FAIRMol

OHD_TB2021_36

Pose ID 4804 Compound 1141 Pose 63

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T08
T. brucei PTR1 T. brucei
Ligand OHD_TB2021_36
PDB6RX6

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
51.2 kcal/mol
Protein clashes
3
Internal clashes
6
Native overlap
contact recall 0.63, Jaccard 0.50, H-bond role recall 0.40
Burial
99%
Hydrophobic fit
65%
Reason: 6 internal clashes, strain 51.2 kcal/mol
strain ΔE 51.2 kcal/mol 3 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.459 kcal/mol/HA) ✓ Good fit quality (FQ -12.88) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (99% SASA buried) ✓ Lipophilic contacts well-matched (65%) ✗ Extreme strain energy (51.2 kcal/mol) ✗ Geometry warnings
Score
-33.555
kcal/mol
LE
-1.459
kcal/mol/HA
Fit Quality
-12.88
FQ (Leeson)
HAC
23
heavy atoms
MW
347
Da
LogP
-0.54
cLogP
Final rank
1.3904
rank score
Inter norm
-1.478
normalised
Contacts
17
H-bonds 16
Strain ΔE
51.2 kcal/mol
SASA buried
99%
Lipo contact
65% BSA apolar/total
SASA unbound
589 Ų
Apolar buried
382 Ų

Interaction summary

HBD 4 HBA 3 HY 5 PI 2 CLASH 6

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 4.

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: permissive.
NameTbPTR1_cW_6RX6_ReadyContacts19
PoseOpen native poseHB0
IFP residues
ARG14 ASP161 CYS168 GLY205 LEU208 LEU209 LYS178 MET213 NAP301 PHE171 PHE97 PRO210 PRO99 SER207 SER95 TRP221 TYR174 TYR98 VAL206
Current overlap12Native recall0.63
Jaccard0.50RMSD-
HB strict3Strict recall0.50
HB same residue+role2HB role recall0.40
HB same residue3HB residue recall0.60

Protein summary

258 residues
Protein targetT08Atoms3881
Residues258Chains2
Residue summaryLEU:437; VAL:433; ALA:361; ARG:288; ILE:266; GLU:210; LYS:198; SER:198; ASN:182; THR:154; GLN:153; PHE:140; PRO:140; TYR:126; GLY:112; HIS:103

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:NAP301

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
52 0.39888311726196213 -1.49478 -32.7747 11 17 12 0.63 0.60 - no Open
63 1.390351737555636 -1.47841 -33.555 16 17 12 0.63 0.40 - no Current
64 1.5404708740171311 -1.28844 -24.3069 11 18 0 0.00 0.00 - no Open
55 1.8635607182521439 -1.02657 -20.4374 5 17 0 0.00 0.00 - no Open
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 -33.555kcal/mol
Ligand efficiency (LE) -1.4589kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -12.876
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) 51.16kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 80.06kcal/mol
Minimised FF energy 28.91kcal/mol

SASA & burial

✓ computed
SASA (unbound) 589.4Ų
Total solvent-accessible surface area of free ligand
BSA total 583.7Ų
Buried surface area upon binding
BSA apolar 381.7Ų
Hydrophobic contacts buried
BSA polar 201.9Ų
Polar contacts buried
Fraction buried 99.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 65.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1519.6Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 918.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)