protein(structural(metrics(for( modelling(presentation1.pptx author m.shajahan gulam razul created...
Post on 17-Jun-2020
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Protein Structural Metrics for Modelling
• The 20 standard amino acids share a common structure but differ in their side chains. • Pep=de bonds link amino acid residues in a polypep=de.
General Structure of α-Amino Acid
Condensation of Two Amino Acids
Condensation of Two Amino Acids
Pep=de Bond
1°, 2°, 3° & 4° Structure
Peptide Bonds Assume Trans Conformation
Resonance of Peptide Bond
Extended Conformation of Polypeptide
Torsion Angles of Polypeptide Backbone
Steric Interference of Adjacent Peptide Groups
The α Helix
β Sheets
Antiparallel β Sheet
Ramachandran Diagram
Parallel β Sheet
Pleating of β Sheet
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