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Title:

Protein Synthesis

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Protein Synthesis Two types of nucleic acids RNA Usually single-stranded Has uracil as a base Ribose as the sugar Carries protein-encoding information DNA Usually ... – PowerPoint PPT presentation

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Title: Protein Synthesis


1
Protein Synthesis
2
Two types of nucleic acids
  • RNA
  • Usually single-stranded
  • Has uracil as a base
  • Ribose as the sugar
  • Carries protein-encoding information
  • DNA
  • Usually double-stranded
  • Has thymine as a base
  • Deoxyribose as the sugar
  • Carries RNA-encoding information

3
Transcription
  • RNA polymerase reads the nucleotides on the
    template strand from 3 to 5 and creates an RNA
    molecule that looks like the coding strand.

DNA
DNA coding strand
5
G
T
C
A
T
T
C
G
G
3
3
C
A
G
T
A
A
G
C
C
5
DNA template strand
4
Transcription
  • RNA polymerase reads the nucleotides on the
    template strand from 3 to 5 and creates an RNA
    molecule that looks like the coding strand.

DNA
DNA coding strand
5
G
T
C
A
T
T
C
G
G
3
3
C
A
G
T
A
A
G
C
C
5
DNA template strand
5
Transcription
  • The new RNA molecule is formed by incorporating
    nucleotides that are complementary to the
    template strand.

DNA
DNA coding strand
5
G
T
C
A
T
T
C
G
G
3
3
C
A
G
T
A
A
G
C
C
5
DNA template strand
6
Types of RNA
  • Abbrev.
    Function
  • mRNA Messenger RNA - encodes protein
  • rRNA Ribosomal RNA - part of ribosome

  • - used to translate mRNA into protein
  • tRNA Transfer RNA - couples the
    region which binds the mRNA codon
    and its amino acid

7
Translation
  • The process of reading the RNA sequence of an
    mRNA and creating the amino acid sequence of a
    protein is called translation.

8
(No Transcript)
9
(No Transcript)
10
  • http//www.lewport.wnyric.org/jwanamaker/animation
    s/Protein20Synthesis20-20long.html
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