FAIRMol

OHD_MAC_51

Pose ID 12512 Compound 215 Pose 311

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_MAC_51
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
46.4 kcal/mol
Protein clashes
2
Internal clashes
3
Native overlap
contact recall 0.37, Jaccard 0.34, H-bond role recall 0.60
Burial
58%
Hydrophobic fit
70%
Reason: strain 46.4 kcal/mol
strain ΔE 46.4 kcal/mol 2 protein-contact clashes 3 intramolecular clashes 73% of hydrophobic surface is solvent-exposed (16/22 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
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.738 kcal/mol/HA) ✓ Good fit quality (FQ -7.38) ✓ Strong H-bond network (15 bonds) ✓ Good burial (58% SASA buried) ✓ Lipophilic contacts well-matched (70%) ✗ Extreme strain energy (46.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-25.082
kcal/mol
LE
-0.738
kcal/mol/HA
Fit Quality
-7.38
FQ (Leeson)
HAC
34
heavy atoms
MW
463
Da
LogP
2.49
cLogP
Strain ΔE
46.4 kcal/mol
SASA buried
58%
Lipo contact
70% BSA apolar/total
SASA unbound
786 Ų
Apolar buried
321 Ų

Interaction summary

HB 15 HY 2 PI 0 CLASH 3 ⚠ Exposure 72%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
73% of hydrophobic surface is solvent-exposed (16/22 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Non-polar atoms 22 Buried (contacted) 6 Exposed 16 LogP 2.49 H-bonds 15
Exposed fragments: phenyl (4/6 atoms exposed)phenyl (4/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (4 atoms exposed)
Final rank2.467Score-25.082
Inter norm-0.962Intra norm0.224
Top1000noExcludedno
Contacts12H-bonds15
Artifact reasongeometry warning; 13 clashes; 1 protein clash; 1 severe cofactor-context clash; high strain Δ 46.4
Residues
ARG222 ARG228 ASN254 GLN165 GLU271 GLY196 GLY197 LEU227 NDP800 PHE198 PHE230 TYR221

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 overlap10Native recall0.37
Jaccard0.34RMSD-
HB strict4Strict recall0.33
HB same residue+role3HB role recall0.60
HB same residue2HB residue recall0.50

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
431 1.2451313644528765 -0.868392 -23.2635 8 17 0 0.00 0.00 - no Open
446 1.559678130814029 -0.851204 -20.736 8 22 0 0.00 0.00 - no Open
367 1.7363078992118561 -0.747066 -18.0906 9 15 0 0.00 0.00 - no Open
311 2.4665199956745942 -0.961514 -25.0817 15 12 10 0.37 0.60 - no Current
375 2.6334168552091985 -0.798666 -19.7113 4 14 0 0.00 0.00 - no Open
359 2.7914438196960063 -0.974924 -30.1583 3 18 0 0.00 0.00 - no Open
400 3.2292764609267595 -0.842641 -19.4456 8 15 0 0.00 0.00 - no Open
360 3.3520427793386554 -0.671838 -19.9977 8 12 0 0.00 0.00 - no Open
353 3.5046443281454978 -0.72972 -21.574 11 13 0 0.00 0.00 - no Open
370 5.275585035867206 -0.916306 -26.3461 16 19 0 0.00 0.00 - no Open
476 5.337543218588304 -0.846288 -25.8914 8 17 0 0.00 0.00 - no Open
349 5.748052224316116 -0.929491 -21.2046 16 25 0 0.00 0.00 - no Open
316 6.990391588971337 -0.834522 -16.6889 15 18 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 -25.082kcal/mol
Ligand efficiency (LE) -0.7377kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.381
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 463.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.49
Lipinski: ≤ 5
Rotatable bonds 13

Conformational strain (MMFF94s)

Strain energy (ΔE) 46.43kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 112.93kcal/mol
Minimised FF energy 66.50kcal/mol

SASA & burial

✓ computed
SASA (unbound) 786.1Ų
Total solvent-accessible surface area of free ligand
BSA total 456.0Ų
Buried surface area upon binding
BSA apolar 321.1Ų
Hydrophobic contacts buried
BSA polar 134.9Ų
Polar contacts buried
Fraction buried 58.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 70.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3108.7Ų
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 1567.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)