FAIRMol

Z18798950

Pose ID 7896 Compound 125 Pose 444

DB fairmolDocking pose analysis is being read from this database.
Compound detail Protein structures Back to compounds
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T12
T. brucei R5P T. brucei
Ligand Z18798950
PDB6FXS↗

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
19.0 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.94, Jaccard 0.88, H-bond role recall 0.60
Burial
68%
Hydrophobic fit
72%
Reason: no major geometry red flags detected
2 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.678 kcal/mol/HA) ✓ Good fit quality (FQ -6.67) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (68% SASA buried) ✓ Lipophilic contacts well-matched (72%) ✗ Moderate strain (19.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-21.686
kcal/mol
LE
-0.678
kcal/mol/HA
Fit Quality
-6.67
FQ (Leeson)
HAC
32
heavy atoms
MW
430
Da
LogP
3.70
cLogP
Final rank
3.1740
rank score
Inter norm
-0.857
normalised
Contacts
16
H-bonds 11
Strain ΔE
19.0 kcal/mol
SASA buried
68%
Lipo contact
72% BSA apolar/total
SASA unbound
709 Ų
Apolar buried
351 Ų

Interaction summary

HBA 10 HY 4 PI 3 CLASH 2

HBD/HBA · H-bonds (geometric)
HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 7.

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: permissive.
Name6FXSContacts16
PoseOpen native poseHB0
IFP residues
ARG140 ARG144 ASN106 HIS105 HIS141 ARG46 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49
Current overlap15Native recall0.94
Jaccard0.88RMSD-
HB strict7Strict recall0.58
HB same residue+role6HB role recall0.60
HB same residue7HB residue recall0.70

Protein summary

302 residues
Protein targetT12Atoms4598
Residues302Chains2
Residue summaryARG:576; ILE:456; VAL:448; GLU:360; ALA:340; LEU:304; TYR:252; HIS:204; PRO:196; THR:196; GLY:182; LYS:176; ASP:168; PHE:160; MET:153; SER:121

Receptor context

1 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 1 Excluded HETATM 0
Kept cofactors / ions
A:CSD72

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
511 1.11515832958189 -0.807666 -26.159 2 17 0 0.00 0.00 - no Open
504 2.2096530715463514 -0.871676 -23.0442 2 16 0 0.00 0.00 - no Open
483 2.2464437038036422 -0.878902 -17.6134 4 16 0 0.00 0.00 - no Open
444 3.173988174285384 -0.857473 -21.6865 11 16 15 0.94 0.60 - 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 -21.686kcal/mol
Ligand efficiency (LE) -0.6777kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.665
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties
Molecular weight 430.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.70
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)
Strain energy (ΔE) 18.95kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 55.96kcal/mol
Minimised FF energy 37.00kcal/mol

SASA & burial

✓ computed
SASA (unbound) 708.9Ų
Total solvent-accessible surface area of free ligand
BSA total 483.5Ų
Buried surface area upon binding
BSA apolar 350.5Ų
Hydrophobic contacts buried
BSA polar 133.0Ų
Polar contacts buried
Fraction buried 68.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 72.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2183.0Ų
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 2454.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 836.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)