18.9.24

Amino Acids

Lipids PowerPoint ans

Flashcards Amino acid rules

There aer 20 different animo acids used to build polypeptides

Found in all organisms

Coded for by universal sequences (codons) in DNA

Proteins

Proteins are made from long chains of amino acids (monomers)

They are made from C,H,O and NH2

All living things have 20 animo acids the only difference is the R

group

Polypeptides are made from more than 2 animo acids

Proteins primary structure= the sequence of amino acids

Glycine

Cytein

Proteins secondary structure= formation of alpha helix or beta pleated sheet

(hyrdogen bonds- between N-H and C=O groups on amino acids)

Slide 9-19 protein

Dipeptide

Condensation reaction