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相关概念视频

Design Example: Strain Gauge Bridge or Wheatstone Bridge01:15

Design Example: Strain Gauge Bridge or Wheatstone Bridge

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The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
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Wheatstone Bridge01:29

Wheatstone Bridge

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An ohmmeter is a resistance-measuring device. It works by applying a voltage to a resistor of unknown resistance and measuring the current across the resistor. The resistance value is deduced using Ohm's law. Usually, the standard configuration of an ohmmeter comprises a voltmeter or an ammeter. However, such configurations are limited in accuracy because the meters alter the voltage applied to the resistor and the current that flows through it.
Thus, for accurate resistance measurements, a...
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Bridge rectifier01:24

Bridge rectifier

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The bridge rectifier is essential in electronics for efficiently converting alternating current (AC) to direct current (DC). Comprised of four diodes configured in a bridge layout, this rectifier effectively processes both the positive and negative halves of the AC waveform, making it superior to half-wave and full-wave center-tapped rectifiers in terms of voltage regulation and output stability.
Operationally, the bridge rectifier allows current flow through two of its diodes during each...
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Cross-bridge Cycle01:26

Cross-bridge Cycle

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As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.
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Lagging Strand Synthesis01:59

Lagging Strand Synthesis

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During replication, the complementary strands in double-stranded DNA are synthesized at different rates. Replication first begins on the leading strand. Replication starts later, occurs more slowly, and proceeds discontinuously on the lagging strand.
There are several major differences between synthesis of the leading strand and synthesis of the lagging strand. 1) Leading strand synthesis happens in the direction of replication fork opening, whereas lagging strand synthesis happens in the...
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DNA Replication02:40

DNA Replication

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DNA replication involves the separation of the two strands of the double helix, with each strand serving as a template from which the new complementary strand is copied.  After replication, each double-stranded DNA includes one parental or “old” strand and one “new” strand. This is known as semiconservative replication. The resulting DNA molecules have the same sequence and are divided equally into the two daughter cells.
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相关实验视频

Updated: Feb 2, 2026

High-Density DNA and RNA microarrays - Photolithographic Synthesis, Hybridization and Preparation of Large Nucleic Acid Libraries
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在DNA上二甲基胺库合成的桥梁策略.

Yagong Wang1, Huanqing Zhang1, Fanming Zeng1

  • 1Pharmaron (Ningbo) Technology Development Co., Ltd., Ningbo, China.

Chemistry, an Asian journal
|February 1, 2026
PubMed
概括

研究人员开发了一种新的DNA编码库方法来合成dithiocarbamates (DTCs),这是药物发现的关键结构. 这一突破使得有效的DTC图书馆建设能够识别新疗法.

关键词:
一个桥梁的桥梁.组合的组合法是指组合的.一个DNA编码的图书馆.二甲基酸盐是一种二甲基酸盐.药物发现 药物发现在-DNA合成.

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A Universal Protocol for Large-scale gRNA Library Production from any DNA Source
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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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High-Density DNA and RNA microarrays - Photolithographic Synthesis, Hybridization and Preparation of Large Nucleic Acid Libraries
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科学领域:

  • 药用化学 医学化学
  • 化学生物学 化学生物学
  • 合成有机化学 合成有机化学

背景情况:

  • 狄氏碳酸盐 (DTC) 是药物化学中的重要支架,经常在治疗剂中发现.
  • 目前的DNA编码库 (DEL) 技术在合成DTC方面面临挑战,原因是缺乏可靠的DNA方法.

研究的目的:

  • 建立一个对DNA上二甲基酸盐形成的一般和有效程序.
  • 为了使DELs的构建能够结合DTC,以加速药物发现.

主要方法:

  • 开发一种新的二硫化碳 (CS) 桥梁策略,用于DNA上DTC合成.
  • 在温和的,与DNA相容的条件下,各种亚利法二次胺和基化物的合.

主要成果:

  • 实现了高转化率和优异的DNA兼容性,用于DNA上的DTC形成.
  • 成功构建了一个原型的DNA编码库,其中包含了新合成的DTC.
  • 证明了该方法能够有效地连接各种氨基和基化物.

结论:

  • 开发的CS2桥接策略克服了DNA上DTC合成的局限性.
  • 这种方法显著扩大了DELs可访问的化学空间.
  • 有助于快速发现基于dithiocarbamate的新疗法.