FAIRMol

Z68347496

Pose ID 12752 Compound 1425 Pose 551

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 Z68347496
PDB2WOV

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Weak or marginal quality
Binding strong Geometry medium Native mixed SASA done
Strain ΔE
33.8 kcal/mol
Protein clashes
1
Internal clashes
2
Native overlap
contact recall 0.44, Jaccard 0.43, H-bond role recall 0.40
Burial
64%
Hydrophobic fit
79%
Reason: no major geometry red flags detected
1 protein-contact clashes 71% of hydrophobic surface is solvent-exposed (15/21 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 ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.144 kcal/mol/HA) ✓ Good fit quality (FQ -11.04) ✓ Strong H-bond network (10 bonds) ✓ Good burial (64% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ Very high strain energy (33.8 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Many internal clashes (12)
Score
-34.326
kcal/mol
LE
-1.144
kcal/mol/HA
Fit Quality
-11.04
FQ (Leeson)
HAC
30
heavy atoms
MW
425
Da
LogP
3.15
cLogP
Strain ΔE
33.8 kcal/mol
SASA buried
64%
Lipo contact
79% BSA apolar/total
SASA unbound
700 Ų
Apolar buried
357 Ų

Interaction summary

HB 10 HY 7 PI 1 CLASH 2 ⚠ Exposure 71%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
71% of hydrophobic surface is solvent-exposed (15/21 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 21 Buried (contacted) 6 Exposed 15 LogP 3.15 H-bonds 10
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
Final rank0.786Score-34.326
Inter norm-1.069Intra norm-0.075
Top1000noExcludedno
Contacts13H-bonds10
Artifact reasongeometry warning; 12 clashes; 3 protein contact clashes; 4 cofactor-context clashes; high strain Δ 33.8
Residues
ARG222 ARG228 ASN223 GLN165 GLY196 GLY197 GLY286 ILE285 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 overlap12Native recall0.44
Jaccard0.43RMSD-
HB strict1Strict recall0.08
HB same residue+role2HB role recall0.40
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

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
551 0.7863990384040856 -1.0689 -34.3256 10 13 12 0.44 0.40 - no Current
540 2.01639219542086 -0.846568 -22.4366 9 19 0 0.00 0.00 - no Open
597 2.6257543792701297 -0.791858 -27.3268 6 16 0 0.00 0.00 - no Open
552 2.841916052752017 -1.32572 -41.1595 11 19 0 0.00 0.00 - no Open
543 2.925843509730519 -1.38782 -43.7879 9 19 0 0.00 0.00 - no Open
577 3.073966426611157 -0.901 -28.5624 12 17 0 0.00 0.00 - no Open
554 3.391884301661245 -0.86851 -30.1896 8 19 0 0.00 0.00 - no Open
566 3.7897586704157433 -0.890481 -21.4571 10 12 0 0.00 0.00 - no Open
571 4.379321273351954 -0.866284 -27.1145 5 17 0 0.00 0.00 - no Open
577 4.446355622158319 -0.795751 -23.7085 6 19 0 0.00 0.00 - no Open
556 4.761776816752896 -0.850102 -27.284 9 14 0 0.00 0.00 - no Open
566 4.827703850716491 -1.36608 -35.1918 12 19 0 0.00 0.00 - no Open
581 5.166757877468878 -0.708586 -24.5919 8 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 -34.326kcal/mol
Ligand efficiency (LE) -1.1442kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.037
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 425.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.15
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 33.78kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 59.73kcal/mol
Minimised FF energy 25.95kcal/mol

SASA & burial

✓ computed
SASA (unbound) 699.9Ų
Total solvent-accessible surface area of free ligand
BSA total 450.4Ų
Buried surface area upon binding
BSA apolar 356.5Ų
Hydrophobic contacts buried
BSA polar 93.9Ų
Polar contacts buried
Fraction buried 64.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3048.9Ų
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 1555.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)