Tag: "acid" at biology news

Student science contest participation influences study, career choices, alumni say

...on's project in 1994 was to look at the effects of acid rain on microorganisms that were being used by commercial waste management to degrade wastes. Working along side scientists inside a company's lab "gave me perspective on what careers were out there in the life sciences". Merson went on to d...

UCSF scientist Joe Derisi named MaCarthur Fellow

...rest over it and see where the two sets of nucleic acid match up, as indicated by the fluorescent light. The outcome reveals which, if any of the genes in the sample of interest are active. Ever interested in providing free access to scientific information, DeRisi has made a point of pos...

16 APS exercise research highlights, from reduced flu mortality to proteomics & obesity

...nce 10 days of EET increases skeletal muscle fatty acid oxidation similarly in African-American and Caucasian women, EET should work as a treatment against obesity and diabetes for both. 33.14 L. Lawrenson, et al. (University of California at San Diego) COPD patients reveal attenuated muscle plasticity...

Fortifying food with folic acid benefits babies

Adding folic acid to food can dramatically reduce the incidence of s... after the Canadian Government directed that folic acid must be added to flour, cornmeal and pasta. The study supports the continuation of this food fortifi...

New sequence involved in DNA replication timing may aid in cancer detection

...a 10-basepair sequence that is rich in the nucleic acid component, guanine. Yompakdee and Huberman named these repeats "Late Consensus Sequences" (LCS). They found that one copy of an LCS produced no detectable effect on replication timing, two copies produced a partial effect, and three copies caused rep...

Bullish chemical could repel yellow fever mosquitoes

...is up to the production of large quantities." Gaur acid is a natural skin secretion of the gaur, an Asian wild ox. Preliminary evidence suggests that this chemical discourages the landing and feeding of Aedes aegypti, a common mosquito that carries and transmits the yellow fever virus in some parts of the...

Certain genes boost fish oils' protection against breast cancer

...hown that cancer growth is suppressed by n-3 fatty acid byproducts, and the suppression is enhanced by drugs that increase lipid peroxidation. When antioxidants are introduce to battle the effects of peroxidation, though, the cancer continues to grow. "Our findings may have practical implications in treat...

Resveratrol synthase uncovered: Cyclization specificity of type III polyketide synthases

...TS) and chalcone synthase (CHS) share 75%90% amino acid sequence identity and generate the same tetraketide, but STS enzymes cyclize this tetraketide via an intramolecular C2 to C7 aldol condensation to make stilbene, whereas the CHS cyclize via C2 to C6 condensation reaction to make chalcone. A group of ...

22nd amino acid synthesized and added to genetic code of e. coli bacteria

... that they have successfully synthesized the amino acid itself L-pyrrolysine and shown that bacteria can...k is the explanation of exactly how the 22nd amino acid is incorporated into proteins inside living cells. The genetic instructions to put pyrrolysine into ...

Genetic modification of linseed produces healthier omega 3 and 6 fatty acids

...ts of the membranes of all living organisms. Fatty acid chains that are linked by single bonds between car...id to be "unsaturated". A "mono-unsaturated" fatty acid contains a single double bond within the carbon chain, whereas "poly-unsaturated" fatty acids contai...

Tips from the Journals of the American Society for Microbiology

...ranberry and oregano extracts combined with lactic acid may inhibit the growth of bacteria in meat and fish say researchers from Massachusetts. Their findings appear in the September 2004 issue of the journal Applied and Environmental Microbiology. Listeria monocytogenes, the cau...

New way to protect brain from stroke damage

...pe of the acid-sensing channels, were resistant to acid injury. To test that activation of ASIC1a is involved in ischemic brain injury in a live animal, the team tested the protective effect of ASIC blockers in an ischemic rat. Rats injected with PcTX, which is known to specifically block ASIC1a, showed a...

Folic acid vitamin use by women reaches all-time high, March of Dimes survey finds

...orted taking a daily multivitamin containing folic acid in 2004, up from 32 percent last year and the high... reason behind the increase because rates of folic acid use were also higher than expected for women not dieting (39 percent). She also said the March of D...

JCI table of contents September 15, 2004

..., which are made from the breakdown of arachidonic acid by the action of an enzyme called COX have been implicated in the development of atherosclerosis. The role of prostanoids in inflammation is well known, based on studies of aspirin-like non-steroidal anti-inflammatory drugs, which act to inhibit the...

Picking prostanoids to provide protection

..., which are made from the breakdown of arachidonic acid by the action of an enzyme called COX have been implicated in the development of atherosclerosis. The role of prostanoids in inflammation is well known, based on studies of aspirin-like non-steroidal anti-inflammatory drugs, which act to inhibit the...

Chemical signals health of brain cells Symposium

... highly abundant and nervous system-specific amino acid derivative. The different topics of discussion include: Biochemistry and cell biology of NAA Pathogenesis and treatment of Canavan disease Use of NAA as a neuronal integrity marker for neurological diseases by magnetic resonance spectroscopy ...

Images of 'tail' of protein needed for cell multiplication suggest anticancer drug targets

...ide detailed views of half of the individual amino acid building blocks making up the protein tail. This problem was overcome using a technique specially developed by Robert Cassell, a macromolecular specialist III in the St. Jude Hartwell Center for Biotechnology and Bioinformatics. By substituting a mol...

Spontaneous mutation produces new MAO A/B knockout mouse

...ed that a spontaneous mutation in a single nucleic acid base pair in the MAO A gene created a premature stop which prevented it from being made into a protein. The scientists hypothesize that the mutation was due to elevated levels of the MAO B substrate phenylethylamine in the MAO B knockout mice. Pheny...

Case for IBD combination therapy comes from research at Baylor, MIT and Hebrew University

...inflammatory lipid mediators including arachidonic acid (AA)-derived eicosanoids, lysophospholipids and platelet-aggregating factor (PAF). Due to their role in IBD, eicosanoid suppression has been considered for treatment. However, inhibition of one production pathway (say, COX) diverts the AA to the othe...

Cell's gatekeeper for ammonia revealed in unprecedented detail

...amily" of protein channels with very similar amino acid sequences and very similar functions in all specie...n Rh factors, where small differences in the amino acid sequences of the conducting machinery lead to slight differences in their channels and provide for r...

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