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
Weak
SASA cached
Weak or marginal quality
Binding strong
Geometry medium
Native strong
SASA done
Strain ΔE
31.8 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.69, Jaccard 0.65, H-bond role recall 0.50
Reason: no major geometry red flags detected
3 protein-contact clashes
3 intramolecular clashes
62% of hydrophobic surface is solvent-exposed (8/13 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
Weak
Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.164 kcal/mol/HA)
✓ Good fit quality (FQ -10.27)
✓ Strong H-bond network (8 bonds)
✓ Deep burial (72% SASA buried)
✓ Lipophilic contacts well-matched (69%)
✗ Very high strain energy (31.8 kcal/mol)
✗ Geometry warnings
✗ Internal clashes (7)
Score
-26.768
kcal/mol
LE
-1.164
kcal/mol/HA
Fit Quality
-10.27
FQ (Leeson)
HAC
23
heavy atoms
MW
355
Da
LogP
1.24
cLogP
Final rank
4.3187
rank score
Inter norm
-1.181
normalised
Contacts
12
H-bonds 11
Interaction summary
HBA 8
HY 2
PI 2
CLASH 3
Interaction summary
HBA 8
HY 2
PI 2
CLASH 3
HBD/HBA · H-bonds (geometric)
HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 5.
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 | 6FXS | Contacts | 16 |
|---|---|---|---|
| Pose | Open native pose | HB | 0 |
| IFP residues |
ARG140
ARG144
ASN106
HIS105
HIS141
ARG46
ASP13
CYS72
GLY73
GLY75
GLY77
HIS14
ILE15
ILE76
SER74
TYR49
| ||
| Current overlap | 11 | Native recall | 0.69 |
| Jaccard | 0.65 | RMSD | - |
| HB strict | 7 | Strict recall | 0.58 |
| HB same residue+role | 5 | HB role recall | 0.50 |
| HB same residue | 5 | HB residue recall | 0.50 |
Protein summary
302 residues
| Protein target | T12 | Atoms | 4598 |
|---|---|---|---|
| Residues | 302 | Chains | 2 |
| Residue summary | ARG:576; ILE:456; VAL:448; GLU:360; ALA:340; LEU:304; TYR:252; HIS:204; PRO:196; THR:196; GLY:182; LYS:176; ASP:168; PHE:160; MET:153; SER:121 | ||
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:CSD72
All stored poses for this docking hit
| Pose | Final rank | Inter norm | Score | HB | CT | CT overlap | CT recall | HB role rec. | RMSD | Excluded | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 331 | 1.3228782768357632 | -0.988725 | -21.382 | 6 | 21 | 0 | 0.00 | 0.00 | - | no | Open |
| 448 | 2.0202156311418653 | -1.04987 | -23.3278 | 11 | 16 | 0 | 0.00 | 0.00 | - | no | Open |
| 384 | 2.1854242149608547 | -1.27322 | -27.2564 | 7 | 14 | 0 | 0.00 | 0.00 | - | no | Open |
| 299 | 2.2389127358641843 | -1.24419 | -29.3361 | 6 | 13 | 0 | 0.00 | 0.00 | - | no | Open |
| 287 | 2.3154637769101583 | -1.38961 | -30.3716 | 8 | 18 | 0 | 0.00 | 0.00 | - | no | Open |
| 399 | 2.65237204898312 | -1.17856 | -26.8652 | 7 | 15 | 0 | 0.00 | 0.00 | - | no | Open |
| 356 | 2.8549181624908866 | -0.876878 | -18.7703 | 8 | 10 | 0 | 0.00 | 0.00 | - | no | Open |
| 373 | 2.922208161032249 | -1.07201 | -27.243 | 10 | 18 | 0 | 0.00 | 0.00 | - | no | Open |
| 327 | 3.247305073357421 | -1.26001 | -30.536 | 11 | 14 | 0 | 0.00 | 0.00 | - | no | Open |
| 345 | 3.4094655135949186 | -0.917319 | -21.8665 | 6 | 13 | 0 | 0.00 | 0.00 | - | no | Open |
| 327 | 3.8869349881270736 | -1.02919 | -23.7369 | 7 | 14 | 0 | 0.00 | 0.00 | - | no | Open |
| 278 | 4.034060494388567 | -1.09949 | -24.4644 | 11 | 15 | 5 | 0.31 | 0.30 | - | no | Open |
| 294 | 4.318729724082746 | -1.18135 | -26.7685 | 11 | 12 | 11 | 0.69 | 0.50 | - | no | Current |
Molecular metrics
RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
Scoring & efficiency
Docking score
-26.768kcal/mol
Ligand efficiency (LE)
-1.1638kcal/mol/HA
Score / heavy atom count
Fit quality (FQ)
-10.272
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count
23HA
Physicochemical properties
Molecular weight
355.4Da
Lipinski: ≤ 500 Da
LogP (cLogP)
1.24
Lipinski: ≤ 5
Rotatable bonds
8
Conformational strain (MMFF94s)
Strain energy (ΔE)
31.80kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy
-56.12kcal/mol
Minimised FF energy
-87.92kcal/mol
SASA & burial
✓ computed
SASA (unbound)
569.7Ų
Total solvent-accessible surface area of free ligand
BSA total
409.9Ų
Buried surface area upon binding
BSA apolar
281.9Ų
Hydrophobic contacts buried
BSA polar
128.0Ų
Polar contacts buried
Fraction buried
72.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio
68.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA
-2093.4Ų
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
2454.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA
772.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)