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Tag: "built" at biology news

Mapping the protein world

...culations by hand. Today macromolecular models are built by computers ?thanks to sophisticated software and in particular a package called ARP/wARP. Developed by Victor Lamzin at the Hamburg Outstation of the European Molecular Biology Laboratory (EMBL) and Anastassis Perrakis at the Netherlands Cancer Ins...

Snakes' virtual glasses, leopard spots and all-optical transistors

...puters and communications. But all-optical devices built in the past have been far too large and power hungry to be practical. Physicists at the Queen's University in Belfast appear to have solved the problems with a prototype optical amplifier that is both small and low power. The key to the device is a l...

The molecular post office inside the cell

...l. The SRP reads the sequence as soon as the newly built protein chain leaves the ribosome. The SRP binds to the ribosome and directs it, together with the SRP receptor, to what is called the "translocon complex" in the membrane of the endoplasmic reticulum. The translocon complex is made of a "protein con...

One-dimensional diffusion accelerates molecular motors

...bules; which are tiny protein polymers that can be built up and torn down like scaffolding. They also make up "tracks", along which motor proteins pull the halves of chromosomes into existing daughter cells. Until now, scientists have not known how the length of microtubule gets regulated, nor how the prot...

Proteins as parents

...dy been intensively researched. Both are similarly built and are composed of the protein segments A, A', as well as B to G. The researchers interchanged several fragments of the genes that encode I27 and I32 ("DNA shuffling"). Genetically they produced four different protein "children": an I27 with the A'/...

Quick -- what’s that smell?

... visual sensory processing. Modern MP3 players are built based on a deep knowledge about properties of our hearing capabilities. Similarly, increased knowledge of olfactory processing has the obvious potential to open many doors, perhaps including development of electronic olfactory systems that would have...

No cell walls, no new cancer cells

...ls. And as with a house, the cell wall needs to be built at just the right moment to protect and allow the construction of internal components. A team from the Uppsala Branch of the global Ludwig Institute for Cancer Research (LICR) has not only shown how the cell gets this timing right, but has also condu...

Biological motors sort molecules one by one on a chip

...mely small channels on a chip. Based on this, they built a transport system that uses electrical charges to direct the molecules individually. To demonstrate this, the Delft researchers sorted the individual molecules according to their color. Professor Hess of the University of Florida has called the Delf...

'LEGO-Like' building blocks to halt cell growth wins Hebrew University prize

...says that many different types of molecules can be built that will reach specifically targeted cells, offering hope for treatment of not only cancer, but other diseases as well, without harming healthy cells. ...

K-Staters design and build a low-cost remote sensing tool for environmental studies

... fuselage. A K-State graduate student designed and built an autopilot for first phases of the project. However, the researchers have opted for incorporating a commercially available autopilot so the sensing tool can be reproduced easily by others. "This will be very easy to use. Its weight and size allow ...

Copying nature could save us energy, study shows

...d behaviour; the solutions to problems are already built in. "An example might be a hammer," said Professor Julian Vincent from the University of Bath who led the research . "A man-made hammer has a very heavy head, so that it is heavy to carry around and lift but can do a lot of work with one hit. It r...

Beaver dams create healthy downstream ecosystems

... for hundreds of meters [yards]. In addition, dams built on the river changed the direction of groundwater ...ty to the valley bottom. Additionally, beaver dams built away from natural river channels further redirect water across the valley, enhancing the depth, exte...

'Cellular antennae' on algae give clues to how human cells receive signals

...aid. Normally, cilia ?also called flagella ?are built and maintained by an internal bidirectional, escalator-like system that ferries molecules to and from the tips by a process called intraflagellar transport, or IFT. The UT Southwestern researchers used a mutant temperature-sensitive strain of the a...

Most widely used organic pesticide requires help to kill

...ning and death. "It was one of those assumptions built on assumptions -- a scientific house of cards," explains one of the report's authors, Jo Handelsman, of the long-held view of Bt's mode of killing. "What was proposed as a hypothesis in one paper became cited as proven in another and no one seemed to...

Winning by a neck -- Giraffes avoid competing with shorter browsers

... leaves grow at higher levels. The researchers built low fences around trees in greater Kruger National Park to stop smaller browsers from eating leaves. After a complete growing season they found that the number of leaves on the fenced trees was roughly the same, revealing that small browsers are resp...

Plutonium or greenhouse gases? Weighing the energy options

...lobal warming, Ewing said. Even if they could be built and brought online quickly, that many power plants would generate tens of thousands of metric tons of additional nuclear waste annually. "The amount that would be created each year would be equal to the present capacity anticipated at the repository ...

Study: Living coral reefs provide better protection from tsunami waves

...ty in a very tangible way," he said. "Villages get built behind coral reefs for good reasons, and this is one of them." Kunkel said that she hoped the study would inspire other scientists to continue the research by obtaining more observational data. Incorporating such data into the team's theoretical mo...

Nerve cell software keeps track of brain change

... was developed by CSIRO's Biotech Imaging team who built on mathematical software code libraries from many years of image analysis research and added a user-friendly, database-supported interface. "We're working with a leading Australian brain research institute to thoroughly validate HCA-Vision. The res...

Ferns provide model for tiny motors powered by evaporation

...ience and principal investigator in the group that built the device. "If you build these things they will move. The key is to show that you can generate electricity from this." As often happens, the research started while doctoral student Ruba Borno was exploring another idea entirely. Borno was interest...

Molecular 'signature' protects cells from viruses

...arsenal of proteins. The instruction what is to be built comes from the cell nucleus: this is where the DNA is stored, the heredity molecule in which, so to speak, the construction blueprints for all cellular proteins are stored. If a particular protein is to be produced, the appropriate command is 'copied...

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