Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
3D complex viewer
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Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak
SASA cached
Promising but geometrically suspicious
Binding strong
Geometry low
Native strong
SASA done
Strain ΔE
26.2 kcal/mol
Protein clashes
0
Internal clashes
15
Native overlap
contact recall 0.88, Jaccard 0.54, H-bond role recall 1.00
Reason: 15 internal clashes
15 intramolecular clashes
36% of hydrophobic surface appears solvent-exposed (9/25 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Weak
Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.600 kcal/mol/HA)
✓ Good fit quality (FQ -5.84)
✓ Good H-bonds (5 bonds)
✓ Good burial (55% SASA buried)
✓ Lipophilic contacts well-matched (90%)
✗ High strain energy (26.2 kcal/mol)
✗ Geometry warnings
✗ Many internal clashes (15)
Score
-18.584
kcal/mol
LE
-0.600
kcal/mol/HA
Fit Quality
-5.84
FQ (Leeson)
HAC
31
heavy atoms
MW
416
Da
LogP
3.75
cLogP
Interaction summary
HB 5
HY 10
PI 2
CLASH 0
⚠ Exposure 36%
Interaction summary
HB 5
HY 10
PI 2
CLASH 0
⚠ Exposure 36%
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
No clash · clashes detected for this pose.
Partial hydrophobic solvent exposure
36% of hydrophobic surface appears solvent-exposed (9/25 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 25
Buried (contacted) 16
Exposed 9
LogP 3.75
H-bonds 5
Exposed fragments:
phenyl (6/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
| Final rank | 4.711 | Score | -18.584 |
|---|---|---|---|
| Inter norm | -0.683 | Intra norm | 0.084 |
| Top1000 | no | Excluded | no |
| Contacts | 12 | H-bonds | 5 |
| Artifact reason | geometry warning; 15 clashes; 3 protein clashes; moderate strain Δ 22.3 | ||
| Residues |
ASN402
GLU466
GLU467
LEU399
LYS407
LYS410
PHE396
PRO398
SER394
SER464
THR397
THR463
| ||
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 | 0.54 | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 242 | 1.933586563779863 | -0.937196 | -21.0402 | 3 | 13 | 0 | 0.00 | 0.00 | - | no | Open |
| 211 | 4.646651250388195 | -1.08199 | -33.4713 | 10 | 22 | 0 | 0.00 | 0.00 | - | no | Open |
| 278 | 4.71083283317276 | -0.683344 | -18.5845 | 5 | 12 | 7 | 0.88 | 1.00 | - | no | Current |
| 219 | 5.35149050242467 | -0.857702 | -23.3039 | 4 | 12 | 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
-18.584kcal/mol
Ligand efficiency (LE)
-0.5995kcal/mol/HA
Score / heavy atom count
Fit quality (FQ)
-5.841
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count
31HA
Physicochemical properties
Molecular weight
416.5Da
Lipinski: ≤ 500 Da
LogP (cLogP)
3.75
Lipinski: ≤ 5
Rotatable bonds
11
Conformational strain (MMFF94s)
Strain energy (ΔE)
26.16kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy
76.80kcal/mol
Minimised FF energy
50.64kcal/mol
SASA & burial
✓ computed
SASA (unbound)
717.5Ų
Total solvent-accessible surface area of free ligand
BSA total
393.9Ų
Buried surface area upon binding
BSA apolar
353.1Ų
Hydrophobic contacts buried
BSA polar
40.8Ų
Polar contacts buried
Fraction buried
54.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio
89.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA
-3192.5Ų
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
1540.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)