FAIRMol

OHD_TB2019_4

Pose ID 10892 Compound 2985 Pose 49

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_TB2019_4
PDB5S9T

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 strong SASA done
Strain ΔE
30.9 kcal/mol
Protein clashes
5
Internal clashes
5
Native overlap
contact recall 0.92, Jaccard 0.58, H-bond role recall 0.00
Burial
76%
Hydrophobic fit
92%
Reason: no major geometry red flags detected
5 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.606 kcal/mol/HA) ✓ Good fit quality (FQ -6.11) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (92%) ✗ Very high strain energy (30.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-21.198
kcal/mol
LE
-0.606
kcal/mol/HA
Fit Quality
-6.11
FQ (Leeson)
HAC
35
heavy atoms
MW
538
Da
LogP
1.68
cLogP
Final rank
2.9242
rank score
Inter norm
-0.675
normalised
Contacts
18
H-bonds 2
Strain ΔE
30.9 kcal/mol
SASA buried
76%
Lipo contact
92% BSA apolar/total
SASA unbound
790 Ų
Apolar buried
552 Ų

Interaction summary

HBD 2 HY 8 PI 2 CLASH 5

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

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 overlap11Native recall0.92
Jaccard0.58RMSD-
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
51 0.39698825501507146 -1.04795 -35.5083 2 18 0 0.00 0.00 - no Open
45 1.3780897122946856 -0.598854 -19.9579 3 14 0 0.00 0.00 - no Open
49 2.9242297137967 -0.675491 -21.1975 2 18 11 0.92 0.00 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -21.198kcal/mol
Ligand efficiency (LE) -0.6056kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.109
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 35HA

Physicochemical properties

Molecular weight 538.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.68
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 30.88kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 305.93kcal/mol
Minimised FF energy 275.05kcal/mol

SASA & burial

✓ computed
SASA (unbound) 790.0Ų
Total solvent-accessible surface area of free ligand
BSA total 600.5Ų
Buried surface area upon binding
BSA apolar 551.6Ų
Hydrophobic contacts buried
BSA polar 48.9Ų
Polar contacts buried
Fraction buried 76.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 91.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6670.6Ų
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 2128.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)