FAIRMol

Z56911531

Pose ID 10014 Compound 1028 Pose 528

DB fairmolDocking 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 Z56911531
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
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
39.3 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.69, Jaccard 0.56
Burial
69%
Hydrophobic fit
64%
Reason: no major geometry red flags detected
1 protein-contact clashes 60% of hydrophobic surface is solvent-exposed (9/15 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Daphnia EC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.879 kcal/mol/HA) ✓ Good fit quality (FQ -7.75) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (64%) ✗ Very high strain energy (39.3 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (8) ✗ Internal clashes (6)
Score
-20.211
kcal/mol
LE
-0.879
kcal/mol/HA
Fit Quality
-7.75
FQ (Leeson)
HAC
23
heavy atoms
MW
347
Da
LogP
2.81
cLogP
Final rank
1.0580
rank score
Inter norm
-1.040
normalised
Contacts
12
H-bonds 7
Strain ΔE
39.3 kcal/mol
SASA buried
69%
Lipo contact
64% BSA apolar/total
SASA unbound
539 Ų
Apolar buried
238 Ų

Interaction summary

HBD 3 HBA 3 HY 3 PI 0 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 4.

PI · π–π interactions

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

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 overlap9Native recall0.69
Jaccard0.56RMSD-
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
528 1.0580254495320864 -1.04038 -20.2108 7 12 9 0.69 - - no Current
433 3.0456103007952593 -1.1748 -18.7928 11 19 0 0.00 - - no Open
495 3.8496145283112764 -1.32078 -28.2185 4 17 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 -20.211kcal/mol
Ligand efficiency (LE) -0.8787kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.755
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 347.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.81
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 39.29kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 99.94kcal/mol
Minimised FF energy 60.65kcal/mol

SASA & burial

✓ computed
SASA (unbound) 538.5Ų
Total solvent-accessible surface area of free ligand
BSA total 369.5Ų
Buried surface area upon binding
BSA apolar 237.6Ų
Hydrophobic contacts buried
BSA polar 131.9Ų
Polar contacts buried
Fraction buried 68.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 64.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2806.0Ų
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 1546.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)