proteasome

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pro·te·a·some

 (prō′tē-ə-sōm′)
n.
A cellular protein complex consisting of proteolytic enzymes that degrade endogenous proteins, especially those that are damaged, pathogenic, or no longer of use.

[Alteration of earlier prosome (influenced by protease) : pro(grammed), from the earlier belief that proteasomes played a role in regulating messenger RNA translation + -some.]
References in periodicals archive ?
Proteasomes play an important role in cell function and growth by breaking down proteins that are damaged or no longer needed.
For genome uncoating we will characterize the spatial and temporal interactions between ubiquitinated viral proteins, proteasomes, the viral uncoating factor, and the viral genome that occur on cytoplasmic cores.
In fact, comparing these assays with that obtained using purified proteasomes, the tested activities were all significantly reduced.
It is suggested that AGE accumulation may arise from ineffective removal of oxidatively modified proteins by the cellular proteolytic systems, such as the proteasomes [26].
Other topics include the programming of DNA methylation patterns, ubiquitin and proteasomes in transcription, toward the single-hour high-quality genome, the regulation of glucose transporter translocation in health and diabetes, the structural basis for the control of eukaryotic protein kinases, and pluripotency and nuclear reprogramming.
Abhimany Garg, Chief of Nutrition and Metabolic Diseases and senior author of the study, said that in addition to providing a clue to the cause of JMP syndrome, the findings also tell researchers more about the role proteasomes play in the immune response.
Hernebring can show that the damaged proteins in the cells are probably broken down by molecular machines called proteasomes.
Malin Hernebring found damaged proteins in the cells are probably broken down by molecular machines called proteasomes.
Additional research is needed to characterize more fully the role of proteasomes in acute human responses to air pollution.
Proteasomes are responsible for the degradation of cellular proteins in eukaryotic cells, and they play an important role in cell cycle progression, apoptosis, angiogenesis and drug resistance.
This protein, which helps regulate the activity of certain genes in a cell's DNA, normally is degraded by ' the proteasomes.
They can achieve this through two complementary mechanisms: proteasomes and autophagy.
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