FAIRMol

KB_Leish_147

Pose ID 14336 Compound 2587 Pose 98

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_Leish_147

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
52.2 kcal/mol
Protein clashes
11
Internal clashes
11
Native overlap
contact recall 0.67, Jaccard 0.52, H-bond role recall 0.36
Burial
84%
Hydrophobic fit
72%
Reason: 11 protein-contact clashes, 11 internal clashes, strain 52.2 kcal/mol
strain ΔE 52.2 kcal/mol 11 protein-contact clashes 11 intramolecular clashes 76% of hydrophobic surface is solvent-exposed (13/17 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. 2 — Toxic (1–10 mg/L)
Daphnia EC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Algae IC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG High Ames Clear DILI Risk
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.906 kcal/mol/HA) ✓ Good fit quality (FQ -8.55) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (84% SASA buried) ✓ Lipophilic contacts well-matched (72%) ✗ Extreme strain energy (52.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (8)
Score
-25.356
kcal/mol
LE
-0.906
kcal/mol/HA
Fit Quality
-8.55
FQ (Leeson)
HAC
28
heavy atoms
MW
483
Da
LogP
4.36
cLogP
Final rank
5.0172
rank score
Inter norm
-1.076
normalised
Contacts
20
H-bonds 10
Strain ΔE
52.2 kcal/mol
SASA buried
84%
Lipo contact
72% BSA apolar/total
SASA unbound
674 Ų
Apolar buried
409 Ų

Interaction summary

HBD 1 HBA 5 HY 3 PI 1 CLASH 11

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 overlap14Native recall0.67
Jaccard0.52RMSD-
HB strict6Strict recall0.40
HB same residue+role4HB role recall0.36
HB same residue4HB residue recall0.36

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
417 1.8491454231609494 -0.823582 -17.3688 4 19 0 0.00 0.00 - no Open
448 2.7888976867680784 -0.921778 -21.9892 8 18 0 0.00 0.00 - no Open
105 2.819988402161028 -0.868298 -22.8791 6 18 0 0.00 0.00 - no Open
98 5.017168025381828 -1.07587 -25.3561 10 20 14 0.67 0.36 - 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 -25.356kcal/mol
Ligand efficiency (LE) -0.9056kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.549
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 483.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.36
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 52.17kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 15.97kcal/mol
Minimised FF energy -36.20kcal/mol

SASA & burial

✓ computed
SASA (unbound) 673.9Ų
Total solvent-accessible surface area of free ligand
BSA total 569.3Ų
Buried surface area upon binding
BSA apolar 409.2Ų
Hydrophobic contacts buried
BSA polar 160.1Ų
Polar contacts buried
Fraction buried 84.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 71.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1324.0Ų
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 502.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)