Pinterest • The world’s catalog of ideas
from Etsy

Retirement Stop Codon Card | Molecular Biology, Chemistry, RNA, tRNA, UAA, Protein | Professor, Teacher, Scientist, Colleague

from ScienceDaily

A glimpse into nature's looking glass -- to find the genetic code is reassigned: Stop codon varies widely

❤ =^..^= ❤ It has long been assumed that there is only one 'canonical' genetic code, so each word means the same thing to every organism. Now, this par...

Termination occurs when a stop codon enters the A - site of the ribosome. There are three different stop codons: 1) UAA 2) UGA 3) UAG. A stop codon does not have a corresponding tRNA but instead corresponds to a release factor.


Apparently stop codons don't always means "stop"! [Cell Biology]

When Stop Means Go— A survey of trillions of base pairs of microbial DNA reveals a considerable degree of stop codon reassignment.


Differences between the vertebrate mtDNA code and the "universal" code are indicated in red. Note that UGA codes for Trp rather than being a stop codon, there are two Met codons, and two AGR codons are read as Stops. Slightly different mtDNA codes are found in Drosophila and other invertebrate groups.

from Education

How Gene Mutation Occurs:

Point mutations change a single nucleotide base pair-3 types: Silent Mutation: mutation does not change the protein bc multiple genetic codons can encode for the same amino acid. Amino acids are coded for by 3 nucleotide sets called codons. Missense Mutation-alters the nucleotide sequence so that a different amino acid is produced. Nonsense Mutation-A stop codon is coded for in place of an amino acid; signals the end of the translation process and stops protein production-usually…

from yourgenome

How do you identify the genes in a genome?

Here is a beautifully clear illustration of the basic structure of a gene showing the promoter, start codon, introns, exons and stop codon.