FAIRMol

Z49558975

Pose ID 8091 Compound 1455 Pose 639

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T12
T. brucei R5P T. brucei
Ligand Z49558975
PDB6FXS

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
48.3 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.94, Jaccard 0.79, H-bond role recall 0.80
Burial
80%
Hydrophobic fit
73%
Reason: strain 48.3 kcal/mol
strain ΔE 48.3 kcal/mol 1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.141 kcal/mol/HA) ✓ Good fit quality (FQ -10.52) ✓ Strong H-bond network (13 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (73%) ✗ Extreme strain energy (48.3 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (6)
Score
-29.672
kcal/mol
LE
-1.141
kcal/mol/HA
Fit Quality
-10.52
FQ (Leeson)
HAC
26
heavy atoms
MW
354
Da
LogP
2.82
cLogP
Strain ΔE
48.3 kcal/mol
SASA buried
80%
Lipo contact
73% BSA apolar/total
SASA unbound
629 Ų
Apolar buried
367 Ų

Interaction summary

HB 13 HY 10 PI 4 CLASH 1
Final rank3.297Score-29.672
Inter norm-1.297Intra norm0.155
Top1000noExcludedno
Contacts18H-bonds13
Artifact reasongeometry warning; 6 clashes; 2 protein clashes; high strain Δ 48.3
Residues
ARG140 ARG144 ASN106 GLN104 GLU138 HIS105 HIS141 MET101 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49

Protein summary

302 residues
Protein targetT12Atoms4598
Residues302Chains2
Residue summaryARG:576; ILE:456; VAL:448; GLU:360; ALA:340; LEU:304; TYR:252; HIS:204; PRO:196; THR:196; GLY:182; LYS:176; ASP:168; PHE:160; MET:153; SER:121

Receptor context

1 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 1 Excluded HETATM 0
Kept cofactors / ions
A:CSD72

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6FXSContacts16
PoseOpen native poseHB0
IFP residues
ARG140 ARG144 ASN106 HIS105 HIS141 ARG46 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49
Current overlap15Native recall0.94
Jaccard0.79RMSD-
HB strict7Strict recall0.58
HB same residue+role8HB role recall0.80
HB same residue8HB residue recall0.80

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
644 0.07467650484793296 -1.17551 -27.9704 10 13 0 0.00 0.00 - no Open
630 0.31605851962409415 -1.3698 -37.7576 13 12 0 0.00 0.00 - no Open
640 1.8840439934935043 -1.06732 -30.545 4 12 0 0.00 0.00 - no Open
627 1.901340798872262 -1.02422 -25.5677 8 16 0 0.00 0.00 - no Open
646 2.4604224930937084 -1.26732 -29.0037 10 16 0 0.00 0.00 - no Open
639 3.296573031191917 -1.29669 -29.6725 13 18 15 0.94 0.80 - no Current
642 3.3256697539250615 -0.924801 -16.978 8 10 0 0.00 0.00 - no Open
660 3.947674186548834 -1.35108 -30.6177 11 20 0 0.00 0.00 - no Open
649 4.311540670753228 -1.0456 -23.7588 12 16 0 0.00 0.00 - no Open
642 4.7302940548873185 -1.16836 -28.7896 10 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 -29.672kcal/mol
Ligand efficiency (LE) -1.1412kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.515
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 354.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.82
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 48.26kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 105.44kcal/mol
Minimised FF energy 57.18kcal/mol

SASA & burial

✓ computed
SASA (unbound) 629.3Ų
Total solvent-accessible surface area of free ligand
BSA total 501.9Ų
Buried surface area upon binding
BSA apolar 366.8Ų
Hydrophobic contacts buried
BSA polar 135.1Ų
Polar contacts buried
Fraction buried 79.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 73.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2151.5Ų
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 2454.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 789.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)