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相关概念视频

Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

2.9K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
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Protein Families02:47

Protein Families

16.6K
Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism.   Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members.   If these new proteins contain similar amino acids in key...
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相关实验视频

Updated: Jan 10, 2026

Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins
11:34

Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins

Published on: August 9, 2019

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来自随机序列库的功能性蛋白质.

A D Keefe1, J W Szostak

  • 1Howard Hughes Medical Institute, Department of Molecular Biology, Massachusetts General Hospital, Boston 02114, USA.

Nature
|April 5, 2001
PubMed
概括
此摘要是机器生成的。

研究人员利用mRNA显示器从随机序列中探索功能性蛋白质的起源. 他们发现了四种新的ATP结合蛋白,这表明功能性蛋白经常在随机序列中出现.

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A Protocol for Functional Assessment of Whole-Protein Saturation Mutagenesis Libraries Utilizing High-Throughput Sequencing
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Primer-Free Aptamer Selection Using A Random DNA Library
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Primer-Free Aptamer Selection Using A Random DNA Library

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相关实验视频

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Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins
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A Protocol for Functional Assessment of Whole-Protein Saturation Mutagenesis Libraries Utilizing High-Throughput Sequencing
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Primer-Free Aptamer Selection Using A Random DNA Library
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科学领域:

  • 生物化学 生物化学
  • 分子生物学分子生物学
  • 蛋白质工程是指蛋白质工程.

背景情况:

  • 功能性蛋白质来自随机序列的起源是了解早期生命的一个关键问题.
  • 以前的研究还没有确定大型随机序列库中功能蛋白的频率.

研究的目的:

  • 为了研究功能性蛋白质在大量随机序列图书馆中的发生率.
  • 通过体外选择识别新的ATP结合蛋白.

主要方法:

  • 利用信使RNA (mRNA) 显示技术进行体外选择.
  • 选了一个6 x 10^12随机的80氨基酸蛋白质库,以检测ATP结合能力.

主要成果:

  • 确定了四种不同的新型ATP结合蛋白.
  • 这些蛋白质与彼此无关,也与已知的蛋白质数据库无关.
  • 随机蛋白库中的功能蛋白的频率与RNA库中的频率相当.

结论:

  • 功能性蛋白质可以很容易地从随机的氨基酸序列中出现.
  • mRNA显示是发现新型蛋白质功能的有效方法.
  • 这项研究提供了对新型蛋白质进化的潜力的洞察.