9-8 - PROTEINS: Contain C,O,H,N and usually some sulfur...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
PROTEINS: Contain C,O,H,N and usually some sulfur also. A. Polymers of amino acids (monomers) (~ 20 different kinds) Unbranched chains B. All amino acids have the same basic structure Contain central carbon to which is attached: An amino acid Carboxyl group Hydrogen Something else (R) C. Amino Acids are bonded together through condensation reactions, "peptide bond”. Amino acid polymers - joined to form unbranched chains - bond joining amino acids is a peptide bond D. Structurally complex: (unlike carbohydrates and lipids) * primary structure (1o): a description of the covalent bonds (strong bonds) and the sequence of amino acids in a protein * secondary structure (2o): repeated special pattern; alpha helix; beta pleated sheet; stabilizaed by hydrogen bonds- holds shapes * tertiary structure (3o): 3-d pattern of folding; stabilized by weak bonds (H, hydrophobic interactions) *quaternary structure (4o): 3-d pattern of joining several different polypeptide chains. – stabilized by weak bonds (h, hydrophobic interactions)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/07/2010 for the course BIOL 1201 taught by Professor Wishtichusen during the Fall '07 term at LSU.

Page1 / 2

9-8 - PROTEINS: Contain C,O,H,N and usually some sulfur...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online