FAIRMol

Z56849557

Pose ID 14643 Compound 2164 Pose 405

DB SELECTIONDocking 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 Z56849557

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
70.3 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.86, Jaccard 0.75, H-bond role recall 0.45
Burial
74%
Hydrophobic fit
72%
Reason: strain 70.3 kcal/mol
strain ΔE 70.3 kcal/mol 4 protein-contact clashes 4 intramolecular clashes 58% of hydrophobic surface appears solvent-exposed (15/26 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.726 kcal/mol/HA) ✓ Good fit quality (FQ -7.48) ✓ Strong H-bond network (12 bonds) ✓ Deep burial (74% SASA buried) ✓ Lipophilic contacts well-matched (72%) ✗ Extreme strain energy (70.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-27.584
kcal/mol
LE
-0.726
kcal/mol/HA
Fit Quality
-7.48
FQ (Leeson)
HAC
38
heavy atoms
MW
553
Da
LogP
5.30
cLogP
Strain ΔE
70.3 kcal/mol
SASA buried
74%
Lipo contact
72% BSA apolar/total
SASA unbound
819 Ų
Apolar buried
437 Ų

Interaction summary

HB 12 HY 4 PI 1 CLASH 4 ⚠ Exposure 57%

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

⚠️Partial hydrophobic solvent exposure
58% of hydrophobic surface appears solvent-exposed (15/26 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 26 Buried (contacted) 11 Exposed 15 LogP 5.3 H-bonds 12
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
Final rank3.297Score-27.584
Inter norm-0.985Intra norm0.259
Top1000noExcludedno
Contacts21H-bonds12
Artifact reasongeometry warning; 13 clashes; 1 protein clash; high strain Δ 70.2
Residues
ALA158 ALA24 ASN126 ASP129 GLN42 GLU73 GLY23 GLY25 GLY71 LEU130 LEU39 LYS127 LYS159 LYS26 PHE38 SER157 SER22 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 overlap18Native recall0.86
Jaccard0.75RMSD-
HB strict7Strict recall0.47
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
376 2.38538977685145 -0.748088 -29.5979 8 14 0 0.00 0.00 - no Open
410 2.531002620908655 -0.839942 -30.6602 9 15 0 0.00 0.00 - no Open
507 2.6120830374456596 -0.623331 -12.3829 3 18 0 0.00 0.00 - no Open
437 2.794037718136994 -0.604459 -17.8959 3 19 0 0.00 0.00 - no Open
488 2.9134037039057636 -0.631802 -20.1678 2 18 0 0.00 0.00 - no Open
397 3.0484229827099503 -0.655948 -18.9257 3 13 0 0.00 0.00 - no Open
405 3.297389648705711 -0.985362 -27.5835 12 21 18 0.86 0.45 - no Current
412 4.086860697814478 -0.610123 -15.4834 6 14 0 0.00 0.00 - no Open
428 4.3700864456086075 -0.792431 -28.084 9 18 0 0.00 0.00 - no Open
397 4.945488414768248 -0.750799 -21.5195 9 20 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 -27.584kcal/mol
Ligand efficiency (LE) -0.7259kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.483
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 38HA

Physicochemical properties

Molecular weight 552.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.30
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 70.29kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 79.27kcal/mol
Minimised FF energy 8.98kcal/mol

SASA & burial

✓ computed
SASA (unbound) 819.1Ų
Total solvent-accessible surface area of free ligand
BSA total 607.9Ų
Buried surface area upon binding
BSA apolar 437.5Ų
Hydrophobic contacts buried
BSA polar 170.4Ų
Polar contacts buried
Fraction buried 74.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 72.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1432.9Ų
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 556.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)