FAIRMol

Z20215696

Pose ID 14641 Compound 899 Pose 403

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 Z20215696

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
37.3 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.76, Jaccard 0.73, H-bond role recall 0.45
Burial
65%
Hydrophobic fit
65%
Reason: no major geometry red flags detected
1 protein-contact clashes 57% of hydrophobic surface appears solvent-exposed (12/21 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.878 kcal/mol/HA) ✓ Good fit quality (FQ -8.63) ✓ Strong H-bond network (12 bonds) ✓ Good burial (65% SASA buried) ✓ Lipophilic contacts well-matched (65%) ✗ Very high strain energy (37.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-28.091
kcal/mol
LE
-0.878
kcal/mol/HA
Fit Quality
-8.63
FQ (Leeson)
HAC
32
heavy atoms
MW
491
Da
LogP
2.90
cLogP
Strain ΔE
37.3 kcal/mol
SASA buried
65%
Lipo contact
65% BSA apolar/total
SASA unbound
733 Ų
Apolar buried
308 Ų

Interaction summary

HB 12 HY 8 PI 0 CLASH 1 ⚠ Exposure 57%

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

⚠️Partial hydrophobic solvent exposure
57% of hydrophobic surface appears solvent-exposed (12/21 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 21 Buried (contacted) 9 Exposed 12 LogP 2.9 H-bonds 12
Exposed fragments: phenyl (4/6 atoms exposed)phenyl (4/5 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (2 atoms exposed)
Final rank5.248Score-28.091
Inter norm-0.984Intra norm0.107
Top1000noExcludedno
Contacts17H-bonds12
Artifact reasongeometry warning; 10 clashes; 4 protein clashes; high strain Δ 37.2
Residues
ALA24 ALA40 ASN41 GLN42 GLU21 GLU73 GLY23 GLY25 LEU130 LEU39 LYS127 LYS26 PHE38 SER22 SER27 SER28 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 overlap16Native recall0.76
Jaccard0.73RMSD-
HB strict6Strict recall0.40
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
388 1.6739574789448688 -0.785498 -20.7679 3 19 0 0.00 0.00 - no Open
470 2.14944625408721 -0.848107 -27.8128 4 19 0 0.00 0.00 - no Open
410 3.2339066525278364 -0.799953 -23.8187 9 14 0 0.00 0.00 - no Open
419 3.676646703013552 -0.584824 -21.5311 5 11 0 0.00 0.00 - no Open
403 5.248144074796463 -0.984439 -28.0906 12 17 16 0.76 0.45 - 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 -28.091kcal/mol
Ligand efficiency (LE) -0.8778kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.633
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 490.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.90
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 37.26kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -113.93kcal/mol
Minimised FF energy -151.19kcal/mol

SASA & burial

✓ computed
SASA (unbound) 733.1Ų
Total solvent-accessible surface area of free ligand
BSA total 475.3Ų
Buried surface area upon binding
BSA apolar 307.7Ų
Hydrophobic contacts buried
BSA polar 167.6Ų
Polar contacts buried
Fraction buried 64.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 64.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1371.2Ų
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 528.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)