Navigation Links
Genome analysis of marine microbe reveals a metabolic minimalist
Date:2/21/2010

f the photosynthetic apparatus <http://press.ucsc.edu/text.asp?pid=2555>. The missing parts, known as photosystem II, carry out the stage in photosynthesis that generates oxygen by splitting water molecules. This is significant because oxygen inhibits nitrogen fixation. Most nitrogen-fixing cyanobacteria carry out photosynthesis during the day and nitrogen fixation at night, but UCYN-A can fix nitrogen all day long.

The new paper extends the list of UCYN-A's missing metabolic pathways to include, among other things, a process central to aerobic metabolism known as the TCA cycle or Krebs cycle. It also lacks the Calvin cycle, which uses the carbon from carbon dioxide to build sugars, and it is unable to synthesize about half of the 20 essential amino acids.

"This thing is really stripped down," said James Tripp, a bioinformatics specialist at UCSC and lead author of the Nature paper. "My analysis indicates it has to have an outside source to obtain sugars, amino acids, and two out of the four bases needed to make DNA."

Tripp performed the genome analysis reported in the paper. He worked closely with scientists at 454 Life Sciences, a Roche company based in Branford, Conn., that specializes in high-throughput DNA sequencing technology. The researchers applied new genome sequencing and assembly techniques to produce the complete genome sequence from natural samples of DNA. Because UCYN-A cannot be cultured, researchers used a cell-sorting technique called flow cytometry to obtain concentrated samples of the microbe from ocean water, and then extracted DNA from the cells for sequencing.

Although UCYN-A must depend on other organisms for key nutrients, the researchers have found no evidence that it lives in a close symbiotic association with another microorganism. Zehr said the failure to find another organism closely associated with it suggests two possibilities. "It might l
'/>"/>

