FAIRMol

OHD_TB2022_27

Pose ID 12241 Compound 1429 Pose 40

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_TB2022_27
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 strong SASA done
Strain ΔE
58.2 kcal/mol
Protein clashes
1
Internal clashes
4
Native overlap
contact recall 0.33, Jaccard 0.28, H-bond role recall 0.60
Burial
70%
Hydrophobic fit
79%
Reason: strain 58.2 kcal/mol
strain ΔE 58.2 kcal/mol 1 protein-contact clashes 4 intramolecular clashes 48% of hydrophobic surface appears solvent-exposed (12/25 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 (-0.880 kcal/mol/HA) ✓ Good fit quality (FQ -8.95) ✓ Strong H-bond network (12 bonds) ✓ Deep burial (70% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ Extreme strain energy (58.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (15)
Score
-31.697
kcal/mol
LE
-0.880
kcal/mol/HA
Fit Quality
-8.95
FQ (Leeson)
HAC
36
heavy atoms
MW
511
Da
LogP
-0.77
cLogP
Strain ΔE
58.2 kcal/mol
SASA buried
70%
Lipo contact
79% BSA apolar/total
SASA unbound
792 Ų
Apolar buried
438 Ų

Interaction summary

HB 12 HY 7 PI 0 CLASH 4 ⚠ Exposure 48%

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

⚠️Partial hydrophobic solvent exposure
48% of hydrophobic surface appears solvent-exposed (12/25 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 25 Buried (contacted) 13 Exposed 12 LogP -0.77 H-bonds 12
Exposed fragments: phenyl (6/6 atoms exposed)aliphatic chain/group (6 atoms exposed)
Final rank4.136Score-31.697
Inter norm-0.881Intra norm0.000
Top1000noExcludedno
Contacts14H-bonds12
Artifact reasongeometry warning; 15 clashes; 2 protein clashes; 1 severe cofactor-context clash; high strain Δ 58.2
Residues
ARG222 ARG228 ARG287 ARG331 ASP330 GLN165 GLY229 GLY286 ILE285 ILE288 LEU227 LEU332 MET333 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 overlap9Native recall0.33
Jaccard0.28RMSD-
HB strict3Strict recall0.25
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.75

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
72 3.8594501751747776 -0.827056 -23.8656 4 22 0 0.00 0.00 - no Open
40 4.135873877091396 -0.880898 -31.6966 12 14 9 0.33 0.60 - no Current
57 4.246759468271501 -0.595939 -22.8076 6 16 0 0.00 0.00 - no Open
68 5.222560969371158 -0.606925 -19.6983 10 15 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 -31.697kcal/mol
Ligand efficiency (LE) -0.8805kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.949
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 510.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) -0.77
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 58.25kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 28.97kcal/mol
Minimised FF energy -29.28kcal/mol

SASA & burial

✓ computed
SASA (unbound) 792.4Ų
Total solvent-accessible surface area of free ligand
BSA total 551.3Ų
Buried surface area upon binding
BSA apolar 437.7Ų
Hydrophobic contacts buried
BSA polar 113.6Ų
Polar contacts buried
Fraction buried 69.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3182.2Ų
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 1530.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)