Synthesis of proteins
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Synthesis of proteins. Objectives. What are proteins?. Types of amino acids. The amino acids. Structure of proteins. Secondary structure. Bonds. Tertiary structure. Quaternary structure. Proteins plenary. The structure of DNA. This is the key!. DNA. DNA contd. Protein Synthesis.

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Synthesis of proteins

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Synthesis of proteins


Objectives


What are proteins?


Types of amino acids


The amino acids


Structure of proteins


Secondary structure


Bonds


Tertiary structure


Quaternary structure


Proteins plenary


The structure of DNA

  • This is the key!


DNA


DNA contd.


Protein Synthesis

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

The base pairs:

Adenine to Thymine (uracil in RNA)

Guanine to cytosine


Transcription and translation

  • Transcription: The code in the DNA is converted to a messenger RNA (mRNA) strand.

  • Takes place in the nucleus.

  • Translation: the process by which the message on the mRNA is converted to a protein: Takes place in the cytoplasm and uses ribosomes and transfer RNA (tRNA).


Transcription


Transcription contd.


Transcription diagram


Translation


Translation continued


tRNA


Role of tRNA


Write the anticodons which pair with these codons


Genetic code


Each amino acid is coded for by bases


How are amino acids and tRNA joined


Protein synthesis at the ribosome


Translation diagram


Forming the chain

  • http://www.youtube.com/watch?v=5bLEDd-PSTQ


The three steps of translation


Plenary


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