Contact: Tim Stephens
stephens@ucsc.edu
831-459-2495
University of California - Santa Cruz
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Giant panda genome reveals new insights into the bears bamboo diet
2. Genome sequencing of 3 parasitoid wasp species
3. Sorting the drivers from the passengers in the cancer genome
4. USDA scientists sequence genome of grass that can be a biofuel model crop
5. New genome sequence will aid study of important food, fuel crops
6. NTU researchers complete the worlds first in-depth study of the malaria parasite genome
7. Parasitic wasps newly sequenced genomes reveal new avenues for pest control
8. Genome advances peril for pests
9. Genomes of identical twins reveal epigenetic changes that may play role in lupus
10. Germany starts its part in the International Cancer Genome Project
11. Genome BC collaborates with Chile and Norway to sequence salmon genome
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/21/2014)... Calif. A team of University of California, Riverside ... when placed under the grates of a backyard grill reduces ... during cooking. , The one-eighth inch thick steel carbon plate ... owned by cutting a slit into the grill to allow ... also be adopted by grill manufacturers who could sell new ...
(Date:7/21/2014)... Lgar,s team at the INRS nergie Matriaux Tlcommunications ... a spatial and temporal resolution greatly exceeding that ... a femtosecond laser source to shoot a molecular ... vinylidene. An article presenting the advancement was recently ... . , "The approach we developed combines ...
(Date:7/21/2014)... climate change, due to greenhouse gasses emitted by livestock. ... rise and that beef cattle are responsible for far ... It is published by Climactic Change . ... comes to climate change. It is released by vehicles, ... of greenhouse gas totals. But methane and nitrous oxide ...
Breaking Biology News(10 mins):Catching grease to cut grill pollution 2Climate: Meat turns up the heat 2
... brain assigns cells to participate in encoding and storing memories. ... a protein called CREB controls the odds of a neuron ... edition of Science reports the findings, which suggest a new ... other brain injury. , "Making a memory ...
... 2007, issue of the journal Neuron, published by Cell ... numerical information--both abstract quantities and their concrete representations as ... understanding how the brain processes quantitative information as well ... the brain develops in children. Such studies could aid ...
... protein protects human pancreatic cancer cells from being forced ... defenses against out-of-control cell growth, researchers at The University ... the March issue of Molecular Cancer Research. , The ... has been found by researchers at M. D. Anderson ...
Cached Biology News:UCLA/Toronto researchers unlock key to memory storage in brain 2Studies yield insight into the numerical brain 2Studies yield insight into the numerical brain 3Studies yield insight into the numerical brain 4Protein found to shield pancreatic cancer cells from self-destruction 2
(Date:7/18/2014)... , July 18, 2014  On ... highlighting AbbVie and Shire,s complementary fit and ... A copy of the infographic materials ... http://www.abbvieinvestor.com/phoenix.zhtml?c=251551&p=irol-disclaimer-documents In accordance ... a copy of this announcement will be ...
(Date:7/18/2014)... MA (PRWEB) July 18, 2014 Provia ... to its growing Advisory Board. Dr. Vaught has ... for over 20 years. As one of the ... Biological and Environmental Repositories - in 1999, he served ... is again president-elect. , In 2005, Dr. Vaught began ...
(Date:7/17/2014)... 17, 2014  Prana Biotechnology (NASDAQ: PRAN ... its clinical development program for Alzheimer,s disease. ... Neuroscience and Mental Health, The University of Melbourne, will ... EURO trials in his presentation at the Alzheimer,s Association ... The presentation is entitled: "How to ...
(Date:7/17/2014)... the design and development of new, more efficient solar ... Berkeley National Laboratory (Berkeley Lab) have developed the first ... model free of adjustable or empirical parameters for ... carriers are electrical charge carriers - electrons and holes ... thermal equilibrium. , "Hot carrier thermalization is a major ...
Breaking Biology Technology:NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION 2NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION 3NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION 4NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION 5NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION 6NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION 7Dr. Jim Vaught, Ph.D., Former Chief of BBRB, Joins Provia Laboratories as Advisory Board Member 2Dr. Jim Vaught, Ph.D., Former Chief of BBRB, Joins Provia Laboratories as Advisory Board Member 3Prana Alzheimer's disease Development Program update 2Prana Alzheimer's disease Development Program update 3Prana Alzheimer's disease Development Program update 4Prana Alzheimer's disease Development Program update 5First ab initio method for characterizing hot carriers 2First ab initio method for characterizing hot carriers 3
... Biotech Inc.,(TSX: ONC, NASDAQ: ONCY) (,Oncolytics,) reported ... group at The Institute of Cancer Research,London, ... characterizing immune,system responses to administration of intravenous ... paper, entitled "Characterization of the Adaptive and,Innate ...
... 17 OmniSonics Medical,Technologies, Inc., a developer of ... vascular disease, announced today that it has enrolled ... SONIC I is a prospective,multi-centered U.S. registry study ... undergoing percutaneous mechanical,thrombectomy of acute deep vein thrombosis ...
... ANGELES, March 17 Signalife, Inc. (Amex:,SGN - ... several formal,purchase and financial commitments with respect to ... These commitments have,come internationally, including in Japan, other ... Dr. Harmison, the Company,s President and CEO, ...
Cached Biology Technology:Oncolytics Biotech Inc. Announces Publication of Research on Immune Response to REOLYSIN(R) during a Phase I Clinical Trial 2First Patient Enrolled in SONIC I Registry of OmniSonics Medical Technologies' OmniWave(TM) Endovascular System 2Signalife Sees Accretive Purchase and Financial Commitments 2
... Clone/PAD: ZMD.257. Immunogen: Synthetic peptide derived ... human Connexin 36 protein This peptide ... to generate another Zymed polyclonal Connexin 36 ... with mouse Connexin 36. Reactivity: Mouse ...
Invitrogen's Calcium Phosphate Transfection Kit provides high-quality reagents to enable the introduction of DNA into tissue culture cells via calcium phosphate co-precipitation....
...
...
Biology Products: