FAIRMol

Z1939360435

Pose ID 7858 Compound 627 Pose 406

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T12
T. brucei R5P T. brucei
Ligand Z1939360435
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
29.1 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.81, Jaccard 0.68, H-bond role recall 0.50
Burial
76%
Hydrophobic fit
75%
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 (-0.787 kcal/mol/HA) ✓ Good fit quality (FQ -7.59) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (75%) ✗ High strain energy (29.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (15)
Score
-23.612
kcal/mol
LE
-0.787
kcal/mol/HA
Fit Quality
-7.59
FQ (Leeson)
HAC
30
heavy atoms
MW
422
Da
LogP
3.37
cLogP
Strain ΔE
29.1 kcal/mol
SASA buried
76%
Lipo contact
75% BSA apolar/total
SASA unbound
646 Ų
Apolar buried
365 Ų

Interaction summary

HB 10 HY 8 PI 1 CLASH 2
Final rank3.011Score-23.612
Inter norm-0.913Intra norm0.125
Top1000noExcludedno
Contacts16H-bonds10
Artifact reasongeometry warning; 15 clashes; 1 protein clash; moderate strain Δ 29.1
Residues
ARG140 ARG144 ASN106 HIS105 HIS141 MET101 TYR97 ARG116 ARG46 CYS72 GLY73 GLY77 HIS14 ILE15 SER74 TYR49

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

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6FXSContacts16
PoseOpen native poseHB0
IFP residues
ARG140 ARG144 ASN106 HIS105 HIS141 ARG46 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49
Current overlap13Native recall0.81
Jaccard0.68RMSD-
HB strict7Strict recall0.58
HB same residue+role5HB role recall0.50
HB same residue6HB residue recall0.60

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
401 1.3317583642642152 -1.04731 -26.642 8 18 0 0.00 0.00 - no Open
432 1.6486052609835815 -0.867169 -23.2983 5 19 0 0.00 0.00 - no Open
406 3.0108297546293987 -0.912563 -23.612 10 16 13 0.81 0.50 - no Current
426 4.039179568641927 -1.12108 -30.4478 6 20 0 0.00 0.00 - no Open
490 4.085038280417157 -0.853857 -20.5979 3 18 0 0.00 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 -23.612kcal/mol
Ligand efficiency (LE) -0.7871kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.592
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 422.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.37
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.07kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 29.09kcal/mol
Minimised FF energy 0.03kcal/mol

SASA & burial

✓ computed
SASA (unbound) 646.2Ų
Total solvent-accessible surface area of free ligand
BSA total 489.6Ų
Buried surface area upon binding
BSA apolar 365.4Ų
Hydrophobic contacts buried
BSA polar 124.3Ų
Polar contacts buried
Fraction buried 75.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 74.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2180.6Ų
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 774.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)