• Save
Transcription notes
Upcoming SlideShare
Loading in...5
×
 

Transcription notes

on

  • 1,436 views

 

Statistics

Views

Total Views
1,436
Views on SlideShare
1,433
Embed Views
3

Actions

Likes
0
Downloads
0
Comments
0

1 Embed 3

http://mrruska.pbworks.com 3

Accessibility

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Transcription notes Transcription notes Presentation Transcript

  • Protein Synthesis
    Making protien
  • Protein
    Protein is made from small building blocks called amino acids. These amino acids are chemicals that interact in four different types of bonding causing proteins to fold.
  • Proteins
    • Proteins are the parts of cells that can display our traits like skin and hair color. These two examples are traits controlled by the amount of a protein called melanin.
    • Blood carries oxygen in functional protein sub-units called hemoglobin
  • DNA and mRNA
    Made up of Nucleotides:
    Phosphate, Sugar and Base
    Contains many genes
    Present in all animals
    Made up of Nucleotides:
    Phosphate, Sugar and Base
    Acts as a “messenger” between DNA and outside the nucleus to create the functional unit of the cell; Protein.
  • DNA vs. RNA
    • Double helix (double stranded)
    • Deoxyribose Sugar in the backbone
    • Must remain in the nucleus
    • Base Pairs:
    Thymine
    Guanine
    Cytosine
    Adenine
    • Single Stranded
    • Ribose Sugar in the back bone
    • Can travel in and out of the nucleus
    • Base Pairs:
    Uracil
    Guanine
    Cytosine
    Adenine
  • Other important players…
    • tRNA (aka transfer RNA)- Only 3 nucleotides long, Has an attachment site for a particular amino acid
    • Ribosome- a special protein that makes other proteins by attaching to mRNA and recruiting tRNA molecules.
    • Amino Acids- chemicals that link together to make protein, about 20 in your body called “essential amino acids”.
  • <iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/983lhh20rGY" frameborder="0" allowfullscreen></iframe>
  • Step 1: Transcription
    DNA is unzipped at a certain gene
    mRNA is built one nucleotide at a time using the DNA as a template
    mRNA is released back into the nucleus
    DNA zips back up
  • Step 2: Translation
    mRNA leaves the nucleus
    A ribosome attaches to the mRNA at the first codon
    The ribosome “reads” the mRNA’s sequence of bases and sends out a signal for tRNA with the opposite matching codon (aka ANTI-CODON) carrying a specific amino acid
    tRNA leaves the Amino acid attached to the ribosome and goes to search for another amino acid
    The ribosome moves to the next codon and repeats the process
  • Step 2: Translation (continued)
    6. The ribosome continues building until the end of the mRNA
    7. The ribosome then releases the amino acid chain back into the cell where it folds- It is now a protein!
    8. The ribosome then releases the mRNA back into the cell
    9. mRNA returns to the nucleus where it breaks down into nucleotides and re-starts the process