FAIRMol

KB_chagas_79

Pose ID 14343 Compound 4910 Pose 105

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_79

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
40.5 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.76, Jaccard 0.73, H-bond role recall 0.55
Burial
69%
Hydrophobic fit
76%
Reason: no major geometry red flags detected
2 protein-contact clashes 62% of hydrophobic surface is solvent-exposed (15/24 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Daphnia EC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.974 kcal/mol/HA) ✓ Good fit quality (FQ -9.66) ✓ Good H-bonds (5 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ Extreme strain energy (40.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-32.140
kcal/mol
LE
-0.974
kcal/mol/HA
Fit Quality
-9.66
FQ (Leeson)
HAC
33
heavy atoms
MW
469
Da
LogP
2.88
cLogP
Final rank
3.0610
rank score
Inter norm
-0.917
normalised
Contacts
17
H-bonds 10
Strain ΔE
40.5 kcal/mol
SASA buried
69%
Lipo contact
76% BSA apolar/total
SASA unbound
779 Ų
Apolar buried
408 Ų

Interaction summary

HBA 5 HY 2 PI 1 CLASH 2

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 4.

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: 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 overlap16Native recall0.76
Jaccard0.73RMSD-
HB strict7Strict recall0.47
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
154 2.4692201158134006 -0.662223 -23.0841 5 15 0 0.00 0.00 - no Open
105 3.0609594018306705 -0.917072 -32.14 10 17 16 0.76 0.55 - 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 -32.140kcal/mol
Ligand efficiency (LE) -0.9739kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.663
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 468.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.88
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 40.49kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 173.24kcal/mol
Minimised FF energy 132.76kcal/mol

SASA & burial

✓ computed
SASA (unbound) 779.2Ų
Total solvent-accessible surface area of free ligand
BSA total 535.1Ų
Buried surface area upon binding
BSA apolar 408.0Ų
Hydrophobic contacts buried
BSA polar 127.1Ų
Polar contacts buried
Fraction buried 68.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 76.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1426.2Ų
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 1368.5Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 594.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)