Baker's Yeast Causes Chemical Reactions And Sweet Smelling Labs
...emists," said Stewart. The designer yeast enzyme eliminates those concerns and costs about thesame ...cells are special in their ability to makeoneextra enzyme to act as its own co-factor, yet still remain biodegradable.Stewart said the yeast is easy to ship i...Gene Variant Found That Can Help Protect Against Nicotine Addiction
... individuals with a geneticvariant in a particular enzyme break nicotine more slowly than those who do not. ...ucts, is metabolized orbroken down primarily by an enzyme in the liver known as CYP2A6. In this study,University of Toronto researchers, led by Dr. Rachel F....Genetic Defect Protects Against Smoking
... a method tochemically inhibit the function of the enzyme produced from the gene -- aprevention and treatment for tobacco smoking, in other words. That is the nextstep," said Sellers, a professor of pharmacology and medicine at U of T anddirector of the psychopharmacology and dependence research group at W...New Strategy Discerns Early Stages Of HIV Infection, Paving Way For Targeted Study And Therapy
...ck. They modified the existingHIV test, called an enzyme immunoassay, to make it less sensitive than theori...icity,"Chesney reflected. The modified form of the enzyme immunoassay test, currently available only incertain locations, will be used routinely by the San Fr...Pharmacologists Discover Linkage Of Key Cell Switches
...archers reported discoveringthat the linkage of an enzyme called a kinase -- which turns on cell processesby...o another protein -- itself is regulated byanother enzyme called a phosphatase that is attached to it. Phosphatases areenzymes that remove phosphates from oth...Scientists ID A Protein With Punch As Infection-Inflammation Fighter
.... Leto is an acknowledged expert in the neutrophil enzyme system thatgenerates the free radical oxygen," Ross said. Said Blecha, "The fact that Dr. Leto and others have repeated our work andextended our results adds a great deal to the credibility of this project. Theirefforts make it a collaborative study ...Scientists Identify New Gene That Controls Sleep/Wake Cycle
...he double-time gene and found that it producedan enzyme called a kinase, a protein that phosphorylates, or places phosphatemolecules on, other proteins. Scientists have known for some time that PERproteins are phosphorylated with a rhythm. In the double-time mutants, however,PER proteins are overproduce...Researchers Identify A Protein Critical For T Cell Development And Activation
...striking about this molecule is that it isn't a an enzyme like most ofthe other molecules in the signaling pathway. It is an adapter protein,"Koretzky said. Adapter proteins bind proteins together. They don't catalyzereactions like enzymes, but they can enhance reactions by creating a bridge thatbrings prot...Dismantling Dangerous Genetic Codes With A Faster, More Flexible RNA Mimic
...curring ribozymes, andcan be made to better resist enzyme degradation as well. "We wish nothing but success for natural ribozymes as potential drugs," saysBashkin. "But we believe that it is vital to provide an alternative that mayhave significant advantages in drug development." Benchmark For All Catal...Studies Suggest Cold Can Protect Valuable Papers
...elf lifeeven more. "We have been studying enzyme reactions and the natural process thatbreaks down covalent bonds which hold together compounds corresponding to thesugar building blocks of starch and cellulose," said Dr. Richard V. Wolfenden,Alumni Distinguished professor of biochemistry and biophy...Scientists Discover New Players On The Gene-Activation Team
...cently Workman's lab also characterized a powerful enzyme calledSWI/SNF that overpowers the histone proteins...acetyltransferase complex (HAT), which contains an enzyme called Gcn5 thatremodels nucleosomes by attaching a chemical group called an acetate,"Workman says. ...Study Shows Aspirin Blocks "Plant Pain"
...g and pain. Aspirin binds to the activesite of the enzyme that is critical to producing prostaglandin. "It essentially renders the enzyme dead and prevents prostaglandins frombuilding up and creating a reaction," said Backhaus. In plants,...... knockout mouse that establishes a keyrole for the enzyme Caspase-9 in a specific biochemical pathway that r...hat using compoundsthat block Caspase-9 or another enzyme in this pathway may be a viable strategyfor treating neurological diseases that involve apoptosis." ......d on human platelets, explored the way in whichthe enzyme known as thrombin, one of several factors known to...ed receptor in themembrane of the cells. When the enzyme (a protease) binds to the receptor, itinstigates the transmembrane signaling that prompts platelet a...New Evidence Shows How Some Flu Viruses Become Lethal
...fore the virus can infect a cell.The virus uses an enzyme from the cell it is invading to clip the protein. The enzyme that acts as a "scissors" is normally localized inrespiratory organs, which confines the virus to th......cruzi from replicating by 3turning off2 a specific enzyme critical to theparasite1s survival -- much like aspartate protease inhibitors work againstHuman Immunodeficiency Virus (HIV). Because cysteine and aspartate proteaseinhibitors function in similar ways, the researchers are optimistic about thedrug1s...Study Finds Evidence Linking The Brain's Cognitive Control Regions With Stress Control Regions
...rchers used snippets of antisense RNA to locate an enzyme calledglutamic acid decarboxylase (GAD) in the bra...obutyric acid (GABA). Two forms of the GAD enzyme exist: GAD65, the stored form and GAD67,the rapidly released form. Each form responded differently...Ancient "Jumping DNA" May Have Evolved into Key Component of Human Immune System
...t RAG1 and RAG2 work together as a transposase, an enzyme thatsnips pieces of DNA out of one location in a chromosome and transposes thesepieces elsewhere. This ability to slice and recombine genes accounts for the"split nature" of antibody and T-cell receptor gene DNA, allowing vertebrates tocreate million...Enzyme's Structure Yields Blueprint For Antibiotic Resistance
...nd a cylinder." Named in part for its function,the enzyme promotes the transfer of an acetyl group from a do...n. Other important acetyltransferases abound. One enzyme with the same fundamentalstructure is responsible for the final chemical step in synthesizing aneuro...Structure Of Enzyme Involved In Gentamicin Resistance Revealed For First Time
...as determined thethree-dimensional structure of an enzyme responsible for resistance of certainbacteria to t...ance. "Our structure of this antibiotic-resistance enzyme reveals how remarkablysimple proteins can present life-threatening problems for critically illpatien...