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RNA and Protein Synthesis

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RNA and Protein Synthesis RNA RNA Ribonucleic Acid Single stranded nucleotide chain DNA s Thymine is REPLACED by Uracil A & T break up because of the new ... – PowerPoint PPT presentation

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Title: RNA and Protein Synthesis


1
RNA and Protein Synthesis
2
RNA
  • RNA Ribonucleic Acid
  • Single stranded nucleotide chain
  • DNAs Thymine is REPLACED by Uracil
  • A T break up because of the new guy U
  • But C G are still 4-eva

3
RNA
  • 3 types of RNA
  • mRNA messenger
  • Carries DNA code from
  • nucleus ? cytoplasm ? ribosome
  • tRNA transfer
  • Transfers the amino acids to the ribosome for
    protein assembly (our fetching puppy)
  • rRNA ribosomal
  • Produce enzymes to bond amino acids during
    protein synthesis

4
  • mRNA - messenger RNA
  • Used for protein synthesis
  • Codes for amino acid sequence
  • made from DNA
  • travels
  • Nucleus ? Cytoplasm ? Ribosomes
  • DNA GACCATAGC
  • mRNA
  • Codon group of 3 bases
  • GAC or CAT

CUGGUAUCG
5
  • tRNA transfer RNA
  • Brings specific amino acid to the growing amino
    acid chain
  • fetching puppy

mRNA codon UGG
Anticodon ACC
Corresponding Amino Acid
6
The Genetic Code
  • Use mRNA codons with chart!!!!

7
  • DNA sequence TACCATAGC
  • mRNA sequence AUGGUAUCG
  • 1st Codon in seq AUG

Find the 2nd letter in the codon across
Find the 3rd letter in the codon down
Find the first letter in the codon here
8
Codon AUG ?
Methionine (START)
9
Practice using your own chart
  • DNA sequence TCCAATCTA
  • mRNA sequence AGGUUAGAU
  • Codons AGG UUA GAU
  • Amino Acid sequence
  • Argenine Leucine Aspartic Acid

10
  • Argenine Leucine Aspartic Acid
  • Proteins polypeptide amino acid chain

11
Protein Synthesis
  • 1) Transcription stage of protein synthesis
    where instructions for making a protein are
    transferred to an RNA molecule
  • DNA ? mRNA transcription
  • 2) Translation stage of protein synthesis when
    the information in mRNA is used to make proteins
  • mRNA ? amino acid chain
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