FAIRMol

Z1521553711

Pose ID 9989 Compound 4156 Pose 503

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 Z1521553711
PDB9IFF

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising and worth follow-up
Binding strong Geometry medium Native mixed SASA done
Strain ΔE
13.1 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.46, Jaccard 0.33
Burial
68%
Hydrophobic fit
76%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.000 kcal/mol/HA) ✓ Good fit quality (FQ -8.53) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (68% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ Moderate strain (13.1 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-21.000
kcal/mol
LE
-1.000
kcal/mol/HA
Fit Quality
-8.53
FQ (Leeson)
HAC
21
heavy atoms
MW
306
Da
LogP
2.73
cLogP
Strain ΔE
13.1 kcal/mol
SASA buried
68%
Lipo contact
76% BSA apolar/total
SASA unbound
507 Ų
Apolar buried
265 Ų

Interaction summary

HB 6 HY 24 PI 0 CLASH 4
Final rank3.929Score-21.000
Inter norm-1.149Intra norm0.149
Top1000noExcludedno
Contacts11H-bonds6
Artifact reasongeometry warning; 9 clashes; 3 protein clashes
Residues
ALA90 GLY214 GLY215 LYS211 LYS89 PRO187 PRO212 PRO213 TRP92 TYR210 VAL88

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

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 overlap6Native recall0.46
Jaccard0.33RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
407 2.7701591179867786 -1.0811 -20.1761 6 10 0 0.00 - - no Open
503 3.928925091213071 -1.1487 -21.0002 6 11 6 0.46 - - 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 -21.000kcal/mol
Ligand efficiency (LE) -1.0000kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.530
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 21HA

Physicochemical properties

Molecular weight 305.8Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.73
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 13.12kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 99.29kcal/mol
Minimised FF energy 86.17kcal/mol

SASA & burial

✓ computed
SASA (unbound) 507.3Ų
Total solvent-accessible surface area of free ligand
BSA total 346.4Ų
Buried surface area upon binding
BSA apolar 264.9Ų
Hydrophobic contacts buried
BSA polar 81.5Ų
Polar contacts buried
Fraction buried 68.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 76.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2859.4Ų
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 1560.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)