Structure of Proteins a carbon atom H N CH 一OH a-amino group R -side chain an d-amino acid peptide bonds 3-NH-CH-C-NH-CH一C∠NH一CH-C-NH-CH一C-NH-CH一( CH3 CH2OH H CH>SH CH(CH3)2 a short section of a protein H2N-CH-C-OH H2N-CH-C OHHN一CH一C OHHN一CH- C- OH H2N-CH- OH CH3 CHOH H CH2SH CH(CH3)2 alanine serine glycine cysteine valine individual amino acids 三> Chapter 24 3Chapter 24 3 Structure of Proteins =>