<p>Volumes of peptide residues in HLA II DR structures.</p>

For each residue, its volume in A³ and the group to which it belongs are indicated in the “Vol. A³” row and “Group” row (very small (vs), small (s), medium (m), large (l), and very large (vl), correspondingly). The total volume of all residues in the peptide is indicated in the column “Total volume”. The columns “very small”, “small”, “medium”, “large”, “very large” indicate the number of residues in each group. At the bottom of the table, by each peptide position, the distribution of the number of structures with a vs, s, m, l, or vl volume in that position is demonstrated. Below, the “most common pair” in this position (the pair of counts for two adjacent – like “vs” and “s” – volume categories that cover half or more of all samples) is listed. That same pair of numbers is also underlined in the summary Table (‘Counts for the residue types’) showing the number of structures with vs, s, m, l, or vl volume. At the two bottom rows, the total count of cases for that pair and the % of those cases (of all structures) are given for each position. At the side column, the total count of residues in each group (for all positions together) is shown. (XLSX)