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1 School Chemistry — Grades 1 to 121–12 年级在线 2 University Chemistry — Year 1本科一年级在线 3 University Chemistry — Year 2本科二年级在线 4 University Chemistry — Year 3本科三年级在线

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1 Markets I: The Ecosystem and Exchange-Traded Markets市场在线 2 Markets II: Rates, FX and Credit市场在线 3 Markets III: Commodities, Energy and Crypto市场在线 4 Quantitative Methods方法在线 5 Derivatives and Volatility衍生品在线 6 Rates, Credit, XVA and Risk利率、信用与风险在线 7 Research Craft: Predictors, Backtests, Measurement, Portfolios研究在线 8 Strategies I: Equities and Futures策略在线 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desks策略在线 10 Microstructure and Execution交易执行在线 11 Market Making and High-Frequency Trading做市在线 12 Machine Learning for Markets机器学习在线 13 Low-Latency Software技术在线 14 Networks, Hardware and Trading Infrastructure技术在线 15 Research, Data and Risk Platforms技术在线 16 The Desk and the Firm公司运营在线 17 The Industry: Firms, Roles and Careers职业发展在线 18 Interviews I: Maths, Probability and Speed职业发展在线 19 Interviews II: Markets, Trading Games and the Final Round职业发展在线 20 Interviews III: Code职业发展在线

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Biology · 术语表

什么是 Messenger RNA and transcription？

又称： RNA · transcription · messenger RNA

Definition 14.3 High School Biology · 第 14 章 — From Gene to Protein

RNA (ribonucleic acid) is a single-stranded chain of nucleotides like those of DNA, except that its sugar is ribose and the base uracil (U) replaces thymine (T). Transcription is the copying of a gene’s sequence into a molecule of messenger RNA (mRNA): the enzyme RNA polymerase opens the double helix along the gene, reads one strand (the template strand) and assembles the complementary RNA, U facing A, A facing T, G facing C and C facing G. The mRNA has the sequence of the gene’s other strand, with U for T; it leaves the nucleus for the cytoplasm.

Transcription. RNA polymerase opens the helix, reads the template strand and builds a messenger RNA complementary to it (U in place of T). Behind the enzyme the helix closes again; the RNA peels off.

示例

Example 14.4 (A transcript)

Template strand 3’-TAC GGA CTT ATC-5’ gives the mRNA 5’-AUG CCU GAA UAG-3’. The gene’s other strand reads 5’-ATG CCT GAA TAG-3’: the mRNA is that strand’s sequence with U for T, which is why gene sequences are conventionally written as that strand, the coding strand.

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