2017年3月30日星期四

Sirtuins family and the role of mitochondria in health and disease is well known

With protein entering the people's vision, sirtuins has caused people's attention through its relation with aging and age-related diseases. Sirtuins family and the role of mitochondria in health and disease is well known. Based on a basic survey involving recombinant rat proteins, Marcia Haigis and her Harvard Medical School team presented a profound molecular question: what proteins are associated with sirtuins in cells?

Scientists have created a picture of the interaction of proteins - in mitochondria - found that sirtuins interact with the energy source of cells. Then they used the diagram to reveal how a particular sirtuin works with its protein to keep the cell motivated. Haigis, an associate professor of HMS cell biology, and her colleagues plotted the position of the 89 proteins and observed that the three members of the sirtuin family (SIRT3, SIRT4 and SIRT5) were tightly bound. This approach makes SIRT3 play a key role in regulating the health of mitochondria.

Control of damage is essential for cells and their components. But the researchers demonstrated that SIRT3 intervened in a different way. It responds quickly to mitochondria without compromising yourself. In a paper published by scientists on Cell, a roadmap is provided for future research and shows how they can use it to detect stress responses in mitochondria.

"Knowing how the three mitochondrial sirtuins proteins combine to give us - and this area - really rich information," Haigis said. "The interactive components make us see the stress response. The more we see the more clear that the response is actually regulatory feedback."

Mitochondria must maintain an appropriate concentration gradient on both sides of their inner walls in internal cells, where ATP is the energy source of the cells. When the equilibrium of the membrane potential is destroyed, the pH level rises and the membrane potential sends a signal to destroy the mitochondria. Haigis and her team found that SIRT3 and its binding partner ATP5O changed their markers in the mitochondria by inverting the chemical markers on other proteins, resulting in a response to pH reduction. SIRT3 and ATP50 can label these chemicals - and use energy - to respond to cell pressure until recovery is balanced.

"From a cellular biology point of view, this is a rapid response to stress, which is more effective than mitochondria that are always degraded." Haigis said. Flarebio provides you with good-quality recombinant proteins and antibodies including NES Monoclonal Antibody.

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