FAIRMol

KB_HAT_112

Pose ID 14314 Compound 265 Pose 76

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_HAT_112

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
33.6 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.90, Jaccard 0.66, H-bond role recall 0.45
Burial
90%
Hydrophobic fit
80%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular clashes 68% of hydrophobic surface is solvent-exposed (15/22 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
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>100 mg/L)
Algae IC₅₀
Not classified (>100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.953 kcal/mol/HA) ✓ Good fit quality (FQ -9.53) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (90% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ Very high strain energy (33.6 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-32.386
kcal/mol
LE
-0.953
kcal/mol/HA
Fit Quality
-9.53
FQ (Leeson)
HAC
34
heavy atoms
MW
486
Da
LogP
-0.47
cLogP
Final rank
4.5940
rank score
Inter norm
-1.019
normalised
Contacts
27
H-bonds 11
Strain ΔE
33.6 kcal/mol
SASA buried
90%
Lipo contact
80% BSA apolar/total
SASA unbound
753 Ų
Apolar buried
539 Ų

Interaction summary

HBD 2 HBA 6 HY 3 PI 1 CLASH 6

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 6.

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: permissive.
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
Jaccard0.66RMSD-
HB strict5Strict recall0.33
HB same residue+role5HB role recall0.45
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
118 1.6221210217379594 -0.802718 -20.4321 3 18 0 0.00 0.00 - no Open
128 1.7505082341560974 -0.864138 -28.5222 5 20 0 0.00 0.00 - no Open
87 4.153044674428568 -0.762765 -23.1 9 17 0 0.00 0.00 - no Open
138 4.293758451486025 -0.784325 -20.6052 8 13 0 0.00 0.00 - no Open
76 4.593964288158693 -1.01947 -32.3861 11 27 19 0.90 0.45 - no Current
130 5.298055146730686 -0.689012 -17.2193 9 12 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 -32.386kcal/mol
Ligand efficiency (LE) -0.9525kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.531
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 486.0Da
Lipinski: ≤ 500 Da
LogP (cLogP) -0.47
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 33.61kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 172.23kcal/mol
Minimised FF energy 138.61kcal/mol

SASA & burial

✓ computed
SASA (unbound) 752.8Ų
Total solvent-accessible surface area of free ligand
BSA total 675.8Ų
Buried surface area upon binding
BSA apolar 538.6Ų
Hydrophobic contacts buried
BSA polar 137.2Ų
Polar contacts buried
Fraction buried 89.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1465.8Ų
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 499.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)