Navigation Links
New discovery blurs distinction between human cells and those of bacteria

UCLA biochemists reveal the first structural details of a family of mysterious objects called microcompartments that seem to be present in a variety of bacteria. The discovery was published Aug. 5 in the journal Science.

"This is the first look at how microcompartments are built, and what the pieces look like," said Todd O. Yeates, UCLA professor of chemistry and biochemistry, and a member of the UCLA-DOE Institute of Genomics and Proteomics. "These microcompartments appear to be highly evolved machines, and we are just now learning how they are put together and how they might work. We can see the particular amino acids and atoms."

A key distinction separating the cells of primitive organisms like bacteria, known as prokaryotes, from the cells of complex organisms like humans is that complex cells -- eukaryotic cells -- have a much higher level of subcellular organization; eukaryotic cells contain membrane-bound organelles, such as mitochondria, the tiny power generators in cells. Cells of prokaryotes have been viewed as very primitive, although some contain unusual enclosures known as microcompartments, which appear to serve as primitive organelles inside bacterial cells, carrying out special reactions in their interior.

"Students who take a biology class learn in the first three days that cells of prokaryotes are uniform and without organization, while cells of eukaryotes have a complex organization," Yeates said. "That contrast is becoming less stark; we are learning there is more of a continuum than a sharp divide. These microcompartments, which resemble viruses because they are built from thousands of protein subunits assembled into a shell-like architecture, are an important component of bacteria. I expect there will be a much greater focus on them now."

Yeates' Science paper reveals the first structures of the proteins that make up these shells, and the first high-resolution insights into how they function.

"Those microc
'"/>

Source:University of California - Los Angeles


Page: 1 2 3

Related biology news :

