TABLE 2.
Hydrogen bond and aromatic-sugar interactions between maltotetraose and SAP-L protein atomsa
| Source ligand atom and interaction type | Target atom | Bond distance (Å) |
|---|---|---|
| Hydrogen bond | ||
| GLC2(O2) | Arg866(NH2) | 3.2 |
| Asp863(OD2) | 2.8 | |
| GLC2(O3) | Arg866(NH1) | 3.0 |
| Arg866(NH2) | 3.4 | |
| GLC3(O3) | Asn920(OD1) | 3.4 |
| Asn920(ND2) | 3.4 | |
| Asp919(OD2) | 3.3 | |
| Aromatic-sugar (C-H-π) interaction | ||
| GLC2 | Trp833 | ≤4.0 |
| GLC3 | Phe873 | ≤4.0 |
a
Bond distances between the individual sugar units (GLC1 to -3) of MTT and the target protein residues are shown, together with the participating atoms.