Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
3D complex viewer
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject
SASA cached
Promising but geometrically suspicious
Binding strong
Geometry low
Native strong
SASA done
Strain ΔE
71.1 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.71, Jaccard 0.53, H-bond role recall 0.22
Reason: strain 71.1 kcal/mol
strain ΔE 71.1 kcal/mol
2 protein-contact clashes
77% of hydrophobic surface is solvent-exposed (20/26 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Molecular report
Reject
Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.449 kcal/mol/HA)
✓ Good fit quality (FQ -4.69)
✓ Strong H-bond network (11 bonds)
✓ Deep burial (66% SASA buried)
✓ Lipophilic contacts well-matched (71%)
✗ Extreme strain energy (71.1 kcal/mol)
✗ Geometry warnings
✗ Many internal clashes (15)
Score
-17.960
kcal/mol
LE
-0.449
kcal/mol/HA
Fit Quality
-4.69
FQ (Leeson)
HAC
40
heavy atoms
MW
600
Da
LogP
5.35
cLogP
Interaction summary
HB 11
HY 6
PI 2
CLASH 2
⚠ Exposure 76%
Interaction summary
HB 11
HY 6
PI 2
CLASH 2
⚠ Exposure 76%
Solvent-exposed hydrophobic surface — desolvation penalty likely
77% of hydrophobic surface is solvent-exposed (20/26 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Non-polar atoms 26
Buried (contacted) 6
Exposed 20
LogP 5.35
H-bonds 11
Exposed fragments:
phenyl (6/6 atoms exposed)phenyl (3/5 atoms exposed)phenyl (4/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (1 atom exposed)
| Final rank | 5.049 | Score | -17.960 |
|---|---|---|---|
| Inter norm | -0.651 | Intra norm | 0.202 |
| Top1000 | no | Excluded | no |
| Contacts | 15 | H-bonds | 11 |
| Artifact reason | geometry warning; 15 clashes; 3 protein clashes; high strain Δ 69.7 | ||
| Residues |
ARG137
ARG140
ARG141
ASN103
HIS102
HIS138
MET98
TYR94
ARG113
CYS69
GLY70
HIS11
SER43
SER71
TYR46
| ||
Protein summary
305 residues
| Protein target | T21 | Atoms | 4646 |
|---|---|---|---|
| Residues | 305 | Chains | 2 |
| Residue summary | ARG:576; ILE:532; VAL:512; GLU:420; ALA:360; PHE:240; HIS:238; LYS:220; THR:210; LEU:190; PRO:168; TYR:168; GLY:154; SER:154; ASP:144; ASN:112 | ||
Native ligand reference
★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
| Name | 3K7O | Contacts | 14 |
|---|---|---|---|
| Pose | Open native pose | HB | 0 |
| IFP residues |
ARG137
ARG141
ASN103
HIS102
HIS138
ASP10
CYS69
GLY70
GLY74
HIS11
ILE73
PRO12
SER71
TYR46
| ||
| Current overlap | 10 | Native recall | 0.71 |
| Jaccard | 0.53 | RMSD | - |
| HB strict | 3 | Strict recall | 0.25 |
| HB same residue+role | 2 | HB role recall | 0.22 |
| HB same residue | 2 | HB residue recall | 0.25 |
HB · H-bonds
Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.
PI · π–π interactions
Native π–π recall is disabled because no explicit native π–π reference was stored.
HY · Hydrophobic contacts
CLASH · Clashes
All stored poses for this docking hit
| Pose | Final rank | Inter norm | Score | HB | CT | CT overlap | CT recall | HB role rec. | RMSD | Excluded | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 647 | 1.655206940734419 | -0.819515 | -28.7233 | 10 | 19 | 0 | 0.00 | 0.00 | - | no | Open |
| 637 | 1.9919255499789645 | -0.660263 | -24.0087 | 4 | 20 | 0 | 0.00 | 0.00 | - | no | Open |
| 652 | 2.8663488686206215 | -0.732871 | -23.2219 | 5 | 19 | 0 | 0.00 | 0.00 | - | no | Open |
| 656 | 3.111096291773 | -0.754121 | -23.759 | 6 | 15 | 0 | 0.00 | 0.00 | - | no | Open |
| 659 | 3.601081322712858 | -0.563277 | -17.528 | 5 | 14 | 0 | 0.00 | 0.00 | - | no | Open |
| 654 | 4.434217865717842 | -0.481317 | -16.1264 | 7 | 12 | 0 | 0.00 | 0.00 | - | no | Open |
| 665 | 5.049174033450789 | -0.651119 | -17.9603 | 11 | 15 | 10 | 0.71 | 0.22 | - | no | Current |
Molecular metrics
RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
Scoring & efficiency
Docking score
-17.960kcal/mol
Ligand efficiency (LE)
-0.4490kcal/mol/HA
Score / heavy atom count
Fit quality (FQ)
-4.689
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count
40HA
Physicochemical properties
Molecular weight
600.1Da
Lipinski: ≤ 500 Da
LogP (cLogP)
5.35
Lipinski: ≤ 5
Rotatable bonds
9
Conformational strain (MMFF94s)
Strain energy (ΔE)
71.14kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy
138.65kcal/mol
Minimised FF energy
67.51kcal/mol
SASA & burial
✓ computed
SASA (unbound)
840.2Ų
Total solvent-accessible surface area of free ligand
BSA total
557.0Ų
Buried surface area upon binding
BSA apolar
393.7Ų
Hydrophobic contacts buried
BSA polar
163.4Ų
Polar contacts buried
Fraction buried
66.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio
70.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA
-2338.8Ų
SASA_nonpolar(complex) − SASA_nonpolar(receptor) − SASA_nonpolar(ligand free). Negative = non-polar surface buried upon binding. Requires full polarity-decomposed SASA computation.
Receptor non-polar SASA
2482.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA
785.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)