Max-Planck Researchers Unravel The Structure Of The Methane Forming Enzyme
...rs unravel the structure of the methane forming enzyme A team of the Max-Planck Institutes from Fra...structure of methyl-coenzyme M reductase, a key enzyme of methanogenesis that catalyzes a highly complex chemical reaction namely the reduction of a ...Increased Amount Of Enzyme In Brain May Be Marker Of Alzheimer's Disease
CHICAGO --- An enzyme present in extremely low quantities in normalbrains has been found to be greatly increased in the brains of patients withAlzheimer's disease. Alzheimer's disease researcher M.-Marsel Mesulam, M.D., and colleaguesat Northwestern University Me...Gene Therapy Trial Takes Aim At Deadly Brain Cancer
...iral agent, ganciclovir. The combination of the enzyme and virus destroys cancer cells. The treatme...en ganciclovir. The drug is activated by the TK enzyme by a process called phosphorylation. The activated drug then kills the host cancer cell by shu...DNA Enzyme Works In Crystal Form; Yields New Insights Into Gene Copying
...ochemists have made thestartling discovery that an enzyme that copies DNA in living cells can also bemade to...the finest details ofhow the intricate DNA-copying enzyme -- called DNA polymerase -- manages toreproduce DNA with the impeccable accuracy necessary for all l......structure of the hepatitisC virus NS3 helicase, an enzyme that plays a key role in viral replication. Theac...helices. "The atomic structure of the HCV helicase enzyme shows several unique featuresthat we believe will provide opportunities to accelerate our ongoing ef......he 3-D,atom-by-atom structure of a DNA-replicating enzyme at work. This protein, calledT7 DNA polymerase, is...ingle-stranded DNA, and thus helps explain howthis enzyme achieves its high accuracy of about one mistake per millionnucleotides. Mistakes cause mutations and...'Rolling Circles' Provide New Way to Amplify and Detect DNA
... created by arolling circle simply by varying the enzyme or the duration of the reaction," he notes. The technology relies on tricking the polymerases that copyDNA strands. These enzymes start at one end of a strand and workuntil they reach the other end. But Kool's strands are circular,not linear ......and function. Duringeach round of replication, the enzyme telomerase is responsible for themaintenance of these chromosomal ends. This book: draws together contributions from an interdisciplinary and international groupof specialists concerned with research on all aspects of telomeres andtelomerase include...Gene For Inherited Syndrome Is Possible New Tumor Suppressor
...artled to find that the PJS geneproduces a type of enzyme known as a protein kinase. "This surprised us," said de la Chapelle. "As far as we know, this is the firsttime a protein kinase gene has been identified as atumor suppressor gene." Cells have genes for many types of protein kinase enzymes, and some o...Infants, Toddlers Should Not Restrict Fat Intake, Experts Say
...t high fat content in breast milk may suppress the enzyme that causes the body to synthesize cholesterol early in life. The reason would be that if dietary fat is high enough, then the body would not need to produce more of its own. But if the fat isn't there early in life, the body begins producing excess ......vascularization. "Our findings show how an enzyme that promotes angiogenesis can benaturally cleaved...that inhibits this process. Wedetermined that this enzyme fragment likely plays a role in normal blood vesseldevelopment. Thus, by taking advantage of this kn...At Life's Most Sensitive Stage, Embryos Cope With Stress
...rescue mechanism, based on the work of a DNArepair enzyme called photolyase. Frog eggs from species with the greatestphotolyase activity are the ones most likely to survive a blast of UV-B light,Kiesecker and Blaustein found. However, the researchers also have identified afungus that appears to act synergis...Williams Biology Prof. Receives NSF Grant For Work On dUTPase
...r work ondeoxyuridine triphosphatase (dUTPase), an enzyme involved in DNA metabolism. Roseman uses the va...the biochemistry of dUTPase. Because the vaccinia enzyme is verysimilar to its human homologue, it is an excellent system in which to study thedUTPase enzyme...Duke Researchers Develop First Treatment For Rare Muscle Disease
...ition called Pompedisease. The injectable enzyme treatment was developed by Duke pediatric medicalg...efect that results in a deficiency in an essential enzyme called acid alphaglucosidase (GAA). Normally the GAA enzyme helps the body break down stored..."Genes, Vitamins, Homocyst(e)ine And Cardiovascular Diseases"
...=143). Subjects weresorted by the genotypes of an enzyme [methylenetetrahydrofolate reductase(MTHFR)], which catalyzes the synthesis of the active form of circulating folicacid in blood. The frequency of homozygotes "wild type" (C/C in nucleotide 677of the gene) was about 40%, of heterozygotes (C/T) about...Genetics May Explain Much Age-Related Hearing Loss
...essened orprevented in the future by regulating an enzyme that neutralizes free-oxygenradicals, destructive ...genes responsible forproduction of the antioxidant enzyme superoxide dismutase, or SOD, the UBresearchers showed that age-related hearing loss was greater and...Amphibian Mortality Due To UV Radiation
...rmore, amphibian species havevarying amounts of an enzyme called photolyase, which is the principal enzymefor repairing UV damage to DNA. Photolyase attacks a major UV photoproduct inDNA -- cyclobutane pyrimidine dimers -- which can cause mutations and cell deathif left unchecked. Kiesecker, a zoo...Lactose-Intolerant People Should Drink More Milk, Expert Says
...are situation where there is a genetic lack of the enzyme from birth." Savaiano says milk allergies appears in 5 percent of newborns, but that almost all infants outgrow this allergy by their first birthday. "The best way to deal with this is to continue breast feeding," he says....Long-Standing Puzzle Of Immune System Is Solved By UCSF Researchers
...er within the body by subvertingthe function of an enzyme that normally is used to repair mistakes --called...spect thata defect in the gene encoding the repair enzyme resulted in a failure torepair harmful mutations, thereby contributing to the growth of thesetumors.......e resorptionand production of acid phosphatase, an enzyme produced by osteoclasts that helpsdegrade bone. Pr...ies in theregulation of nitric oxide synthase, the enzyme responsible for making NO; therelationship of osteoclasts to defense mechanism cells called inflamma...