Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


UCR Chemist Part of Team Identifying New Areas of Gene Regulation


Discovery of new location in a key protein that activates genetic activity aided with use of mass spectrometry at UCR

Researcher Kangling Zhang at the University of California, Riverside is part of a team that has discovered a new way that yeast governs genetic expression and repression, a finding that could be repeated in cells of other organisms.

Zhang, an academic coordinator at the Mass Spectrometry Facility of the Department of Chemistry at UCR, worked with Feng Xu and Michael Grunstein of the Department of Biological Chemistry at the David Geffen School of Medicine at UCLA on a paper titled Acetylation in Histone H3 Globular Domain Regulates Gene Expression in Yeast, which was published today in the journal Cell.

The paper focuses on observations of histones, the proteins that regulate genetic expression and form the major supporting structures housing the cell’s DNA. Histones interacting with each other form a ‘spool’ around which DNA is wrapped in the cell. Grunstein, one of the scientists in the current team, discovered in 1991 that sites of histone acetylation, a modification of the protein, play a fundamental role in the regulation of gene activation and repression.

The key findings of the current paper were the discovery of this acetylation at the core of the histone, rather than at the proteins’ ends, which are where most gene regulation is thought to take place. The team used mass spectrometry to show that acetylation at the core of the histone is associated with gene activation by attracting the protein string known as the SWI/SNI chromatin remodeling complex to the location of acetylation.

“In this paper, we used mass spectrometry to identify a novel acetylation site at the lysine 56 of yeast histone H3,” said Zhang, referring to the previously unknown location of a chemical opening to allow genetic transfers to occur. “We found acetylation at this site near the entry-exit points of the DNA superhelix as it wraps around the nucleosome is required for recruiting the nucleosome remodeling complex SWI/SNF and so regulates gene activity,” he said. “We show for the first time that a modification of a histone at the core of the protein, not the end, can regulate genes,” Grunstein added.

The mass spectrometry facility at the UCR’s Department of Chemistry and in the new Physical Sciences building provides super-high sensitivity for research in protein functions and in metabolic profiles of cells. The facility provides service and collaboration not limited to, protein separation, protein identification, sequencing, protein expression level quantification, as well as small molecule structural determination and metabolite identification.

Ricardo Duran | EurekAlert!
Further information:

More articles from Life Sciences:

nachricht Novel mechanisms of action discovered for the skin cancer medication Imiquimod
21.10.2016 | Technische Universität München

nachricht Second research flight into zero gravity
21.10.2016 | Universität Zürich

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

Im Focus: Ultra-thin ferroelectric material for next-generation electronics

'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.

Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Resolving the mystery of preeclampsia

21.10.2016 | Health and Medicine

Stanford researchers create new special-purpose computer that may someday save us billions

21.10.2016 | Information Technology

From ancient fossils to future cars

21.10.2016 | Materials Sciences

More VideoLinks >>>