Xenobiology | Wikipedia audio article
Channel: wikipedia tts
Date: 28/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Xenobiology


00:01:05 1 Difference between xeno-, exo-, and astro-biology
00:01:58 2 Aims of xenobiology
00:05:06 3 Scientific approach
00:06:05 3.1 Xeno nucleic acids (XNA)
00:09:18 3.2 Expanding the genetic alphabet
00:12:07 3.3 Novel polymerases
00:13:11 3.4 Genetic code engineering
00:16:14 3.5 Directed evolution
00:17:17 4 Biosafety
00:19:46 5 Governance and regulatory issues



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SUMMARY
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Xenobiology (XB) is a subfield of synthetic biology, the study of synthesizing and manipulating biological devices and systems. Xenobiology derives from the Greek word xenos, which means "stranger, guest". Xenobiology describes a form of biology that is not (yet) familiar to science and is not found in nature . In practice it describes novel biological systems and biochemistries that differ from the canonical DNA-RNA-20 amino acid system (see central dogma of molecular biology). For example, instead of DNA or RNA, XB explores nucleic acid analogues, termed Xeno Nucleic Acid (XNA) as information carriers. It also focuses on an expanded genetic code and the incorporation of non-proteinogenic amino acids into proteins.