Tag: "segments" at biology news

Amyloid fibers sprout one step at a time

...ith one fluorescent molecule. When shorter amyloid segments or monomers are tagged with a fluorescent molecule of a different color and added to the immobilized fiber, researchers can watch the growth of the fiber. The analytical approaches revealed that the yeast amyloid fibers grow by the addition, one by ...

Israeli scientists reveal the plan of a key cellular machine

...r protein formation are interspersed with "filler" segments that have no known function, scientists have worke...huge diversity of proteins in the body by allowing segments of the genetic code to be strung together in different ways, takes place in the spliceosome as well....

Study by Israeli scientists provides insight on DNA code

...r protein formation are interspersed with "filler" segments that have no known function, scientists have worke...huge diversity of proteins in the body by allowing segments of the genetic code to be strung together in different ways, takes place in the spliceosome as well....

Heart gene yields insights into evolution, disease risk

...studies, said Rockman, should include not just the segments of genes that code for the structure of proteins t...ude the evolutionary processes that shape the gene segments that regulate a gene's activity. Thus, in their study, Wray, Rockman and their colleagues explored t...

NHGRI launches Centers for Excellence in Ethical, Legal, and Social Implications Research

...e will be the development of methods to inform all segments of society about technological advances, and to improve the mechanisms for obtaining input from diverse populations to help to identify and assess policy options for addressing these challenges. In addition to funding these four centers of excel...

Researchers uncover secrets of immune system's munitions factory

...eaminase (AID) triggers mutations of antibody gene segments to produce an assortment of antibody proteins. Thi...ely random mutations in the genes for the antibody segments that recognize antigens. These mutations occur about a million times more frequently than spontaneou...

Researchers find clues about how antibodies specialize

...which antibodies are made. Mutations in these gene segments to the so-called variable regions -- give our B cells the ability to make unique, specialized antibodies with high affinity for a specific invader. This mutation process, known as somatic hypermutation, is known to require an enzyme called activat...

Using statistics to decipher secrets of natural mutation

...t to compare the sequences of corresponding genome segments from 19 mammalian species, including human, horse,...Hwang and Phil Green excluded the genes from those segments and compared what was left. According to Green, the comparison of context-dependent mutation in the...

U-M scientists find common virus in human prostate tissue

...tate samples analyzed for the study contained gene segments from the BK virus. TAg protein from the BK virus was present in 43 percent of the tissue samples, but only in atrophic lesions a precursor stage of prostate cancer development. TAg was not expressed in normal cells or cancerous cells. "At...

Plant pathologists meeting in Anaheim, CA to discuss agricultural security, food safety, and more

... TimeOrganic farming is one of the fastest-growing segments of U.S. agriculture, with organic food sales reaching $9.3 billion in 2002. This session will examine organic agriculture from a plant pathology perspective and address questions regarding funding sources for organic agricultural research, plant dise...

Double-segment periodicity underlies 'odd' segment generation in centipedes

... groups of cells are patterned or arranged to form segments in the developing embryo, researchers have identif...t of north-eastern Scotland, and looked at how the segments of this animal are formed. The number of segments in individuals of this species varies from 45 to 5...

Significant strides in small regulatory RNA research in plants

...RNAs, which have sequence complimentarity to short segments of protein-coding genes, are encoded in regions of the genome distinct from other recognized genes. miRNAs function similarly to small interfering RNAs (siRNAs) which are equivalently sized, tiny RNAs that target viral genomes, transposons, and other...

Experiment station researcher looking for missing links in corn

...utrition, it would vastly improve feeding costs in segments of animal agriculture by reducing the need of better protein supplements, Betran said. "Corn is mainly used for animal feeding in the United States," Betran said. "About 65 percent goes into animal feed. If you feed poultry the same corn, you need t...

Plant pathologists to discuss the future of organic farming

...4) Organic farming is one of the fastest-growing segments of U.S. agriculture, with organic food sales reaching $9.3 billion in 2002. To ensure continued prosperity of this rapidly expanding industry, plant pathologists with The American Phytopathological Society (APS) are calling for additional organic far...

Tiny tango: Device sorts microscopic particles with speed and precision

...cles ranging in size from bacterial cells to large segments of DNA and reported their results in the May 14 is...ccording to Cox. A primary use could be in sorting segments of DNA according to their length, which is a key step in genome sequencing efforts. Another use may ...

Plant pathologists to meet in Anaheim, CA to discuss agricultural security, food safety, and more

...ket Organic farming is one of the fastest-growing segments of U.S. agriculture, with organic food sales reaching $9.3 billion in 2002. This session will examine organic agriculture from a plant pathology perspective and address questions regarding funding sources for organic agricultural research, plant dise...

Surprising 'ultra-conserved' regions discovered in human genome

...served than we would have imagined. We think these segments evolved in the past, then froze into place and wer...agreement, which uncovered the 481 ultra-conserved segments that were the focus of this research. Looking beyond the human, mouse, and rat genomes for earlier ...

2004 Max Planck Research Prize for Martin Vingron and Eugene W. Myers

...developed methods for stringing together the small segments (clones) of DNA that are generated during the sequ...s who recognized that the problem of locating gene segments in the right order (assembly) could be solved by first selecting the clones according to their lengt...

Kinase backgrounder: Iressa discovery part of major kinase project at Dana-Farber

...s, checking for quality, isolating the kinase gene segments of interest, and preparing them to be deciphered by the Whitehead robots. Much of this work is performed in Sellers' laboratory by postdoctoral fellow Guillermo Paez, PhD, whose computer screen saver is a colorful molecular diagram of a tyrosine kina...

Dietary supplement shows promise for improving immune function in the elderly

...munity and innate immunity. Although all of these segments of the immune system are affected by the aging process, investigators have most consistently identified abnormalities in the cellular or T-cell mediated immune function in the elderly. The decline in T-cell immune function is generally associated wit...

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