FAIRMol

Z49549408

Pose ID 9978 Compound 1394 Pose 492

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 Z49549408
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 high Native mixed SASA done
Strain ΔE
15.8 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.54, Jaccard 0.35
Burial
84%
Hydrophobic fit
84%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.110 kcal/mol/HA) ✓ Good fit quality (FQ -9.10) ✓ Good H-bonds (5 bonds) ✓ Deep burial (84% SASA buried) ✓ Lipophilic contacts well-matched (84%) ✗ Moderate strain (15.8 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (8)
Score
-21.093
kcal/mol
LE
-1.110
kcal/mol/HA
Fit Quality
-9.10
FQ (Leeson)
HAC
19
heavy atoms
MW
279
Da
LogP
2.90
cLogP
Strain ΔE
15.8 kcal/mol
SASA buried
84%
Lipo contact
84% BSA apolar/total
SASA unbound
486 Ų
Apolar buried
343 Ų

Interaction summary

HB 5 HY 24 PI 1 CLASH 1
Final rank2.149Score-21.093
Inter norm-1.238Intra norm0.127
Top1000noExcludedno
Contacts14H-bonds5
Artifact reasongeometry warning; 8 clashes; 2 protein clashes
Residues
ALA209 ALA67 ALA90 GLN68 GLY66 LEU73 LYS211 LYS89 MET70 PRO212 PRO213 TYR210 TYR69 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 overlap7Native recall0.54
Jaccard0.35RMSD-
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

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
380 1.2157029303091844 -1.31937 -22.3757 8 12 0 0.00 - - no Open
365 2.03476027107978 -1.69221 -27.2831 9 18 0 0.00 - - no Open
492 2.149058578081181 -1.23753 -21.0928 5 14 7 0.54 - - no Current
344 2.4482415740067793 -1.45975 -25.5076 10 13 0 0.00 - - no Open
368 2.7696457872585443 -1.25917 -21.824 6 11 0 0.00 - - no Open
377 3.074515803373726 -1.38191 -21.767 5 13 0 0.00 - - no Open
414 3.32166662867758 -1.46812 -21.6428 9 10 0 0.00 - - no Open
395 3.6859088691304858 -1.28583 -23.0255 8 14 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 -21.093kcal/mol
Ligand efficiency (LE) -1.1101kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.100
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 19HA

Physicochemical properties

Molecular weight 278.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.90
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 15.85kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 90.98kcal/mol
Minimised FF energy 75.13kcal/mol

SASA & burial

✓ computed
SASA (unbound) 486.2Ų
Total solvent-accessible surface area of free ligand
BSA total 409.5Ų
Buried surface area upon binding
BSA apolar 343.4Ų
Hydrophobic contacts buried
BSA polar 66.2Ų
Polar contacts buried
Fraction buried 84.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 83.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2880.3Ų
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 1522.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)