RNA and Protein Synthesis

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RNA and Protein Synthesis
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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

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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

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

mRNA codon UGG
Anticodon ACC
Corresponding Amino Acid
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The Genetic Code

• Use mRNA codons with chart!!!!

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• 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
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Codon AUG ?
Methionine (START)
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Practice using your own chart

• DNA sequence TCCAATCTA
• mRNA sequence AGGUUAGAU
• Codons AGG UUA GAU
• Amino Acid sequence
• Argenine Leucine Aspartic Acid

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• Argenine Leucine Aspartic Acid
• Proteins polypeptide amino acid chain

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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