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Related Concept Videos

Intrinsically Disordered Proteins02:18

Intrinsically Disordered Proteins

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Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
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Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...
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Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
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Proteins are broken down into amino acids during digestion. Unlike fats and carbohydrates, which are stored for later use, proteins are not. Instead, amino acids are either used to produce ATP through oxidation or contribute to the creation of new proteins for the growth and repair of the body. Any surplus amino acids from the diet are converted into glucose or triglycerides rather than excreted.
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Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick.  Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
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Towards Understanding Protein Disorder In-Cell.

Cesyen Cedeño1, Hadas Raveh-Hamit2, András Dinnyés3

  • 1VIB Department of Structural Biology, Vrije Universiteit Brussel, 1050, Brussels, Belgium.

Advances in Experimental Medicine and Biology
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Nuclear magnetic resonance (NMR) allows atomic-level study of cellular components in vitro. Advances enable detailed investigation of molecular mechanisms crucial for understanding health and disease.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Structural Biology

Background:

  • Understanding cellular biochemical machinery at atomic resolution is vital for health and disease research.
  • Molecular mechanisms are typically studied using in vitro methods.

Purpose of the Study:

  • To outline current applications of Nuclear Magnetic Resonance (NMR) spectroscopy in cellular studies.
  • To propose future directions for NMR in investigating cellular components.

Main Methods:

  • Utilizing Nuclear Magnetic Resonance (NMR) spectroscopy for in-cell analysis.
  • Leveraging advancements in spectrometer sensitivity and pulse sequence design.

Main Results:

  • NMR enables the study of proteins and other cellular constituents within intact cells.
  • Current applications demonstrate the technique's utility in biological research.

Conclusions:

  • NMR is a powerful tool for elucidating molecular mechanisms in their native cellular environment.
  • Continued technological development promises expanded future applications for NMR in cell biology.