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Conserved Binding Sites01:49

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Genome Copying Errors02:46

Genome Copying Errors

DNA replication is a well-evolved process that copies millions of base pairs with high fidelity during each cell division. Occasionally a wrong base or a long stretch of wrong bases may get added to the daughter strands. If the errors are left unchecked, cells might accumulate several mutations that might endanger their  survival. Therefore, the copying errors are checked and repaired at three levels.
Multi-species Conserved Sequences02:51

Multi-species Conserved Sequences

Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
Conserved Binding Sites01:49

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Mismatch Repair01:20

Mismatch Repair

Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
Genetic Material01:20

Genetic Material

Within the human body, a complex and detailed system of trillions of cells works in unison to sustain life. Each cell houses a nucleus, which contains 46 chromosomes divided into 23 pairs. Chromosomes are highly coiled structures made of the genetic material DNA. These chromosomes are essential carriers of genetic information, with half inherited from the mother through her egg and the other half from the father's sperm, combining to create the unique genetic makeup of an individual.

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関連する実験動画

Updated: Jul 14, 2026

Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay (EMSA) and DNA-affinity Precipitation Assay (DAPA)
11:35

Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay (EMSA) and DNA-affinity Precipitation Assay (DAPA)

Published on: August 21, 2016

人間のゲノムに超保存された元素.

Gill Bejerano1, Michael Pheasant, Igor Makunin

  • 1Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA. jill@soe.ucsc.edu

Science (New York, N.Y.)
|May 8, 2004
PubMed
まとめ

研究者らは,ヒトゲノムで481の超保存元素 (UCE) を特定し,哺乳類と脊椎動物の間で高い保存を示した. これらのUCEは,発達に不可欠であり,脊椎動物のオントジェニーに不可欠である可能性があります.

科学分野:

  • ゲノミクスゲノミクスとは
  • 比較ゲノミクスとは
  • 進化生物学の進化生物学について

背景:

  • 超保存元素 (UCE) は,種間の高度に保存されたDNA配列である.
  • UCEを理解することは,ゲノムの進化と機能を解読する上で極めて重要です.

研究 の 目的:

  • 人間のゲノムにおける超保存元素 (UCEs) を特定し,特徴づけること.
  • 異なる脊椎動物種におけるこれらの元素の保全パターンを調査する.
  • UCEのゲノム位置と潜在的な機能を調査する.

主な方法:

  • 人間,ネズミ,マウス,鶏,犬,魚のゲノムを比較したゲノム分析.
  • 完全同一性を持つDNAセグメントの識別 完全同一性のあるDNAセグメントの識別 完全同一性のあるDNAセグメントの識別 完全同一性のあるDNAセグメントの識別 完全同一性のあるDNAセグメントの識別
  • RNAの処理,転写,および発達に関与する遺伝子の相対的なUCE位置の分析.

主要な成果:

  • ヒト,ネズミ,マウスの全ゲノムで100%の同一性を持つ481のセグメント>200の塩基対 (bp) を特定しました.
  • これらのセグメントは,鶏と犬の高い保全 (95-99%の同一性),魚の重要な保全を示しています.

さらに関連する動画

Using Sniper-Cas9 to Minimize Off-target Effects of CRISPR-Cas9 Without the Loss of On-target Activity Via Directed Evolution
11:37

Using Sniper-Cas9 to Minimize Off-target Effects of CRISPR-Cas9 Without the Loss of On-target Activity Via Directed Evolution

Published on: February 26, 2019

Stability and Structure of Bat Major Histocompatibility Complex Class I with Heterologous β2-Microglobulin
11:17

Stability and Structure of Bat Major Histocompatibility Complex Class I with Heterologous β2-Microglobulin

Published on: March 10, 2021

関連する実験動画

Last Updated: Jul 14, 2026

Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay (EMSA) and DNA-affinity Precipitation Assay (DAPA)
11:35

Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay (EMSA) and DNA-affinity Precipitation Assay (DAPA)

Published on: August 21, 2016

Using Sniper-Cas9 to Minimize Off-target Effects of CRISPR-Cas9 Without the Loss of On-target Activity Via Directed Evolution
11:37

Using Sniper-Cas9 to Minimize Off-target Effects of CRISPR-Cas9 Without the Loss of On-target Activity Via Directed Evolution

Published on: February 26, 2019

Stability and Structure of Bat Major Histocompatibility Complex Class I with Heterologous β2-Microglobulin
11:17

Stability and Structure of Bat Major Histocompatibility Complex Class I with Heterologous β2-Microglobulin

Published on: March 10, 2021

  • UCEは,RNA処理,転写調節,および発達に関与する遺伝子の近くに頻繁に位置しています.
  • 結論:

    • UCEは,脊椎動物の高度に保存された遺伝的要素の新しいクラスを表しています.
    • その保全レベルはタンパク質の保全レベルを超えており,重要な機能的役割があることを示唆しています.
    • UCEは,哺乳類や他の脊椎動物の本体形成に不可欠である可能性が高いが,その正確な機能と進化の起源については,さらなる調査が必要である.