1 / 12

PROTEIN SYNTHESIS

This presentation provides an overview of protein synthesis, including the two main processes involved - transcription and translation. Key concepts such as RNA polymerase, double helix, sense and anti-sense strands, codons, anticodons, and ribosomes are covered in detail.

rmontanez
Download Presentation

PROTEIN SYNTHESIS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PROTEIN SYNTHESIS PRESENTATION Adenine Uracil Guanine Cytosine

  2. There are two processes involved: • Transcription-Copying of DNA code to form mRNA. • Translation-Conversion of RNA code into a sequence of amino acids.

  3. Transcription-RNA polymerase binds to double helix at promoter region RNA POLYMERASE DNA DOUBLE HELIX

  4. Sense strand Anti-sense strand Bonds between bases are broken and DNA double helix unwinds

  5. Free nucleotides from inside nucleus bind onto exposed DNA bases forming a molecule of mRNA Sense strand Free Nucleotides Anti-sense strand

  6. mRNA When mRNA has formed, it moves away and the DNA reforms + DNA double helix rewinds

  7. Poly-A Guanine “CAP” • The 5` end of the polynucleotide mRNA is modified by a guanine cap which is thought to be a translation promoter. • About 100 adenines (POLY A) are added to the 3` end which is thought to: • >to be a signal for the exit of mRNA from the nucleus. • >Protect mRNA from enzyme action. 5` end 3` end mRNA

  8. Translation- Diagram of an anti-codon Anti Codon bases tRNA Amino acid

  9. 5` end 3` end Ribosome Anti Codon. 2 codons enter the information processing region of ribosome. An anti-codon attaches to the bottom of ribosome and codes the amino acid with corresponding bases. 2 Codons mRNA

  10. 5` end 3` end Ribosome Peptide bond A second anti-codon comes along and after it has coded its amino acid, a peptide bond is formed between the 2 amino acids mRNA Anti Codon.

  11. 2nd and 3rd codons 5` end 3` end Peptide bond The first anti-codon detaches leaving its amino acid behind. The mRNA moves along ribosome and a third tRNA binds onto the third codon.

  12. The EndBy Sahira, Kulsoom and Sarah.

More Related