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
Weak or marginal quality
Binding strong
Geometry medium
Native strong
SASA done
Strain ΔE
26.6 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.77, Jaccard 0.56
Reason: no major geometry red flags detected
4 protein-contact clashes
4 intramolecular clashes
Molecular report
Weak
Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.625 kcal/mol/HA)
✓ Good fit quality (FQ -6.03)
✓ Deep burial (72% SASA buried)
✓ Lipophilic contacts well-matched (93%)
✗ High strain energy (26.6 kcal/mol)
✗ Geometry warnings
✗ Many internal clashes (13)
Score
-18.740
kcal/mol
LE
-0.625
kcal/mol/HA
Fit Quality
-6.03
FQ (Leeson)
HAC
30
heavy atoms
MW
449
Da
LogP
3.44
cLogP
Final rank
3.7311
rank score
Inter norm
-0.809
normalised
Contacts
15
H-bonds 4
Interaction summary
HBD 2
HY 7
PI 2
CLASH 4
Interaction summary
HBD 2
HY 7
PI 2
CLASH 4
HBD/HBA · H-bonds (geometric)
HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 2.
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: permissive.
| Name | 6RB5 | Contacts | 13 |
|---|---|---|---|
| Pose | Open native pose | HB | 0 |
| IFP residues |
ASP116
GLU18
GLY112
ILE106
LEU17
MET113
SER109
THR117
THR335
TRP21
TYR110
VAL53
VAL58
| ||
| Current overlap | 10 | Native recall | 0.77 |
| Jaccard | 0.56 | RMSD | - |
| HB strict | 0 | Strict recall | - |
| HB same residue+role | 0 | HB role recall | - |
| HB same residue | 0 | HB residue recall | - |
Protein summary
493 residues
| Protein target | T18 | Atoms | 7550 |
|---|---|---|---|
| Residues | 493 | 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:276; 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 557 | 3.7311310916934195 | -0.809178 | -18.7403 | 4 | 15 | 10 | 0.77 | - | - | no | Current |
Molecular metrics
RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
Scoring & efficiency
Docking score
-18.740kcal/mol
Ligand efficiency (LE)
-0.6247kcal/mol/HA
Score / heavy atom count
Fit quality (FQ)
-6.026
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count
30HA
Physicochemical properties
Molecular weight
449.4Da
Lipinski: ≤ 500 Da
LogP (cLogP)
3.44
Lipinski: ≤ 5
Rotatable bonds
7
Conformational strain (MMFF94s)
Strain energy (ΔE)
26.64kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy
163.74kcal/mol
Minimised FF energy
137.11kcal/mol
SASA & burial
✓ computed
SASA (unbound)
741.9Ų
Total solvent-accessible surface area of free ligand
BSA total
536.7Ų
Buried surface area upon binding
BSA apolar
497.5Ų
Hydrophobic contacts buried
BSA polar
39.2Ų
Polar contacts buried
Fraction buried
72.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio
92.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA
-3262.5Ų
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
4076.6Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA
1492.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)