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Translation. Every living organism is created using the same language – A, T, C, and G. Translation. For spoken languages we have these. The language of DNA – A, T, G, and C. If each letter codes for one thing we are limited to 4 traits.

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Presentation Transcript
Translation
Translation

  • Every living organism is created using the same language – A, T, C, and G.


Translation1
Translation

  • For spoken languages we have these.


The language of dna a t g and c
The language of DNA – A, T, G, and C

  • If each letter codes for one thing we are limited to 4 traits.

  • If a pair of letters codes for one thing we get 4x4 = 16 combinations.

  • If a trio codes for one thing we get 4x4x4 = 64 possibilities.


3 letter code
3 Letter Code

  • mRNA is read in a 3 base code.

  • Each three bases is called a codon.

  • Codon – 3 base sequence of nucleotides on RNA


What do codon s code for
What do codon’s code for?

  • Each 3 base sequence codes for a specific amino acid that has the complimentary base pair attached to tRNA

  • tRNA – transfer RNA

  • Each tRNA molecule has an amino acid attached to it.

  • Anticodon – the three complimentary bases on the tRNA.


Amino acids
Amino Acids

  • Amino Acids are the “building blocks” that are used to create peptide chains.

  • There are 20 amino acids that are coded for by mRNA


From peptide to protein
From peptide to protein

  • Peptides chains are joined to make polypeptides – which are then folded into proteins.



Ribosomes
Ribosomes

  • Ribosomes – the component of cells that makes proteins from the amino acids on tRNA molecules.

  • Ribosomes are made of rRNA and protein


Translation2
Translation

  • Translation is the process of reading the 3 base pair on the mRNA strand and synthesizing protein molecules.


Animation
Animation

  • http://www.youtube.com/watch?v=NJxobgkPEAo


Not to be outdone
Not to be outdone

  • http://www.youtube.com/watch?v=_Q2Ba2cFAew&feature=related


Translation practice
Translation Practice

  • DNA – T A C A A C C G C T T T C T A

  • mRNA – A U G U U G G C G A A A G A U

  • tRNA - U A C A A C C G C U U U C U A

  • Amino - Met - Leu - Ala - Phen - Leu


Reading
Reading

  • Reading: “Translating the Message in mRNA” pgs. 528-530.

  • Continue filling out the graphic organizer.

  • Tomorrow - Proteins


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