FAIRMol

KB_chagas_214

Pose ID 7572 Compound 3515 Pose 120

DB fairmolDocking 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 KB_chagas_214
PDB6FXS

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
15.2 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.88, Jaccard 0.78, H-bond role recall 0.50
Burial
71%
Hydrophobic fit
77%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.934 kcal/mol/HA) ✓ Good fit quality (FQ -9.02) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (71% SASA buried) ✓ Lipophilic contacts well-matched (77%) ✗ Moderate strain (15.2 kcal/mol) ✗ Geometry warnings ✗ Severe protein-contact clashes (12) ✗ Internal clashes (9)
Score
-28.036
kcal/mol
LE
-0.934
kcal/mol/HA
Fit Quality
-9.02
FQ (Leeson)
HAC
30
heavy atoms
MW
414
Da
LogP
2.98
cLogP
Strain ΔE
15.2 kcal/mol
SASA buried
71%
Lipo contact
77% BSA apolar/total
SASA unbound
682 Ų
Apolar buried
374 Ų

Interaction summary

HB 10 HY 10 PI 3 CLASH 6

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

Final rank1.997Score-28.036
Inter norm-0.965Intra norm0.030
Top1000noExcludedno
Contacts16H-bonds10
Artifact reasongeometry warning; 9 clashes; 12 protein contact clashes
Residues
ARG140 ARG144 ASN106 HIS105 HIS141 MET101 ARG46 CYS72 GLY73 GLY77 HIS14 ILE15 ILE76 MET78 SER74 TYR49

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 overlap14Native recall0.88
Jaccard0.78RMSD-
HB strict7Strict recall0.58
HB same residue+role5HB role recall0.50
HB same residue6HB residue recall0.60

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
120 1.9965885174098903 -0.964661 -28.0363 10 16 14 0.88 0.50 - no Current
98 4.041781479751878 -0.804942 -23.3835 11 16 5 0.31 0.20 - 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 -28.036kcal/mol
Ligand efficiency (LE) -0.9345kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.015
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 414.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.98
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 15.24kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 79.08kcal/mol
Minimised FF energy 63.84kcal/mol

SASA & burial

✓ computed
SASA (unbound) 681.8Ų
Total solvent-accessible surface area of free ligand
BSA total 485.6Ų
Buried surface area upon binding
BSA apolar 373.7Ų
Hydrophobic contacts buried
BSA polar 111.9Ų
Polar contacts buried
Fraction buried 71.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 77.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2146.2Ų
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 869.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)