FAIRMol

KB_chagas_146

Pose ID 14351 Compound 298 Pose 113

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T22
L. donovani rab5a L. donovani
Ligand KB_chagas_146

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 medium Native strong SASA done
Strain ΔE
35.3 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.90, Jaccard 0.76, H-bond role recall 0.55
Burial
87%
Hydrophobic fit
81%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.856 kcal/mol/HA) ✓ Good fit quality (FQ -8.34) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (87% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ Very high strain energy (35.3 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (7)
Score
-26.546
kcal/mol
LE
-0.856
kcal/mol/HA
Fit Quality
-8.34
FQ (Leeson)
HAC
31
heavy atoms
MW
459
Da
LogP
2.86
cLogP
Strain ΔE
35.3 kcal/mol
SASA buried
87%
Lipo contact
81% BSA apolar/total
SASA unbound
721 Ų
Apolar buried
509 Ų

Interaction summary

HB 10 HY 12 PI 1 CLASH 4

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 rank4.061Score-26.546
Inter norm-1.039Intra norm0.183
Top1000noExcludedno
Contacts23H-bonds10
Artifact reasongeometry warning; 7 clashes; 3 protein clashes; high strain Δ 35.3
Residues
ALA158 ALA24 ALA40 ASN126 ASN41 ASP129 ASP68 GLN42 GLU73 GLY23 GLY25 GLY71 LEU130 LEU39 LYS127 LYS159 LYS26 PHE38 SER157 SER27 SER28 THR44 THR69

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
NameRAB5AContacts21
PoseOpen native poseHB0
IFP residues
ALA158 ALA24 ALA40 ASN126 ASN41 ASP129 GLN42 GLU21 GLU73 GLY23 GLY25 LEU130 LEU39 LYS127 LYS159 LYS26 PHE38 SER157 SER22 SER27 SER28
Current overlap19Native recall0.90
Jaccard0.76RMSD-
HB strict8Strict recall0.53
HB same residue+role6HB role recall0.55
HB same residue6HB residue recall0.55

Protein summary

165 residues
Protein targetT22Atoms2561
Residues165Chains1
Residue summaryLEU:363; LYS:242; ALA:231; ARG:214; ILE:190; GLU:180; VAL:144; SER:143; PHE:140; ASN:112; THR:112; TYR:105; GLN:102; ASP:96; GLY:77; TRP:48

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
183 1.8967482424734206 -0.871784 -21.4866 2 21 0 0.00 0.00 - no Open
141 2.066095302338495 -0.844926 -26.1595 4 17 0 0.00 0.00 - no Open
132 3.370144819325612 -0.749402 -24.0358 5 14 0 0.00 0.00 - no Open
113 4.060504241383809 -1.03916 -26.5464 10 23 19 0.90 0.55 - no Current
112 5.20526856742621 -0.917573 -24.3651 9 22 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 -26.546kcal/mol
Ligand efficiency (LE) -0.8563kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.343
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 458.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.86
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 35.27kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -11.21kcal/mol
Minimised FF energy -46.48kcal/mol

SASA & burial

✓ computed
SASA (unbound) 721.1Ų
Total solvent-accessible surface area of free ligand
BSA total 628.6Ų
Buried surface area upon binding
BSA apolar 508.5Ų
Hydrophobic contacts buried
BSA polar 120.1Ų
Polar contacts buried
Fraction buried 87.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1457.6Ų
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 1368.5Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 510.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)