FAIRMol

Z45874785

Pose ID 10058 Compound 4377 Pose 572

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 Z45874785
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 high Native strong SASA done
Strain ΔE
19.1 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.77, Jaccard 0.53
Burial
69%
Hydrophobic fit
84%
Reason: no major geometry red flags detected
1 protein-contact clashes 65% of hydrophobic surface is solvent-exposed (13/20 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
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>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 ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.834 kcal/mol/HA) ✓ Good fit quality (FQ -7.88) ✓ Good H-bonds (4 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (84%) ✗ Moderate strain (19.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-23.358
kcal/mol
LE
-0.834
kcal/mol/HA
Fit Quality
-7.88
FQ (Leeson)
HAC
28
heavy atoms
MW
420
Da
LogP
2.47
cLogP
Final rank
2.6505
rank score
Inter norm
-0.889
normalised
Contacts
16
H-bonds 4
Strain ΔE
19.1 kcal/mol
SASA buried
69%
Lipo contact
84% BSA apolar/total
SASA unbound
704 Ų
Apolar buried
410 Ų

Interaction summary

HBD 1 HBA 3 HY 7 PI 1 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

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 overlap10Native recall0.77
Jaccard0.53RMSD-
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
572 2.6504523819265104 -0.889235 -23.3579 4 16 10 0.77 - - no Current
534 2.8419011610476597 -1.12169 -31.0192 6 24 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 -23.358kcal/mol
Ligand efficiency (LE) -0.8342kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.875
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 419.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.47
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 19.08kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -27.70kcal/mol
Minimised FF energy -46.78kcal/mol

SASA & burial

✓ computed
SASA (unbound) 703.7Ų
Total solvent-accessible surface area of free ligand
BSA total 486.0Ų
Buried surface area upon binding
BSA apolar 410.0Ų
Hydrophobic contacts buried
BSA polar 76.0Ų
Polar contacts buried
Fraction buried 69.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 84.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3033.3Ų
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 1535.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)