1. Protein discovery could unlock the secret to better TB treatment
2. Purdue proves concept of using nano-materials for drug discovery
3. UCSD discovery may help extend life of natural pesticide
4. Leprosy microbes lead scientists to immune discovery
5. Biochemists report discovery of structure of major piece of telomerase; implications for cancer
6. Researchers make surprise discovery that some neurons can transmit three signals at once
7. Important discovery about second most fatal cancer
8. Harmless virus may hold key to more effective HIV drug discovery
9. Fundamental discovery -- Bone fracture
10. Genetic discovery could lead to drought-resistant plants
11. Gene discovery sheds light on causes of rare disease, cancer
Post Your Comments:
(Date:8/1/2014)... Scripps Research Institute (TSRI) have identified a signaling pathway ... fat cells. , The study, which is reported ... Proceedings of the National Academy of Sciences , sheds ... which is of great interest to medical researchers because ... against diabetes. , "This finding offers new possibilities for ...
(Date:7/31/2014)... from shale rock has increased by more than ... not fully understand the industry,s effects on nature ... journal Frontiers in Ecology and the Environment ... outpace scientific examination, a team of eight conservation ... University, concluded that determining the environmental impact of ...
(Date:7/31/2014)... Fla. --- By tracing nearly 3,000 genes to ... University of Florida scientists have created an extensive ... use large-scale, next-generation DNA sequencing. , Among ... closely related to small moths than to large ... butterflies evolved. The study also found that some ...
Breaking Biology News(10 mins):Scripps Research Institute scientists find new calorie-burning switch in brown fat 2Scripps Research Institute scientists find new calorie-burning switch in brown fat 3'Fracking' in the dark: Biological fallout of shale-gas production still largely unknown 2'Fracking' in the dark: Biological fallout of shale-gas production still largely unknown 3UF study advances 'DNA revolution,' tells butterflies' evolutionary history 2UF study advances 'DNA revolution,' tells butterflies' evolutionary history 3
... University of Nevada, Reno scientists have ended a decade-long ... pheromones: they manufacture their own monoterpenes ?the fragrant substances ... It had been thought that insects and other animals ... of our research is ultimately to control pheromone production," ...
... until death, our cells migrate: nerve cells make their ... to form organs, immune cells zero in to destroy ... through the body. Scientists studying these migrations didn't know ... A Burnham Institute study has identified a fragment of ...
... Johns Hopkins infectious disease specialists who have spent more ... AIDS worldwide are warning that limited international relief supplies ... and the Caribbean will not get to those who ... an article appearing in the American Journal of Public ...
Cached Biology News:Researchers discover key gene involved in bark beetle pheromone production 2New understanding of cell movement may yield ways to brake cancer's spread 2Hopkins AIDS experts issue warning about global efforts to provide drug therapies 2Hopkins AIDS experts issue warning about global efforts to provide drug therapies 3Hopkins AIDS experts issue warning about global efforts to provide drug therapies 4
(Date:7/31/2014)... (PRWEB) July 31, 2014 Food ... are increasingly searching for food alternatives that offer ... benefits. The food ingredient market has numerous players ... such as Vital Force Technology (VFT). VFT ... than 4,000 energetic patterns, all tested to produce ...
(Date:7/31/2014)... , July 31, 2014 Nearly 20,000 ... th Annual Meeting & Clinical Lab Expo in ... meeting featured never-before-seen breakthroughs in diagnostic research and technology ... they need. As of Wednesday, July 30, ... AACC Annual Meeting & Clinical Lab Expo, with more ...
(Date:7/31/2014)... through organs and even the entire body to visualize ... structures has been a long-time dream of biologists. A ... in the journal Cell has now made ... opaque organs, bodies, and human tissue biopsies transparent, while ... could pave the way for a better understanding of ...
(Date:7/31/2014)... July 31, 2014 The SNIS Foundation ... $25,000 to fund a translational research project.  The ... the gift was presented at the Society of ... in Colorado Springs, CO. ... approaches to neurovascular conditions, SNIS formed the SNIS ...
Breaking Biology Technology:Functional Ingredient Manufacturer – Vital Force Technology Infuses Raw Materials & Ingredients with Subtle Energy Formula 2Research on Digital Health, Alzheimer's, Ebola Draws Nearly 20,000 Attendees to 2014 AACC Annual Meeting & Clinical Lab Expo 2Research on Digital Health, Alzheimer's, Ebola Draws Nearly 20,000 Attendees to 2014 AACC Annual Meeting & Clinical Lab Expo 3See-through organs and bodies will accelerate biomedical discoveries 2SNIS Foundation Bestows First Grant Award For Cutting-Edge NeuroInterventional Research 2SNIS Foundation Bestows First Grant Award For Cutting-Edge NeuroInterventional Research 3
... ,09, Nanotech ,09 and the TechConnect Summit are ... Bringing Nano, Bio and Clean Tech Solutions From ... TechConnect World, in association with the Nano Science ... and Sustainable Industries Organization (CTSI), today announced that ...
... is our Shareholders, says SorrentinoDAMASCUS, Md., Feb. 26 ... 26th, 2009, the CEO of Syndication asked the BOD ... Dividend currently being issued. "We are a young Public ... in our green energy program. It is my intension ...
... CORDOVA, Calif., Feb. 26 ThermoGenesis, Corp. (Nasdaq: ... that process and store adult stem cells, said today that ... voluntary recall of certain lots of AXP disposable bagsets that ... that the recall was not the result of any safety ...
Cached Biology Technology:TechConnect World Publishes Conference Agenda Featuring More than 2,700 Presentations Addressing Nano, Bio and Clean Technologies 2TechConnect World Publishes Conference Agenda Featuring More than 2,700 Presentations Addressing Nano, Bio and Clean Technologies 3TechConnect World Publishes Conference Agenda Featuring More than 2,700 Presentations Addressing Nano, Bio and Clean Technologies 4TechConnect World Publishes Conference Agenda Featuring More than 2,700 Presentations Addressing Nano, Bio and Clean Technologies 5Syndication Inc. CEO asks Board of Directors to Consider Routine Quarterly Stock Dividends 2ThermoGenesis Says FDA Concurs with Plan for Previously Announced AXP(TM) Bagset Recall 2ThermoGenesis Says FDA Concurs with Plan for Previously Announced AXP(TM) Bagset Recall 3
Phospho-SEK1/MKK4 (Thr261) Antibody...
Rabbit polyclonal to Warfarin ( Abpromise for all tested applications). Antigen: Chemical / Small Molecule conjugated to KLH...
HSD17B3 Immunogen: HSD17B3 (NP_000188, 29 a.a. ~ 120 a.a) partial recombinant protein with GST tag. Storage: -20 C, Avoid Freeze/Thaw Cycles *Available for distribution in the US only...
Rabbit polyclonal to 13,14 dihydro 15 keto Prostaglandin E2 ( Abpromise for all tested applications)....
Biology Products: