FAIRMol

OHD_TB2020_19

Pose ID 12233 Compound 2517 Pose 32

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 OHD_TB2020_19
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
57.9 kcal/mol
Protein clashes
5
Internal clashes
6
Native overlap
contact recall 0.44, Jaccard 0.40, H-bond role recall 0.20
Burial
81%
Hydrophobic fit
77%
Reason: 6 internal clashes, strain 57.9 kcal/mol
strain ΔE 57.9 kcal/mol 5 protein-contact clashes 6 intramolecular clashes 55% of hydrophobic surface appears solvent-exposed (11/20 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 (-0.966 kcal/mol/HA) ✓ Good fit quality (FQ -9.22) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (81% SASA buried) ✓ Lipophilic contacts well-matched (77%) ✗ Extreme strain energy (57.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-28.001
kcal/mol
LE
-0.966
kcal/mol/HA
Fit Quality
-9.22
FQ (Leeson)
HAC
29
heavy atoms
MW
421
Da
LogP
2.01
cLogP
Strain ΔE
57.9 kcal/mol
SASA buried
81%
Lipo contact
77% BSA apolar/total
SASA unbound
675 Ų
Apolar buried
420 Ų

Interaction summary

HB 7 HY 11 PI 2 CLASH 6 ⚠ Exposure 55%
⚠️Partial hydrophobic solvent exposure
55% of hydrophobic surface appears solvent-exposed (11/20 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 20 Buried (contacted) 9 Exposed 11 LogP 2.01 H-bonds 7
Exposed fragments: phenyl (6/6 atoms exposed)aliphatic chain/group (5 atoms exposed)
Final rank2.527Score-28.001
Inter norm-1.106Intra norm0.140
Top1000noExcludedno
Contacts15H-bonds7
Artifact reasongeometry warning; 11 clashes; 1 protein clash; 4 cofactor-context clashes; high strain Δ 57.9
Residues
ARG222 ARG228 ARG287 GLN165 GLY196 GLY197 GLY286 ILE285 ILE288 LEU227 LEU332 MET333 NDP800 PHE198 PHE230

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

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 overlap12Native recall0.44
Jaccard0.40RMSD-
HB strict0Strict recall0.00
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.25

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
46 1.3061135800995796 -0.833631 -15.0981 5 17 0 0.00 0.00 - no Open
32 2.5267981267085653 -1.1057 -28.001 7 15 12 0.44 0.20 - no Current
39 2.984454236444561 -0.957658 -27.8854 10 17 0 0.00 0.00 - no Open
54 3.3433164112676046 -0.879147 -23.3489 10 15 0 0.00 0.00 - no Open
51 3.842845825095622 -0.729544 -17.075 6 14 0 0.00 0.00 - no Open

Molecular metrics

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

Scoring & efficiency

Docking score -28.001kcal/mol
Ligand efficiency (LE) -0.9656kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.217
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 420.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.01
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 57.87kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 73.56kcal/mol
Minimised FF energy 15.69kcal/mol

SASA & burial

✓ computed
SASA (unbound) 675.1Ų
Total solvent-accessible surface area of free ligand
BSA total 546.5Ų
Buried surface area upon binding
BSA apolar 420.4Ų
Hydrophobic contacts buried
BSA polar 126.1Ų
Polar contacts buried
Fraction buried 80.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 76.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3077.9Ų
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 1516.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)