FAIRMol

OHD_TbNat_65

Pose ID 4824 Compound 2912 Pose 83

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_TbNat_65
PDB6RX6

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
30.6 kcal/mol
Protein clashes
1
Internal clashes
4
Native overlap
contact recall 0.42, Jaccard 0.36, H-bond role recall 0.80
Burial
84%
Hydrophobic fit
59%
Reason: no major geometry red flags detected
1 protein-contact clashes 4 intramolecular clashes 56% of hydrophobic surface appears solvent-exposed (10/18 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.112 kcal/mol/HA) ✓ Good fit quality (FQ -10.25) ✓ Strong H-bond network (14 bonds) ✓ Deep burial (84% SASA buried) ✗ Very high strain energy (30.6 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (7)
Score
-28.913
kcal/mol
LE
-1.112
kcal/mol/HA
Fit Quality
-10.25
FQ (Leeson)
HAC
26
heavy atoms
MW
360
Da
LogP
1.76
cLogP
Strain ΔE
30.6 kcal/mol
SASA buried
84%
Lipo contact
59% BSA apolar/total
SASA unbound
576 Ų
Apolar buried
286 Ų

Interaction summary

HB 14 HY 8 PI 1 CLASH 4 ⚠ Exposure 55%

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

⚠️Partial hydrophobic solvent exposure
56% of hydrophobic surface appears solvent-exposed (10/18 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 18 Buried (contacted) 8 Exposed 10 LogP 1.76 H-bonds 14
Exposed fragments: phenyl (6/6 atoms exposed)aliphatic chain/group (4 atoms exposed)
Final rank1.726Score-28.913
Inter norm-1.255Intra norm0.143
Top1000noExcludedno
Contacts11H-bonds14
Artifact reasongeometry warning; 7 clashes; 1 protein clash; 1 severe cofactor-context clash; high strain Δ 30.6
Residues
ALA96 ARG14 ASP161 LYS13 LYS178 NAP301 PHE97 PRO210 SER95 TYR174 VAL211

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
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 overlap8Native recall0.42
Jaccard0.36RMSD-
HB strict3Strict recall0.50
HB same residue+role4HB role recall0.80
HB same residue4HB residue recall0.80

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
83 1.726165603324366 -1.25521 -28.9129 14 11 8 0.42 0.80 - no Current
72 2.5159025534805233 -1.29084 -32.7784 8 20 15 0.79 0.40 - no Open
47 3.0866835948633713 -1.21083 -30.5389 12 15 0 0.00 0.00 - no Open
30 4.249683644980609 -0.998616 -15.5397 12 15 0 0.00 0.00 - no Open
65 4.3394777699327225 -1.03572 -23.6814 9 19 0 0.00 0.00 - no Open
79 4.411040433023151 -0.928097 -19.2409 8 16 0 0.00 0.00 - no Open
82 4.435254214047893 -0.905021 -18.9062 11 13 0 0.00 0.00 - no Open
50 5.831249337352885 -0.940251 -16.3801 15 16 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 -28.913kcal/mol
Ligand efficiency (LE) -1.1120kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.246
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 360.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.76
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 30.58kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 68.86kcal/mol
Minimised FF energy 38.28kcal/mol

SASA & burial

✓ computed
SASA (unbound) 576.4Ų
Total solvent-accessible surface area of free ligand
BSA total 485.6Ų
Buried surface area upon binding
BSA apolar 286.1Ų
Hydrophobic contacts buried
BSA polar 199.4Ų
Polar contacts buried
Fraction buried 84.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 58.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1459.9Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 960.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)