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For example, if there were two bases per codon, then only 16 amino acids could be coded for (4²=16). Because at least 21 codes are required (20 amino acids plus stop) and the next largest number of bases is three, then 4³ gives 64 possible codons, meaning that some degeneracy must exist.
In the standard code, the sequence AUG—read as methionine—can serve as a start codon and, along with sequences such as an initiation factor, initiates translation. [ 3 ] [ 9 ] [ 10 ] In rare instances, start codons in the standard code may also include GUG or UUG; these codons normally represent valine and leucine , respectively, but as ...
Cancer.gov – overview, includes link to Excel spreadsheet with codes at National Cancer Institute; Overview at National Cancer Institute; Word document – malignancies only at National Cancer Institute; Overview at University hospital Gießen und Marburg; Download table German version Archived 2007-09-26 at the Wayback Machine at DIMDI ...
For example, "AA" is assigned to blue, "AC" is assigned to green, and so on for all 16 unique pairs. During sequencing, each base in the template is sequenced twice, and the resulting data are decoded according to this scheme.
Examples of degeneracy are found in the genetic code, when many different nucleotide sequences encode the same polypeptide; in protein folding, when different polypeptides fold to be structurally and functionally equivalent; in protein functions, when overlapping binding functions and similar catalytic specificities are observed; in metabolism, when multiple, parallel biosynthetic and ...
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This is a list of disorder codes in the Online Mendelian Inheritance in Man (OMIM) database. These are diseases that can be inherited via a Mendelian genetic mechanism. OMIM is one of the databases housed in the U.S. National Center for Biotechnology Information.