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The euplotid nuclear code; The bacterial, archaeal and plant plastid code; The alternative yeast nuclear code; The ascidian mitochondrial code; The alternative flatworm mitochondrial code; The Blepharisma nuclear code [4] The chlorophycean mitochondrial code (none) (none) (none) (none) The trematode mitochondrial code; The Scenedesmus obliquus ...
[20] [21] For example, in 1981, it was discovered that the use of codons AUA, UGA, AGA and AGG by the coding system in mammalian mitochondria differed from the universal code. [20] Stop codons can also be affected: in ciliated protozoa, the universal stop codons UAA and UAG code for glutamine. [21] [note 4] Four novel alternative genetic codes ...
Human protein-coding gene pages: •Python code for maintaining the list •List of human protein-coding genes page 1 covers genes A1BG–EPGN •List of human protein-coding genes page 2 covers genes EPHA1–MTMR3
In particular, the genetic code clusters certain amino acid assignments. Amino acids that share the same biosynthetic pathway tend to have the same first base in their codons. This could be an evolutionary relic of an early, simpler genetic code with fewer amino acids that later evolved to code a larger set of amino acids. [84]
For example, rice can be given genes from a maize and a soil bacteria so the rice produces beta-carotene, which the body converts to vitamin A. [19] This can help children with Vitamin A deficiency. Another gene being put into some crops comes from the bacterium Bacillus thuringiensis ; the gene makes a protein that is an insecticide .
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For example, a particular protein called "example" (symbol "EXAMP") may have 2 chains (subunits), which are encoded by 2 genes named "example alpha chain" and "example beta chain" (symbols EXAMPA and EXAMPB). Some genes encode multiple proteins, because post-translational modification (PTM) and alternative splicing provide several paths for ...