FAIRMol

Z1589255958

Pose ID 9976 Compound 4489 Pose 490

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 Z1589255958
PDB9IFF

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
30.8 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.62, Jaccard 0.47
Burial
60%
Hydrophobic fit
66%
Reason: no major geometry red flags detected
1 protein-contact clashes 58% of hydrophobic surface appears solvent-exposed (7/12 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>100 mg/L)
Algae IC₅₀
Not classified (>100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.020 kcal/mol/HA) ✓ Good fit quality (FQ -9.00) ✓ Strong H-bond network (9 bonds) ✓ Good burial (60% SASA buried) ✓ Lipophilic contacts well-matched (66%) ✗ Very high strain energy (30.8 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (7)
Score
-23.448
kcal/mol
LE
-1.020
kcal/mol/HA
Fit Quality
-9.00
FQ (Leeson)
HAC
23
heavy atoms
MW
342
Da
LogP
-5.40
cLogP
Final rank
4.5862
rank score
Inter norm
-1.042
normalised
Contacts
12
H-bonds 12
Strain ΔE
30.8 kcal/mol
SASA buried
60%
Lipo contact
66% BSA apolar/total
SASA unbound
503 Ų
Apolar buried
199 Ų

Interaction summary

HBD 5 HBA 4 HY 2 PI 0 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 6.

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 overlap8Native recall0.62
Jaccard0.47RMSD-
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
387 2.4158515607577207 -1.15376 -27.6144 16 17 0 0.00 - - no Open
490 4.586236351164485 -1.04163 -23.4479 12 12 8 0.62 - - 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 -23.448kcal/mol
Ligand efficiency (LE) -1.0195kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.998
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 342.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) -5.40
Lipinski: ≤ 5
Rotatable bonds 13

Conformational strain (MMFF94s)

Strain energy (ΔE) 30.79kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 211.21kcal/mol
Minimised FF energy 180.42kcal/mol

SASA & burial

✓ computed
SASA (unbound) 502.8Ų
Total solvent-accessible surface area of free ligand
BSA total 303.7Ų
Buried surface area upon binding
BSA apolar 198.9Ų
Hydrophobic contacts buried
BSA polar 104.8Ų
Polar contacts buried
Fraction buried 60.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 65.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2821.8Ų
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 1508.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)