Hydrophilic features include additional carboxyl groups or amino groups not involved in peptide bonding which are ionised in solution.Hydrophobic features include long non-polar (uncharged) chains or complex aromatic rings.The type of side chain is very important as it affects the solubility of the amino acid.Isoleucine ile Neutral Non-polar Methionine met Neutral Non-polar Non Polar Amino Acids Glutamine gln Neutral Polar Tyrosine tyr Neutral Polar Neutral Polar Amino Acids Lysine lys Basic Polar Arginine arg Basic Polar Basic Amino Acids Amino acids are grouped according to whether their side chains are:- ĪsparticAcid asp Acidic Polar GlutamicAcid glu Acidic Polar Acidic Amino Acids.Attached to this repetitive chain are the different amino acid side chains (R-groups) which are not involved in the peptide bond but which give each amino acid its unique property. The repeating sequence of atoms along a proteins is referred to as the polypeptide backbone. This is because the carboxylic group donates hydrogen ions to the solution (acidic) whereas the amino group (NH2) attracts hydrogen ions from the solution. At neutral pH’s amino acids exist in an ionised form and have both acidic and basic properties.Proteins are only made up of amino acids which are L-isomers. Amino acids, like carbohydrates, show isomerism.Proteins are referred to as heteropolymers due the variety of amino acids involved in their structure.There are twenty different kinds of amino acids used in proteins.Amino acids are the structural building blocks (monomers) of proteins.Molecular Biology Structure of Amino Acids
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |