FAIRMol

ulfkktlib_3777

Pose ID 12449 Compound 5087 Pose 248

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T19
T. brucei TR (NADPH binding site) T. brucei NADPH binding site
Ligand ulfkktlib_3777
PDB2WOV

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native mixed SASA done
Strain ΔE
100.0 kcal/mol
Protein clashes
5
Internal clashes
6
Native overlap
contact recall 0.30, Jaccard 0.19, H-bond role recall 0.00
Burial
91%
Hydrophobic fit
73%
Reason: 6 internal clashes, strain 100.0 kcal/mol
strain ΔE 100.0 kcal/mol 5 protein-contact clashes 6 intramolecular clashes 35% of hydrophobic surface appears solvent-exposed (7/20 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.893 kcal/mol/HA) ✓ Good fit quality (FQ -8.78) ✓ Good H-bonds (4 bonds) ✓ Deep burial (91% SASA buried) ✓ Lipophilic contacts well-matched (73%) ✗ Extreme strain energy (100.0 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (10) ✗ Many internal clashes (13)
Score
-28.564
kcal/mol
LE
-0.893
kcal/mol/HA
Fit Quality
-8.78
FQ (Leeson)
HAC
32
heavy atoms
MW
460
Da
LogP
2.54
cLogP
Final rank
2.2191
rank score
Inter norm
-0.980
normalised
Contacts
23
H-bonds 10
Strain ΔE
100.0 kcal/mol
SASA buried
91%
Lipo contact
73% BSA apolar/total
SASA unbound
758 Ų
Apolar buried
504 Ų

Interaction summary

HBA 4 PC 1 HY 7 PI 1 CLASH 6

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PC · Polar contacts (possible, no H geometry)

HBD?/HBA? — heavy-atom distance only, H geometry unavailable. May be real H-bonds.

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.
Name2WOVContacts27
PoseOpen native poseHB0
IFP residues
ALA284 ALA365 ARG222 ARG228 ARG287 ASN223 ASN254 GLN165 GLU202 GLY195 GLY196 GLY197 GLY286 ILE199 ILE285 LEU227 LEU334 LYS60 MET333 NDP800 PHE198 PHE367 PRO167 SER200 TYR221 VAL194 VAL366
Current overlap8Native recall0.30
Jaccard0.19RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

493 residues
Protein targetT19Atoms7541
Residues493Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:330; 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
C:NDP800

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
248 2.2191141937040815 -0.980464 -28.5644 10 23 8 0.30 0.00 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -28.564kcal/mol
Ligand efficiency (LE) -0.8926kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.778
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 460.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.54
Lipinski: ≤ 5
Rotatable bonds 11

Conformational strain (MMFF94s)

Strain energy (ΔE) 99.99kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 147.54kcal/mol
Minimised FF energy 47.55kcal/mol

SASA & burial

✓ computed
SASA (unbound) 757.9Ų
Total solvent-accessible surface area of free ligand
BSA total 690.8Ų
Buried surface area upon binding
BSA apolar 504.2Ų
Hydrophobic contacts buried
BSA polar 186.6Ų
Polar contacts buried
Fraction buried 91.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 73.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3136.4Ų
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 4064.7Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1462.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)