Lectures 3 and 4

Lectures 3 and 4 - PROTEINS AMINO ACID STRUCTURE AND...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
PROTEINS
Background image of page 1

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

View Full DocumentRight Arrow Icon
AMINO ACID STRUCTURE AND PROPERTIES Amino acids are the building blocks of proteins α -amino acids are chiral with two possible stereoisomers-only L-amino acids are constituents of proteins Twenty kinds of side-chains varying in size, shape, charge, hydrogen- bonding capacity, hydrophobic character and chemical reactivity
Background image of page 2
AMINO ACID STRUCTURE AND PROPERTIES Simplest amino acid is Glycine, which is achiral Alanine has a methyl group as its side-chain
Background image of page 3

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

View Full DocumentRight Arrow Icon
AMINO ACID STRUCTURE AND PROPERTIES 1. Amino acids with Nonpolar Aliphatic side chains Large aliphatic side chains are hydrophobic, cluster together in interior of protein due to hydrophobic effect Side chain of Proline is bonded to both nitrogen and α -carbon atoms, results in conformationally restricted ring structure, causing “kinks” in polypeptide chain
Background image of page 4
AMINO ACID STRUCTURE AND PROPERTIES 2. Amino acids with Nonpolar Aromatic side chains Contain large aromatic rings of which Phe is purely hydrophobic, whereas Tyr and Trp are
Background image of page 5

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

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 15

Lectures 3 and 4 - PROTEINS AMINO ACID STRUCTURE AND...

This preview shows document pages 1 - 6. Sign up to view the full document.

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