residue

NYU and MSKCC research provides model for understanding chemically induced cancer initiation

...n intercalated structure in which the carcinogenic residue is sandwiched between adjacent base pairs in the double helix. "Such conformational differences in methylated and unmethylated DNA sequences may be significant because of potential alterations in the cellular processing of these lesions by DNA trans...

It's electric: Cows show promise as powerplants

...lly leaves behind plenty of it in the form of crop residue in the fields. The other chamber, the cathode, was filled with potassium ferricyanide, a chemical that acts as an oxidizing agent to round out the electrical circuit. Two small pieces of plain graphite served as the fuel cell's electrodes (an elect...

New discovery: If it weren't for this enzyme, decomposing pesticide would take millennia

...In contrast, the half-life of the potato pesticide residue chloroacrylate -- 10,000 years -- matches the half...tory by analyzing what happened to the pesticide's residue at various temperatures and then extrapolating the results to room temperature to see how long the p...

New technique helps researchers determine amino-acid charge

...eagues used protein engineering. They mutated each residue of the pore's lining with basic amino-acid residue..."One thing is the proton affinity of an amino-acid residue when the amino acid is dissolved in a lot of water in, say, a glass beaker; another thing is the aff...

'Computer-chemistry' yields new insight into a puzzle of cell division

...g "mutant" versions of a protein in which a single residue is altered and lab-testing whether the resulting s...he two hot spot residues the study identified, one residue on the phosphatase and the other on the kinase. Both hot spots are located some distance from the mo...

Mosquito spray increases toxicity of pyrethroids in creek, study finds

... sun for a day or two to let the pyrethrin and PBO residue degrade rather than send the runoff into the creeks. ...

UCLA scientists strengthen case for life more than 3.8 billion years ago

...hich is approximately 4.5 billion years old. The residue of ancient life that the scientists believe they have found existed prior to the end of the "late heavy bombardment" of the Moon by large objects, a period which ended approximately 3.8 billion years ago, Harrison noted. "Life is tenacious, and it ...

Mayo discovers protein as potential tactic to prevent tumors

...is. CDK2 adds phosphorylation to a specific serine residue on the chain of amino acids that make up FOXO1. In case of robust errors found in the genetic code, CDK2 signals FOXO1 to explicitly call for the cell to produce a set of proteins leading to apoptosis. "If the cell has minor alterations in the DNA...

Rearing an army to save wheat

...ulation in an infested wheat field using the straw residue from a single mass-rearing cage. Mass-rearing of the parasitic wasps is only one of three or four approaches for sawfly management that are being pursued at MSU. The drought conditions of recent years have made the work more pressing, since drough...

Protein found to shield pancreatic cancer cells from self-destruction

...hing inside is consumed, leaving the vacuole and a residue of digested material. If enough of this happens, the cell dies. Gabriel Lopez-Berestein, M.D., professor of experimental therapeutics and study co-author, notes that the research also shows that the self-consuming cell death prevented by TG2 is in...

The chimpanzee stone age

... types of starch grains on the stones; part of the residue derived from cracking local nuts. The tools are 4300 years old, which, in human terms, corresponds to the Later Stone Age (PNAS, February 2007). Before this study, chimpanzees were first observed using stone tools in the 19th century. Now, thanks...

Darwin's famous finches and Venter's marine microbes

...tion, Kannan was able to show that loss of one key residue could be compensated by changes around other conserved regions of the protein, and that some of these changes in bacterial kinases are also seen in specific human kinases. Says Manning, "By looking at all these very distant microbial relatives we ...

Loss of a universal tRNA feature reported

...NAs have always been found with an extra guanylate residue at the 5' end of the tRNA molecule. The scientists, led by Kelly Williams of VBI, have shown that tRNAs carrying the amino acid histidine in the alphaproteobacteria Sinorhizobium meliloti and Caulobacter crescentus apparently lack the universal guany...

Spreading viruses as we breathe

...ponent of the droplet dries in the air and the dry residue travels large distances. "When a droplet dries in the air the residue is carried in the air, and therefore there is a risk that people can inhale that air and become infe...