Table II.
Peptide Coordination in B*2705:pCAC
| Peptide position | Peptide residue | Contact residue | Distance in [Å] | Interaction |
|---|---|---|---|---|
| p1 | pSer1N | Tyr7OH | 2.9 | HB |
| pSer1N | Tyr171OH | 2.7 | HB | |
| pSer1OG | Arg62NH1 | 3.1 | HB | |
| pSer1OG | Glu163(A)OE2 | 2.9 | HB | |
| pSer1OG | *Arg145NH2 | 2.8 | HB | |
| pSer1O | Tyr159OH | 2.6 | HB | |
| pSer1 | Trp167 | ∼3.4 | vdW | |
| p2 | pArg2NE | Glu45OE1 | 2.8 | SB |
| pArg2NH1 | Thr24OG1 | 2.9 | HB | |
| pArg2NH2 | Thr24OG1 | 3.1 | HB | |
| pArg2NH2 | Glu45OE1 | 2.9 | SB | |
| pArg2O | Glu163(A)OE2 | 3.3 | HB | |
| pArg2O | Arg62NH1 | 2.9 | HB | |
| pArg2NE | Glu45OE1 | 2.9 | SB | |
| pArg2NH2 | Glu45OE1 | 2.9 | SB | |
| pArg2N | Glu63(A)OE1 | 3.1 | HB | |
| pArg2N | Glu63(B)OE2 | 2.9 | HB | |
| pArg2N | Glu63(B)OE1 | 3.3 | HB | |
| p3 | pArg3N | Tyr99OH | 3.0 | HB |
| pArg3NE | pArg5O | 2.7 | HB | |
| pArg3NH2 | pArg5O | 2.8 | HB | |
| pArg3 | Tyr99, Leu156, Tyr159 | 3.6-4.0 | vdW | |
| p4 | pTrp4NE1 | *pGlu253OE2 | 2.8 | HB |
| pTrp4O | pArg6NH2 | 2.8 | HB | |
| pTrp4 | Arg62, Gln65, Ile66 | 3.6-4.0 | vdW | |
| p5 | pArg5NE | Gln155OE1 | 3.1 | HB |
| pArg5NH1 | Gln155OE1 | 3.0 | HB | |
| pArg5O | pArg3NH2 | 2.8 | HB | |
| pArg5O | pArg3NE | 2.7 | HB | |
| p6 | pArg6(B)NH2 | pArg3O | 2.8 | HB |
| pArg6(B)NH1 | Ile66O | 3.3 | HB | |
| p7 | pTrp7 | His114, Trp147, Val152, Gln155, Leu156 | ∼3.5 | vdW |
| p8 | pAsn8ND2 | Glu76OE1 | 2.9 | HB |
| pAsn8ND2 | Asp77OD1 | 3.0 | HB | |
| pAsn8O | Trp147NE1 | 2.9 | HB | |
| p9 | pArg9N | Asp77OD1 | 3.0 | HB |
| pArg9NE | Asp116OD2 | 2.8 | SB | |
| pArg9NH1 | Asp77OD2 | 2.8 | SB | |
| pArg9NH1 | Asp74OD1 | 2.9 | SB | |
| pArg9NH2 | Asp116OD2 | 2.5 | SB | |
| pArg9O | Lys146NZ | 3.4 | HB | |
| pArg9OXT | Tyr84OH | 3.0 | HB | |
| pArg9OXT | Thr143OG1 | 2.6 | HB |
Only direct contacts are included, and water-mediated contacts are omitted. Distance cut-off for hydrogen bonds (HB) and salt bridges (SB) is 3.3°Å. Letters in parenthesis indicate the conformations of the amino acid side chains. Interactions between peptide residues are listed according to their first occurrence in the sequence. Interactions of amino acids to a symmetry-related B*2705:pCAC complex are indicated by an asterisk.