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Tag: "cooperate" at biology news

Study shows lizard moms dress their children for success

...les; and blue-throated males form partnerships and cooperate to protect their territories. In females, throat color correlates with different reproductive strategies. According to Lancaster, the maternal effect on back pattern is important because survival in these lizards depends on different combinations ...

Ants show us how to make super-highways

...t individuals size-match to the hole they plug and cooperate to plug larger holes. "We did this by getting the ants to literally ‘walk the plank’, said Powell. "We inserted planks drilled with different sizes of hole into the army ants’ trails to see how well different sizes of ant matched different sizes of ...

DNA repair proteins monitored at double-strand break

...1 recruits ATM to the break; and that ATM and NBS1 cooperate to disrupt nucleosomes—the compact packages formed when strands of DNA wind around proteins, called histones, like thread around a spool. Disruption of the nucleosome at the site of a double-strand break allows the DNA to unravel and expose the area ...

Man's best friend lends insight into human evolution

...ut the intentions of other individuals in order to cooperate in complex tasks is a basic part of everyday life that we humans take for granted. But, according to evolutionary psychologist Brian Hare at the Max Planck Institute in Germany, this ability is present in other species as well. As Hare discusses in ...

Mine runoff continues to provide clues to microbial diversification

...tigating the complexity of how bacterial consortia cooperate and compete in nature. In fact, ORNL mass spectrometry provided the ability to resolve and differentiate peptides that differ by as little as one amino acid. Nathan VerBerkmoes of the lab’s Chemical Sciences Division was instrumental in designing ...

Scientists uncover new target in cancer mutation puzzle

...how Ras and p53 or any other potent gene mutations cooperate to cause malignant tumors," said Land, who is professor and chair of the Department of Biomedical Genetics and scientific director of the James P. Wilmot Cancer Center at the University of Rochester Medical Center. "But we have suspected for a long t...

Linking DNA and histone methylation

...uchromatic gene silencing, how these two processes cooperate to induce silencing has remained unresolved. In their upcoming paper, Dr. Carey and colleagues detail that mammalian HP1 proteins facilitate this cooperation. They found that HP1 proteins, which bind to methylated histones, also interact with the...

Slow brain waves play key role in coordinating complex activity

...cooperating on one task, then they switch over and cooperate on another task," said UCSF's Kirsch. "On the fly you want to link these areas to do a task, and when the task is over, you want to decouple them and let them link up with someone else. Ryan has shown that the theta waves allow this coupling and unco...

St. Jude finds clues to hearing loss from chemotherapy

... might disrupt the work of a cascade of genes that cooperate to construct certain nerves or sections of the inner ear that sense sound; that stimulation is then turned into electrical impulses that go to the hearing center of the brain. Understanding how a specific mutation disrupts that cascade might lead to ...

New genetic analysis forces re-draw of insect family tree

...gether - suggesting that the ability of insects to cooperate in social groupings may have evolved just once, rather than independently in several different species. "About half of all animal species belong to just four groups of insects but, surprisingly, we never knew for sure how they are related to ...

Key gene controlling eye lens development identified

... the activity of a series of additional genes that cooperate to form the lens. A report on this work appears in the prepublication online issue of The EMBO Journal. Previously, the researchers were not able to address the gene's possible role in mouse eye formation because inactivation of Six3 significantl...

Nice guys do finish first in lizards' evolutionary race

...thors. "The question then is why do some organisms cooperate when it seems like being selfish should be the best strategy?" Turns out, it's all in the genes. For two decades, Barry Sinervo from the Department of Ecology and Evolutionary Biology at University of California ?Santa Cruz (the study's lead autho...

Newly identified protein complex sheds light on axon growth mechanism

...mbinations, the authors show that the two proteins cooperate to regulate axon development. The authors also show that UNC-69 is needed for the formation or maintenance of new synapses. It is known that UNC-76 binds to molecular 'motor' proteins called kinesins that transport vesicles along growing axons. Heng...

Genetic defenders protect crops from fungal disease

...guarding a castle gate, multiple genetic defenders cooperate to protect plant cells against powdery mildew disease, according to a new study. Powdery mildew is a common fungal infection in plants that attacks more than 9,000 species, including many crops such as barley and wheat, and horticultural plants such ...

Researchers learn how blood vessel cells cope with their pressure-packed job

...esults clearly show that Rho and physical stresses cooperate to produce healthy alignments of stress fibers," said Chien. "We need to understand how cells can sense the mechanical force and achieve this beneficial effect through the activation of Rho, and we also need to identify other proteins that may be inv...

Researchers make surprise discovery that some neurons can transmit three signals at once

...including how GABA, glycine and glutamate synapses cooperate to activate NMDA receptors. In the traditional sense, when inhibitory synapses are mature, they would never release glutamate, nor would they be able to depolarize a cell, both of which are required for NMDA receptor activation. But, as if by design,...

Yeast Network Prevents Damage By Oxygen Radicals

...erized. We've now identified a group of genes that cooperate to suppress DNA mutations and the genome rearrange...h strain were then analysed to identify genes that cooperate to prevent the deleterious effects of ROS and promote normal cell survival. "These results suggest ...

Two are better than one

...a synergistic action, the antibodies were shown to cooperate rather than compete for distinctly different attachment points on the architecture of the receptors, resulting in the assembly of a large, springy molecular scaffolding between the receptor towers. The interlocking system grips and pulls the receptor...

Molecular Motors Cooperate In Moving Cellular Cargo, Study Shows

...t shuttle material within living cells. The motors cooperate in a delicate choreography of steps, rather than engaging in the brute-force tug of war many scientists had imagined. "We discovered that two molecular motors -- dynein and kinesin -- do not compete for control, even though they want to move the sa...

TEL2 gene cooperates with MYC gene to provoke B-cell lymphomas

The genes TEL2 and MYC cooperate with each other to promote pediatric cases of the immune system cancer B-cell lymphoma. This finding, from investigators at St. Jude Children's Research Hospital, is published in the current issue of Molecular Cell Biology (MCB). B-cell lymphoma is ...

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