics Group. IDEX, and Qualcomm 2
... design of vaccines is rapidly expanding their use, safety, and ... of OMICS sciences for global health and vaccine design is ... special issue of OMICS: A Journal of Integrative Biology ... Inc . The issue is available free online . ...
... promiscuous in order to screen out sperm from genetically incompatible ... Anglia (UEA). Published tomorrow in the journal ... of why females in most species mate with multiple males ... and promiscuity can carry fatal risks for the female. ...
... announced that Prof. Madhav Marathe has been selected as ... George A. Michael Distinguished Scholar is an annual award ... time carrying out research at the Institute for Scientific ... intent of the scholarship is to foster long-term collaboration ...
Cached Biology News:21st century vaccines -- innovation in design and rational use 221st century vaccines -- innovation in design and rational use 3Female promiscuity can rescue populations from harmful effects of inbreeding 2Female promiscuity can rescue populations from harmful effects of inbreeding 3
(Date:5/27/2015)... 27, 2015  Two years after its founding by ... citizen scientists, Oakland -based Counter Culture ... its mission to democratize science through a full-fledged community ... Photo - ... Based out of the new Omni ...
(Date:5/27/2015)... The Medical Innovation Impact Index (MI3), ... on medical innovation, has been developed at the ... Dickinson University’s ( FDU ) Rothman Institute of Innovation ... to new FDA (Food & Drug Administration) draft guidance ... of certain medical devices. , “The main impediment ...
(Date:5/26/2015)... 26, 2015 WORMS, GERMANY – ... Co. (NYSE: GRA) announces that its manufacturing facility ... (GMP) certification from EXCiPACT™, an independent organization that ... , All three Grace facilities that ... excipient silica gels have now received GMP certification, ...
(Date:5/26/2015)... , May 26, 2015  Sangamo BioSciences, Inc. (NASDAQ: ... president and CEO, will provide an update on the progress ... overview of the company,s business strategy at 1:30pm ET on ... Conference. The conference is being held in New ... webcast live and may be accessed via a link on ...
Breaking Biology Technology:East Bay's Counter Culture Labs Seeks to Open Doors of Science to Public 2East Bay's Counter Culture Labs Seeks to Open Doors of Science to Public 3Medical Innovation Impact Index Launched at Fairleigh Dickinson University’s Initiative for Patient-Centered Innovation (iPCI) under the Rothman Institute 2CORRECTION: Grace European Facility Receives GMP Excipient Certification for SYLOID® FP Silica Gel 2Sangamo BioSciences Announces Presentation At The Jefferies 2015 Global Healthcare Conference 2
... Pairing traditional quality,tools with innovations like ... reduce waste, meet customer expectations and stay,afloat ... Improvement Leaders,Produce Profits in Recessions, the 10th ... LLC,s GLOBAL BENCHMARKING COUNCIL,executives from leading companies ...
... Employers Across Life Sciences Industry -, ROCKLAND, Mass., ... KGaA, Darmstadt, Germany, announced today that it has been ... biotechnology and,pharmaceutical industries, ranking number 7 out of the ... honored that the scientific community has recognized EMD Serono,as ...
... Pa., Oct. 9 Environmental,Tectonics Corporation,s (Amex: ... announced the sale of three (3) additional BARA-MED(R) ... Comprehensive Healthcare Solutions, a growing company who ... throughout the,United States, has purchased a total of ...
Cached Biology Technology:Six Sigma and Social Media: Tools for Reducing Costs, Improving Processes 2EMD Serono Named as a Top Employer by Science Magazine 2Environmental Tectonics Corporation Announces a Multiple Sale of Hyperbaric Monoplace Chambers to Comprehensive Healthcare Solutions 2Environmental Tectonics Corporation Announces a Multiple Sale of Hyperbaric Monoplace Chambers to Comprehensive Healthcare Solutions 3Environmental Tectonics Corporation Announces a Multiple Sale of Hyperbaric Monoplace Chambers to Comprehensive Healthcare Solutions 4
Rat polyclonal to acetyl Salicylic Acid ( Abpromise for all tested applications)....
Mouse monoclonal [DJR3] to DcR1 (Phycoerythrin) ( Abpromise for all tested applications). entrezGeneID: 8794 SwissProtID: O14798...
GBL Antibody...
Human acetylcholine receptor (AChR)-alpha. Exhibits homogenous, high affinity,binding to the receptor. Binds weakly to a64-78. Inhibits binding of many,myasthenia gravis sera to human AChR....
Biology Products: