FAIRMol

OHD_TB2021_36

Pose ID 3441 Compound 1141 Pose 55

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T06
T. brucei DHFR T. brucei
Ligand OHD_TB2021_36
PDB8RHT

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
70.0 kcal/mol
Protein clashes
2
Internal clashes
3
Native overlap
contact recall 0.71, Jaccard 0.65, H-bond role recall 0.25
Burial
97%
Hydrophobic fit
64%
Reason: strain 70.0 kcal/mol
strain ΔE 70.0 kcal/mol 2 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.889 kcal/mol/HA) ✓ Good fit quality (FQ -7.84) ✓ Good H-bonds (5 bonds) ✓ Deep burial (97% SASA buried) ✓ Lipophilic contacts well-matched (64%) ✗ Extreme strain energy (70.0 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (6)
Score
-20.437
kcal/mol
LE
-0.889
kcal/mol/HA
Fit Quality
-7.84
FQ (Leeson)
HAC
23
heavy atoms
MW
347
Da
LogP
-0.54
cLogP
Strain ΔE
70.0 kcal/mol
SASA buried
97%
Lipo contact
64% BSA apolar/total
SASA unbound
574 Ų
Apolar buried
354 Ų

Interaction summary

HB 5 HY 19 PI 1 CLASH 3

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

Final rank1.864Score-20.437
Inter norm-1.027Intra norm0.138
Top1000noExcludedno
Contacts17H-bonds5
Artifact reasongeometry warning; 6 clashes; 1 protein clash; 1 cofactor-context clash; high strain Δ 58.6
Residues
ALA34 ARG100 ARG59 ASP54 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE58 PHE94 SER89 THR86 TYR166 VAL32 VAL33

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name8RHTContacts21
PoseOpen native poseHB0
IFP residues
ALA34 ASP54 HIS182 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE233 PHE58 PHE94 PRO91 SER89 THR184 THR86 TRP49 TYR166 TYR57 VAL32 VAL33
Current overlap15Native recall0.71
Jaccard0.65RMSD-
HB strict1Strict recall0.20
HB same residue+role1HB role recall0.25
HB same residue1HB residue recall0.25

Protein summary

223 residues
Protein targetT06Atoms3452
Residues223Chains1
Residue summaryARG:408; VAL:352; LYS:308; LEU:304; PRO:238; ILE:209; GLU:195; THR:182; SER:176; ALA:160; PHE:140; ASN:126; GLY:126; ASP:108; GLN:85; NDP:74

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
A:NDP301

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
52 0.39888311726196213 -1.49478 -32.7747 11 17 0 0.00 0.00 - no Open
63 1.390351737555636 -1.47841 -33.555 16 17 0 0.00 0.00 - no Open
64 1.5404708740171311 -1.28844 -24.3069 11 18 1 0.05 0.00 - no Open
55 1.8635607182521439 -1.02657 -20.4374 5 17 15 0.71 0.25 - no Current
36 5.629077189323515 -1.04968 -16.0535 16 17 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 -20.437kcal/mol
Ligand efficiency (LE) -0.8886kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.842
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 347.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) -0.54
Lipinski: ≤ 5
Rotatable bonds 11

Conformational strain (MMFF94s)

Strain energy (ΔE) 69.97kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 92.51kcal/mol
Minimised FF energy 22.55kcal/mol

SASA & burial

✓ computed
SASA (unbound) 574.1Ų
Total solvent-accessible surface area of free ligand
BSA total 556.8Ų
Buried surface area upon binding
BSA apolar 353.9Ų
Hydrophobic contacts buried
BSA polar 202.9Ų
Polar contacts buried
Fraction buried 97.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 63.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1593.9Ų
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 1808.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 573.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)