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:3/23/2015)... , Mar. 23, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... on the growing mobile commerce market, announces its biometric payment ... campaign on CNBC television starting March 30 th . ... airing in New York markets. ... "We are excited about our new ad campaign following the ...
(Date:3/20/2015)... March 20, 2015 NXT-ID, Inc. (NASDAQ: ... company focused on the growing mobile commerce market, announces ... one of the products featured in 2015 "I Want ... 11:00 PM EST on the DIY Network.   ... Las Vegas , site of the 2015 International ...
(Date:3/18/2015)... 18, 2015 As mobile payments become ... smart wallets and apps continue to be introduced into the ... the mobile payment industry in focus today are:  NXT-ID, Inc. ... BABA ), Apple Inc. (NASDAQ: AAPL ... Inc. (NASDAQ: FB ) NXT-ID, Inc. ...
Breaking Biology News(10 mins):NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 3NXT-ID's Wocket Biometric Smart Wallet to Air on "I Want That" International CES Special 2NXT-ID's Wocket Biometric Smart Wallet to Air on "I Want That" International CES Special 3Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 2Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 3Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 4Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 5Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 6
... Forestry Applications (CREAF), in the celebration of its 20th ... experts to discuss the environmental future of the planet ... of both days is summarized in the Declaration of ... you will find bellow. Targeted to governments and to ...
... of Allergy and Infectious Diseases (NIAID), part of the ... to develop new and better diagnostics and treatments for ... grants were awarded under Project Bioshield Authority, legislation that ... Services (HHS) to use a rapid award process to ...
... atomic-resolution view of an enzyme found only in the eye ... about how this enzyme, essential to vision, is activated. The ... entering the retina is converted into a cascade of signals ... enzyme comes from the cone photoreceptors of the retina and ...
Cached Biology News:Barcelona Declaration 2008: Challenges and Pathways to Earth Sustainability 2Barcelona Declaration 2008: Challenges and Pathways to Earth Sustainability 3Barcelona Declaration 2008: Challenges and Pathways to Earth Sustainability 4NIAID announces 25 new awards to develop radiation countermeasures 2NIAID announces 25 new awards to develop radiation countermeasures 3Atomic-resolution views suggest function of enzyme that regulates light-detecting signals in eye 2
(Date:3/25/2015)... March 25, 2015 An increase of ... in all forms of food nutrients, regulatory changes and ... substantial rise in demand for natural astaxanthin over the ... to ramp up their capacities to satisfy the rising ... and synthetic source astaxanthin (used in nutraceuticals, aqua feed, ...
(Date:3/25/2015)... Chicago, IL (PRWEB) March 25, 2015 ... Australia in the latter part of 2014, ITRA Global ... ITRA Global, the International Tenant Representative Alliance, based in ... dedicated to representing tenants and occupiers of commercial real ... real estate advisory firm in Poland that exclusively advises ...
(Date:3/25/2015)... , March 25, 2015  The Technology Association of ... association dedicated to the promotion and economic advancement of ... Streamline Health as one of its Top 40 Innovative ... will recognize this prestigious group at the 2015 Georgia ... Cobb Galleria Centre. TAG,S Top 40 Awards ...
(Date:3/25/2015)... , March 25, 2015 FDNA®, ... version 4 of Face2Gene, allowing geneticists around ... computers, as well as mobile devices. Face2Gene® facilitates detection ... malformations to present comprehensive and up-to-date genetic references. The ... Genetics Meeting, ACMG 2015, in Salt Lake ...
Breaking Biology Technology:Global Astaxanthin Market to Reach Value of USD 1.1 billion by 2020, Expects Industry Experts in New Report Available at MarketPublishers.com 2International Organization Expands its Global Reach to Warsaw, Poland 2Streamline Health, Inc. Named a TAG Top 40 Innovative Technology Company 2Streamline Health, Inc. Named a TAG Top 40 Innovative Technology Company 3Streamline Health, Inc. Named a TAG Top 40 Innovative Technology Company 4FDNA Releases a Multi-Platform Version of Face2Gene, a Genetic Search and Reference Solution at ACMG 2015 2
... ... Baltimore, MD, USA. This innovative annual event offers a prestigious roster of industry ... safety, scale-up, production, and emerging technologies. , ... Columbia, MD (PRWEB) October 11, 2009 -- METTLER TOLEDO announces ...
... a new "lab-on-a-chip" technique that analyses tiny samples of blood ... cancer much more quickly than ever before. "The concentration ... of metabolized estrogen in breast tissue are known to ... women, and is therefore believed to increase the risk of ...
... the State University of Pennsylvania (USA) and the Universidad ... replicate biological structures, such as butterfly wings, on a ... make optically active structures, such as optical diffusers for ... ability to change colours depending on the angle) or ...
Cached Biology Technology:17th International Process Development Conference to Feature Presentations on Safety, Process Development, Crystallization, PAT, Scale-Up and Production 2New lab-on-a-chip technique developed at U of T 2Nanometric butterfly wings created 2
75 x 25 mm; sterile, recommended for immunohistochemistry of cell lines growing in suspension, Poly-D-Lysine coated, glass slides with polystyrene vessel, lid and safety removal tool...
ANTI 5-HYDROXYTRYPTOPHAN CONJ....
IMAGEQUANT 300 WKSTN, 1 EA. Category: ImageQuant CCD Imagers....
... Polynucleotide Kinase for labeling of 5' ... acids. In the exchange reaction T4 ... group from DNA to ADP and ... to the free 5' hydroxyl group ...
Biology Products: