FAIRMol

KB_HAT_92

Pose ID 13643 Compound 426 Pose 85

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T21
T. cruzi R5P T. cruzi
Ligand KB_HAT_92
PDB3K7O

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
34.3 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.93, Jaccard 0.72, H-bond role recall 0.22
Burial
77%
Hydrophobic fit
81%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.663 kcal/mol/HA) ✓ Good fit quality (FQ -6.58) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (77% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ Very high strain energy (34.3 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (8) ✗ Many internal clashes (17)
Score
-21.867
kcal/mol
LE
-0.663
kcal/mol/HA
Fit Quality
-6.58
FQ (Leeson)
HAC
33
heavy atoms
MW
468
Da
LogP
4.19
cLogP
Strain ΔE
34.3 kcal/mol
SASA buried
77%
Lipo contact
81% BSA apolar/total
SASA unbound
684 Ų
Apolar buried
423 Ų

Interaction summary

HB 7 HY 8 PI 2 CLASH 4
Final rank2.464Score-21.867
Inter norm-0.731Intra norm0.068
Top1000noExcludedno
Contacts17H-bonds7
Artifact reasongeometry warning; 17 clashes; 8 protein contact clashes; high strain Δ 34.3
Residues
ARG137 ARG141 ASN103 HIS102 MET98 TYR94 ARG113 ASP10 CYS69 GLY70 GLY72 GLY74 HIS11 ILE73 PRO12 SER71 TYR46

Protein summary

305 residues
Protein targetT21Atoms4646
Residues305Chains2
Residue summaryARG:576; ILE:532; VAL:512; GLU:420; ALA:360; PHE:240; HIS:238; LYS:220; THR:210; LEU:190; PRO:168; TYR:168; GLY:154; SER:154; ASP:144; ASN:112

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name3K7OContacts14
PoseOpen native poseHB0
IFP residues
ARG137 ARG141 ASN103 HIS102 HIS138 ASP10 CYS69 GLY70 GLY74 HIS11 ILE73 PRO12 SER71 TYR46
Current overlap13Native recall0.93
Jaccard0.72RMSD-
HB strict3Strict recall0.25
HB same residue+role2HB role recall0.22
HB same residue2HB residue recall0.25

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
126 2.4610935185719067 -0.859196 -24.2148 4 16 0 0.00 0.00 - no Open
85 2.463854364308486 -0.730726 -21.8669 7 17 13 0.93 0.22 - no Current
100 3.9599777359672808 -0.773922 -24.882 4 14 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 -21.867kcal/mol
Ligand efficiency (LE) -0.6626kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.575
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 467.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.19
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 34.26kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -4.15kcal/mol
Minimised FF energy -38.41kcal/mol

SASA & burial

✓ computed
SASA (unbound) 683.8Ų
Total solvent-accessible surface area of free ligand
BSA total 524.2Ų
Buried surface area upon binding
BSA apolar 423.2Ų
Hydrophobic contacts buried
BSA polar 101.0Ų
Polar contacts buried
Fraction buried 76.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2304.3Ų
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 2482.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 747.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)