Tag: "coli" at biology news
Role Of Protein Linked To Colon Cancer Identified, Offering Potential Target For Therapy
...umor-suppressor gene known asadenomatous polyposis coli
(APC) occurs in the majority of human colon cancers,and several years ago researchers discovered that the mutated gene leads to theactivation of the beta catenin protein. "Now we have identified at least one consequence of APC mutation," saidMcCormic...
Emory University Scientists Demonstrate New Pathway For Genetic Mutations In Everyday Cell Life
...the luciferase gene into two different types of E. coli
cellsalong with a special chemical that kept the cells from dividing. They thenaltered the luciferase gene by substituting uracil for cytosine. One kind of E.coli cell was able to repair the uracil lesions, but the other one lacked theappropriate ...
Scientists Show Proteins Function Individually As Part Of DNA Repair
...ses act with one or more partners. Working with E. coli
bacteria,which are simpler to study because they are single cell organisms and have fewergenes, the UNC-CH researchers found that some DNA helicases can operate alone.Findings in bacteria often apply to humans because gene repair in both speciesis si...
Breakthrough On Microbial Disease Published In Science
...d cows to develop Salmonella -free poultry and E. coli
-free beef. Such vaccinesare sorely needed as the level of contamination in the food supply is expectedto worsen due to large scale animal processing and distribution practices,according to Mahan. "We are proud of professors Mahan, Sinshei...
Discovery Of Mechanism Causing Colon Cancer
...case, a mutation is found in adenomatous polyposis coli
(APC), a well-known tumor-suppressor gene that is mutated in about 90% of colon cancers. APC's major role in the cell is to reduce the level of beta-catenin. When the APC gene is mutated, beta-catenin accumulates to high levels and enters the nucleus...
Top Experts To Address Top Food Safety Concerns At IFT Meeting
CHICAGO -- Listeria monocytogenes. Escherichia coli
O157:H7. Antibiotic-resistantpathogens. Mad cow ...hogens from developingantimicrobial resistance, E. coli
O157:H7 in fermented sausages, and U.S.regulatory policy concerning L. monocytogenes. Ways to keep ...
SFVAMC-UCSF scientists solve a key protein structure
...h of the protein, the researchers turned to the E. coli
bacterium, whichwas genetically manipulated to produce fumarate reductase in large amounts. Fumarate reductase is closely related, and very similar to succinatedehydrogenase, which is the human Complex II. "Our results are especiallysatisfying becau...
CU-Boulder to send experiments ranging from ladybugs to water quality on NASA shuttle
...e stress-induced immune system deficiencies and E. coli
poisoning,said Klaus. Additionally, BioServe will fly a protein crystal experiment sponsored byBioSpace International of College Park, Md., in hopes of improving drug designbased on higher resolutions of three-dimensional molecular structures....
KSU microbiologist uses microwave, acid treatments to kill pathogens, maintain color in meat
...till have that sickening and potentially deadly E. coli
0157:H7bacteria. A Kansas State University food mi...robiologist says most of these methods toreduce E. coli
occur on the front end of the processing procedure. Once thecarcass is sliced into smaller portions,...
Congress briefs: International congress on ecosystem health
...disease-causing agents as the potentially fatal E. coli
0157:H7,Salmonella and Cryptosporidium parvum. People working in vegetable-growingfields where manure is applied are at increased risk for contracting diseasesthat can be passed from animals to humans. Cliver will explain varioustreatments and stor...
Simulating protein folding from physical laws
...folding of the protein HDEA from the bacterium E. coli
onCornell's IBM supercomputer and predicted a structure consisting of a bundle offive spiral coils that matched 80 percent of the structure found by X-raycrystallography. It was the best match of several computer-generated structuresfor the protein...
DNA: A sloppier copier
...ces seen at sites of DNAreplication in Escherichia coli
bacteria exposed to ultraviolet light.The team has established that the complex is a DNA polymerase, the fifth DNAreplicating enzyme to be identified in the organism. The new enzyme, named "pol V," differs in two significant ways from pols I, IIand I...
Cinnamon is lethal weapon against E. coli O157:H7
When cinnamon is in, Escherichia coli
O157:H7 is out. That's whatresearchers at Kansas ...vealed that cinnamon is a lethal weapon against E. coli
O157:H7 and may be able to help control it in unpasteurized juices. Lead researcher Erdogan ...
Scientists image key steps in bacterial infection
...t 10 years, Hultgren's group has determined how E. coli
makes stickyhairs called pili, which many other ty...ne -- it primes the immune system to disarm any E. coli
that carrythe same protein. Hultgren also has been collaborating with a drug developmentcompany to d...
LSU Ag Center researchers look for better ways to assess pollution in Tangipahoa River
...an indicator of the others,"Achberger says. "If E. coli
is present, then other pathogens are, too. "We'...hes. The standard for drinking water is zero E. coli
while the standard forprimary contact recreational use, such as swimming, is not more than 200 avera...
Biosensor expected to improve food safety
...s of multiple pathogens -- including the deadly E. coli
0157:H7 andSalmonella -- in food products in less ... bacterial species for now. They areSalmonella, E. coli
0157:H7, generic E. coli, Listeria monocytogenes,Campylobacter jejuni and Yersenia enterocolitica (f...
CU studies suggest exercise protects body against negative effects of stress from brain to cell
...ted that stress in sedentary rats infected with E. coli
bacteria reduced the amount of inflammation initially caused by the bacteria, said Fleshner. But stressed rats that had been regularly running on a wheel and then infected showed an increase in bacteria-attacking white blood cells migrating to the i...
Scientists discover how cells 'catch' a cold
...ive forms of the viral and cellular proteins in E. coli
bacteria. "These small purified protein fragments bind tightly to each other in the test tube, and provided the raw material to initiate structural studies,"Freimuth says. To determine the molecular structure of the virus/receptor complex, the scien...
Study: Commercial disinfectants effective, natural products less so
...occus aureus, Salmonella choleraesuis, Escherichia coli
0157:H7, Pseudomonas aeruginosa, poliovirus, and vancomycin-susceptible and -resistant Enterococcus species. They then cultured the microbes to see how many remained. While the commercial products killed almost all germs, in some cases the vinegar...
Increased production of antibiotics in space reported by University of Colorado researchers
... faculty. In a related experiment, samples of E. coli
bacteria also grew better and more efficiently during the flight than the samples in the ground-control experiment. "The bacteria essentially grew more and consumed less nutrients -- in this case glucose -- indicating a higher metabolic efficiency i...
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