FAIRMol

OHD_TbNat_105

Pose ID 10927 Compound 590 Pose 84

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T17
T. brucei TR (Doorstop site) T. brucei Doorstop site
Ligand OHD_TbNat_105
PDB5S9T

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
32.3 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.83, Jaccard 0.45, H-bond role recall 0.00
Burial
76%
Hydrophobic fit
67%
Reason: no major geometry red flags detected
1 protein-contact clashes 43% of hydrophobic surface appears solvent-exposed (9/21 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>100 mg/L)
Algae IC₅₀
Not classified (>100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Low
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 -9.41) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (67%) ✗ Very high strain energy (32.3 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (7) ✗ Many internal clashes (15)
Score
-29.945
kcal/mol
LE
-0.966
kcal/mol/HA
Fit Quality
-9.41
FQ (Leeson)
HAC
31
heavy atoms
MW
434
Da
LogP
-0.43
cLogP
Final rank
1.9284
rank score
Inter norm
-0.937
normalised
Contacts
20
H-bonds 8
Strain ΔE
32.3 kcal/mol
SASA buried
76%
Lipo contact
67% BSA apolar/total
SASA unbound
655 Ų
Apolar buried
335 Ų

Interaction summary

HBD 3 HBA 3 HY 6 PI 2 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 5.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap10Native recall0.83
Jaccard0.45RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

1033 residues
Protein targetT17Atoms15160
Residues1033Chains2
Residue summaryVAL:1536; LEU:1387; LYS:1386; ILE:1064; GLU:900; THR:868; ARG:816; PHE:800; ALA:780; ASN:700; PRO:686; GLY:672; SER:616; TYR:588; ASP:528; MET:408

Receptor context

2 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 2 Excluded HETATM 0
Kept cofactors / ions
A:FAD501 B:FAD501

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
84 1.9283747913911469 -0.937103 -29.9449 8 20 10 0.83 0.00 - no Current
85 1.9638541658565332 -1.04432 -33.1247 10 16 0 0.00 0.00 - no Open
82 2.7477651806865784 -0.704502 -22.1569 6 9 0 0.00 0.00 - no Open
61 2.9989557037730235 -1.02195 -30.4885 6 17 0 0.00 0.00 - no Open
95 3.5606381975773203 -0.992076 -29.9451 7 18 0 0.00 0.00 - no Open
87 3.609197073864286 -0.990527 -28.2491 8 18 0 0.00 0.00 - no Open
50 4.410605974812835 -0.739197 -19.1231 6 15 0 0.00 0.00 - no Open
56 5.214374327704846 -0.914804 -22.8988 10 19 0 0.00 0.00 - no Open
46 5.301391019846421 -1.08605 -29.5892 16 18 0 0.00 0.00 - no Open
67 5.810432988084876 -0.801214 -24.8901 10 12 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 -29.945kcal/mol
Ligand efficiency (LE) -0.9660kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.411
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 434.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) -0.43
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 32.29kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 189.16kcal/mol
Minimised FF energy 156.88kcal/mol

SASA & burial

✓ computed
SASA (unbound) 654.7Ų
Total solvent-accessible surface area of free ligand
BSA total 499.2Ų
Buried surface area upon binding
BSA apolar 334.7Ų
Hydrophobic contacts buried
BSA polar 164.5Ų
Polar contacts buried
Fraction buried 76.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 67.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6478.3Ų
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 8063.1Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 2058.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)