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関連する概念動画

Nuclear Protein Sorting01:34

Nuclear Protein Sorting

Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...
Nuclear Localization Signals and Import01:46

Nuclear Localization Signals and Import

Proteins targeted to the nucleus carry short stretches of amino acid sequences called the nuclear localization signal or NLS. Classical nuclear localization signals are of two types: monopartite and bipartite NLS. Monopartite classical NLS (cNLS) consists of a single cluster of 4-8 amino acids. Bipartite cNLS consists of two clusters of  2-3 amino acids and a 9-12 residue long proline-rich linker bridging the two clusters. Signal clusters are rich in positively charged amino acids such as...
Nuclear Export01:42

Nuclear Export

The nucleus restricts several proteins within and allows others to pass. The restricted proteins possess a nuclear retention sequence or NRS, anchoring them to the nuclear lamins and preventing their transport to the cytosol. The non-restricted proteins, after their synthesis, are transported to their site of action, such as the cytosol or other organelles, with the help of nuclear export signals or NES.
NES are of three types- the canonical 10-residue long leucine-rich signal and other...
Regulation of Nuclear Protein Sorting01:45

Regulation of Nuclear Protein Sorting

Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein.
Western Blotting01:15

Western Blotting

Western blotting is an analytical technique for protein identification. It has various applications in immunology and medicine, including detecting diseases like bovine spongiform encephalopathy, mad cow disease, and human and feline immunodeficiency virus from biological samples.
The technique begins with separating proteins from the sample using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), followed by protein transfer, immunoblotting, and finally, protein detection.

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関連する実験動画

Updated: Jul 9, 2026

Detection of Post-translational Modifications on Native Intact Nucleosomes by ELISA
07:13

Detection of Post-translational Modifications on Native Intact Nucleosomes by ELISA

Published on: April 26, 2011

ロックされた核酸分子ビーコン ロックされた核酸分子ビーコン

Lin Wang1, Chaoyong James Yang, Colin D Medley

  • 1Center for Research at Bio/nano Interface, Department of Chemistry, UF Genetics Institute, Gainesville, Florida 32611-7200, USA.

Journal of the American Chemical Society
|November 10, 2005
PubMed
まとめ

新しいロックされた核酸分子ビーコン (LNA-MB) は,安定性を向上させ,正確なDNA検出を提供します. この高度な分子探査機は,繊細な in vivo ハイブリダイゼーション研究に最適です.

科学分野:

  • バイオケミストリー バイオケミストリー
  • 分子生物学は分子生物学である.
  • 核酸化学 核酸化学について

背景:

  • 分子ビーコン (MBs) は,核酸検出に不可欠です.
  • 既存のMBは,安定性と特異性の限界に直面しています.
  • 性能の向上のために,核酸アナログの進歩が必要である.

研究 の 目的:

  • 小説『ロックされた核酸-分子ビーコン (LNA-MB) 』のデザインと特徴付け.
  • LNA-MBの熱安定性とヌクレアース抵抗性を評価するために.
  • 単一塩基不一致差別とタンパク質結合特性を評価する.

主な方法:

  • LNA-MBプローブの設計と合成.
  • 熱安定性に対する融解温度 (Tm) 分析.
  • 安定性を決定する核酸消化アッセイ.
  • 完璧なマッチと不一致のシーケンスを持つハイブリッド化研究.
  • 単一鎖DNA結合タンパク質による結合分析.

主要な成果:

  • LNA-MBは,非常に高い融解温度と優れた熱安定性を実証しました.

さらに関連する動画

DNA Tension Probes to Map the Transient Piconewton Receptor Forces by Immune Cells
06:53

DNA Tension Probes to Map the Transient Piconewton Receptor Forces by Immune Cells

Published on: March 20, 2021

Quantitative Detection of DNA-Protein Crosslinks and Their Post-Translational Modifications
10:12

Quantitative Detection of DNA-Protein Crosslinks and Their Post-Translational Modifications

Published on: April 21, 2023

関連する実験動画

Last Updated: Jul 9, 2026

Detection of Post-translational Modifications on Native Intact Nucleosomes by ELISA
07:13

Detection of Post-translational Modifications on Native Intact Nucleosomes by ELISA

Published on: April 26, 2011

DNA Tension Probes to Map the Transient Piconewton Receptor Forces by Immune Cells
06:53

DNA Tension Probes to Map the Transient Piconewton Receptor Forces by Immune Cells

Published on: March 20, 2021

Quantitative Detection of DNA-Protein Crosslinks and Their Post-Translational Modifications
10:12

Quantitative Detection of DNA-Protein Crosslinks and Their Post-Translational Modifications

Published on: April 21, 2023

  • 例外的な単一ベース不一致差別の能力が観察されました.
  • LNA-MBは,ニュクレアスの消化に対する有意な安定性を示した.
  • 単一鎖DNA結合タンパク質との結合は検出されなかった.

    • 結論:

    • 新型LNA-MBは,安定性と特異性を高めています.
    • その特性により,要求の高い生物学的用途に適しています.
    • LNA-MBsは,in vivoハイブリッド化研究と診断に大きな希望を持っています.