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| Description: Step 1, transcription: A primary transcript (premRNA) containing complementary copies of the exons and introns is produced from the gene. Step 2, splicing: The intron sequences are removed and the exons spliced together to yield the final mRNA. Step 3, translation: The coding regions of the spliced mRNA produce a chain, which adopts its favored three-dimensional structure and incorporates a heme group. Note that the entire heme-binding region (red) is coded for by one exon (the central exon). Picture Stats: Views: 603 Filesize: 116.79kB Height: 521 Width: 687 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=34132 |