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
45.3 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.88, Jaccard 0.64, H-bond role recall 1.00
Reason: strain 45.3 kcal/mol
strain ΔE 45.3 kcal/mol
3 protein-contact clashes
3 intramolecular clashes
71% of hydrophobic surface is solvent-exposed (20/28 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 (-0.537 kcal/mol/HA)
✓ Good fit quality (FQ -5.50)
✓ Good H-bonds (4 bonds)
✓ Good burial (51% SASA buried)
✓ Lipophilic contacts well-matched (92%)
✗ Extreme strain energy (45.3 kcal/mol)
✗ Geometry warnings
✗ Many internal clashes (20)
Score
-19.886
kcal/mol
LE
-0.537
kcal/mol/HA
Fit Quality
-5.50
FQ (Leeson)
HAC
37
heavy atoms
MW
498
Da
LogP
2.19
cLogP
Final rank
3.7655
rank score
Inter norm
-0.548
normalised
Contacts
10
H-bonds 6
Interaction summary
HBD 2
HBA 2
HY 2
PI 1
CLASH 3
Interaction summary
HBD 2
HBA 2
HY 2
PI 1
CLASH 3
HBD/HBA · H-bonds (geometric)
HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 4.
PI · π–π interactions
Native π–π recall is disabled because no explicit native π–π reference was stored.
HY · Hydrophobic contacts
CLASH · Clashes
Native ligand reference
★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
| Name | 9IFH | Contacts | 8 |
|---|---|---|---|
| Pose | Open native pose | HB | 0 |
| IFP residues |
ASN402
GLU467
LEU399
PHE396
PRO398
SER394
SER470
THR397
| ||
| Current overlap | 7 | Native recall | 0.88 |
| Jaccard | 0.64 | RMSD | - |
| HB strict | 1 | Strict recall | 0.50 |
| HB same residue+role | 1 | HB role recall | 1.00 |
| HB same residue | 1 | HB residue recall | 1.00 |
Protein summary
492 residues
| Protein target | T20 | Atoms | 7539 |
|---|---|---|---|
| Residues | 492 | Chains | 1 |
| Residue summary | VAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:264; MET:221 | ||
Receptor context
1 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 1
Excluded HETATM 0
Kept cofactors / ions
A:FAD501
All stored poses for this docking hit
| Pose | Final rank | Inter norm | Score | HB | CT | CT overlap | CT recall | HB role rec. | RMSD | Excluded | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 138 | 2.2200071524537455 | -0.72598 | -26.0638 | 3 | 17 | 0 | 0.00 | 0.00 | - | no | Open |
| 154 | 3.2345112089005923 | -0.801538 | -28.9843 | 5 | 21 | 0 | 0.00 | 0.00 | - | no | Open |
| 116 | 3.357421775228675 | -0.666954 | -23.6678 | 2 | 16 | 0 | 0.00 | 0.00 | - | no | Open |
| 150 | 3.765454442357164 | -0.548404 | -19.8855 | 6 | 10 | 7 | 0.88 | 1.00 | - | no | Current |
| 154 | 4.2674717542737 | -0.656274 | -22.3533 | 9 | 11 | 0 | 0.00 | 0.00 | - | no | Open |
Molecular metrics
RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
Scoring & efficiency
Docking score
-19.886kcal/mol
Ligand efficiency (LE)
-0.5374kcal/mol/HA
Score / heavy atom count
Fit quality (FQ)
-5.502
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count
37HA
Physicochemical properties
Molecular weight
497.6Da
Lipinski: ≤ 500 Da
LogP (cLogP)
2.19
Lipinski: ≤ 5
Rotatable bonds
6
Conformational strain (MMFF94s)
Strain energy (ΔE)
45.30kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy
32.12kcal/mol
Minimised FF energy
-13.17kcal/mol
SASA & burial
✓ computed
SASA (unbound)
774.5Ų
Total solvent-accessible surface area of free ligand
BSA total
393.8Ų
Buried surface area upon binding
BSA apolar
363.9Ų
Hydrophobic contacts buried
BSA polar
29.8Ų
Polar contacts buried
Fraction buried
50.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio
92.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA
-3231.1Ų
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
4069.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA
1533.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)