FAIRMol

Z44831334

Pose ID 14803 Compound 2913 Pose 565

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 Z44831334

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
40.8 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.86, Jaccard 0.64, H-bond role recall 0.64
Burial
91%
Hydrophobic fit
77%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes 43% of hydrophobic surface appears solvent-exposed (9/21 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 (-1.174 kcal/mol/HA) ✓ Good fit quality (FQ -11.08) ✓ Strong H-bond network (14 bonds) ✓ Deep burial (91% SASA buried) ✓ Lipophilic contacts well-matched (77%) ✗ Extreme strain energy (40.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-32.861
kcal/mol
LE
-1.174
kcal/mol/HA
Fit Quality
-11.08
FQ (Leeson)
HAC
28
heavy atoms
MW
374
Da
LogP
3.88
cLogP
Strain ΔE
40.8 kcal/mol
SASA buried
91%
Lipo contact
77% BSA apolar/total
SASA unbound
642 Ų
Apolar buried
450 Ų

Interaction summary

HB 14 HY 5 PI 1 CLASH 4 ⚠ Exposure 42%

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
43% of hydrophobic surface appears solvent-exposed (9/21 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 21 Buried (contacted) 12 Exposed 9 LogP 3.88 H-bonds 14
Exposed fragments: phenyl (6/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
Final rank3.919Score-32.861
Inter norm-1.309Intra norm0.135
Top1000noExcludedno
Contacts25H-bonds14
Artifact reasongeometry warning; 11 clashes; 2 protein clashes; high strain Δ 40.4
Residues
ALA158 ALA24 ALA40 ALA70 ASN126 ASN41 ASP68 GLN42 GLU73 GLY23 GLY25 GLY47 GLY71 LEU39 LYS127 LYS159 LYS26 PHE38 SER157 SER22 SER27 SER28 THR44 THR45 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
Jaccard0.64RMSD-
HB strict7Strict recall0.47
HB same residue+role7HB role recall0.64
HB same residue7HB residue recall0.64

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
552 1.4674467189468063 -0.951939 -21.2275 6 17 0 0.00 0.00 - no Open
551 2.058397956551504 -1.26163 -35.075 9 17 0 0.00 0.00 - no Open
542 2.5265455231135476 -1.2438 -41.7041 5 16 0 0.00 0.00 - no Open
576 3.869636448834477 -0.950247 -23.3779 10 16 0 0.00 0.00 - no Open
565 3.9192596699025195 -1.30875 -32.8613 14 25 18 0.86 0.64 - no Current
546 4.121821341473989 -1.11086 -28.1942 10 18 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 -32.861kcal/mol
Ligand efficiency (LE) -1.1736kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.079
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 374.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.88
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 40.77kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 157.60kcal/mol
Minimised FF energy 116.83kcal/mol

SASA & burial

✓ computed
SASA (unbound) 641.8Ų
Total solvent-accessible surface area of free ligand
BSA total 584.9Ų
Buried surface area upon binding
BSA apolar 450.2Ų
Hydrophobic contacts buried
BSA polar 134.7Ų
Polar contacts buried
Fraction buried 91.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 77.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1368.2Ų
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 503.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)