FAIRMol

OSA_Lib_302

Pose ID 4928 Compound 3152 Pose 187

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 OSA_Lib_302
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
22.8 kcal/mol
Protein clashes
5
Internal clashes
7
Native overlap
contact recall 0.79, Jaccard 0.65, H-bond role recall 0.00
Burial
96%
Hydrophobic fit
96%
Reason: 7 internal clashes
5 protein-contact clashes 7 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.872 kcal/mol/HA) ✓ Good fit quality (FQ -8.41) ✓ Deep burial (96% SASA buried) ✓ Lipophilic contacts well-matched (96%) ✗ High strain energy (22.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (17)
Score
-26.152
kcal/mol
LE
-0.872
kcal/mol/HA
Fit Quality
-8.41
FQ (Leeson)
HAC
30
heavy atoms
MW
399
Da
LogP
3.81
cLogP
Strain ΔE
22.8 kcal/mol
SASA buried
96%
Lipo contact
96% BSA apolar/total
SASA unbound
675 Ų
Apolar buried
619 Ų

Interaction summary

HB 2 HY 24 PI 5 CLASH 7

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 rank3.079Score-26.152
Inter norm-1.073Intra norm0.201
Top1000noExcludedno
Contacts19H-bonds2
Artifact reasongeometry warning; 17 clashes; 1 protein clash; 2 cofactor-context clashes; moderate strain Δ 22.8
Residues
ARG14 ASN175 ASP161 CYS168 GLY205 LEU208 LEU209 MET163 MET213 NAP301 PHE171 PHE97 PRO167 PRO210 SER207 TRP221 TYR174 VAL164 VAL206

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 overlap15Native recall0.79
Jaccard0.65RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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
187 3.078621102331867 -1.07291 -26.1517 2 19 15 0.79 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 -26.152kcal/mol
Ligand efficiency (LE) -0.8717kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.409
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 398.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.81
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 22.82kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 119.45kcal/mol
Minimised FF energy 96.63kcal/mol

SASA & burial

✓ computed
SASA (unbound) 675.2Ų
Total solvent-accessible surface area of free ligand
BSA total 644.7Ų
Buried surface area upon binding
BSA apolar 619.3Ų
Hydrophobic contacts buried
BSA polar 25.4Ų
Polar contacts buried
Fraction buried 95.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 96.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1787.7Ų
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 914.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)