FAIRMol

Z56902329

Pose ID 9980 Compound 3363 Pose 494

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T15
T. brucei TR (Dimer cleft site) T. brucei Dimer cleft site
Ligand Z56902329
PDB9IFF

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
47.2 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.62, Jaccard 0.40
Burial
77%
Hydrophobic fit
82%
Reason: strain 47.2 kcal/mol
strain ΔE 47.2 kcal/mol 3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.673 kcal/mol/HA) ✓ Good fit quality (FQ -6.20) ✓ Good H-bonds (3 bonds) ✓ Deep burial (77% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ Extreme strain energy (47.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (6)
Score
-17.501
kcal/mol
LE
-0.673
kcal/mol/HA
Fit Quality
-6.20
FQ (Leeson)
HAC
26
heavy atoms
MW
434
Da
LogP
3.90
cLogP
Final rank
2.0046
rank score
Inter norm
-0.965
normalised
Contacts
15
H-bonds 6
Strain ΔE
47.2 kcal/mol
SASA buried
77%
Lipo contact
82% BSA apolar/total
SASA unbound
645 Ų
Apolar buried
407 Ų

Interaction summary

HBD 3 HY 9 PI 1 CLASH 3

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.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap8Native recall0.62
Jaccard0.40RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

489 residues
Protein targetT15Atoms7420
Residues489Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:264; MET:204

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
348 0.8740691109670798 -0.941479 -19.4368 7 16 0 0.00 - - no Open
399 1.1577229792848076 -0.986813 -19.3868 11 15 0 0.00 - - no Open
362 1.8207036733733963 -1.05976 -19.1339 4 16 0 0.00 - - no Open
494 2.004621134921909 -0.964958 -17.5011 6 15 8 0.62 - - no Current
367 3.0861066535632085 -1.21974 -29.9558 8 15 0 0.00 - - no Open
468 3.394597286173792 -0.938909 -18.0178 4 12 0 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 -17.501kcal/mol
Ligand efficiency (LE) -0.6731kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.202
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 434.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.90
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 47.21kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 118.17kcal/mol
Minimised FF energy 70.96kcal/mol

SASA & burial

✓ computed
SASA (unbound) 645.4Ų
Total solvent-accessible surface area of free ligand
BSA total 498.8Ų
Buried surface area upon binding
BSA apolar 407.3Ų
Hydrophobic contacts buried
BSA polar 91.5Ų
Polar contacts buried
Fraction buried 77.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2997.1Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1513.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)