FAIRMol

Z33480205

Pose ID 5209 Compound 308 Pose 468

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T08
T. brucei PTR1 T. brucei
Ligand Z33480205
PDB6RX6

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 mixed SASA done
Strain ΔE
42.9 kcal/mol
Protein clashes
2
Internal clashes
3
Native overlap
contact recall 0.53, Jaccard 0.45, H-bond role recall 0.40
Burial
87%
Hydrophobic fit
83%
Reason: strain 42.9 kcal/mol
strain ΔE 42.9 kcal/mol 2 protein-contact clashes 3 intramolecular clashes 55% of hydrophobic surface appears solvent-exposed (11/20 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 (-1.218 kcal/mol/HA) ✓ Good fit quality (FQ -11.37) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (87% SASA buried) ✓ Lipophilic contacts well-matched (83%) ✗ Extreme strain energy (42.9 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Many internal clashes (12)
Score
-32.890
kcal/mol
LE
-1.218
kcal/mol/HA
Fit Quality
-11.37
FQ (Leeson)
HAC
27
heavy atoms
MW
359
Da
LogP
2.13
cLogP
Strain ΔE
42.9 kcal/mol
SASA buried
87%
Lipo contact
83% BSA apolar/total
SASA unbound
626 Ų
Apolar buried
453 Ų

Interaction summary

HB 7 HY 11 PI 2 CLASH 3 ⚠ Exposure 55%
⚠️Partial hydrophobic solvent exposure
55% of hydrophobic surface appears solvent-exposed (11/20 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 20 Buried (contacted) 9 Exposed 11 LogP 2.13 H-bonds 7
Exposed fragments: phenyl (5/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (2 atoms exposed)
Final rank0.689Score-32.890
Inter norm-1.203Intra norm-0.015
Top1000noExcludedno
Contacts13H-bonds7
Artifact reasongeometry warning; 12 clashes; 3 protein contact clashes; 1 cofactor-context clash; high strain Δ 42.9
Residues
ALA96 ARG14 ASP161 CYS168 LEU208 LEU209 LYS13 NAP301 PHE97 PRO210 SER95 TYR174 VAL211

Protein summary

258 residues
Protein targetT08Atoms3881
Residues258Chains2
Residue summaryLEU:437; VAL:433; ALA:361; ARG:288; ILE:266; GLU:210; LYS:198; SER:198; ASN:182; THR:154; GLN:153; PHE:140; PRO:140; TYR:126; GLY:112; HIS:103

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:NAP301

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
NameTbPTR1_cW_6RX6_ReadyContacts19
PoseOpen native poseHB0
IFP residues
ARG14 ASP161 CYS168 GLY205 LEU208 LEU209 LYS178 MET213 NAP301 PHE171 PHE97 PRO210 PRO99 SER207 SER95 TRP221 TYR174 TYR98 VAL206
Current overlap10Native recall0.53
Jaccard0.45RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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
472 0.4377893302794625 -0.950392 -26.2449 0 11 0 0.00 0.00 - no Open
70 0.47106599804211174 -0.932342 -26.3572 0 12 0 0.00 0.00 - no Open
468 0.6892648734294643 -1.20281 -32.8902 7 13 10 0.53 0.40 - no Current
435 1.2154656197774207 -1.20918 -33.9917 9 16 0 0.00 0.00 - no Open
509 1.673956140477069 -1.03134 -29.6551 2 15 0 0.00 0.00 - no Open
519 1.9262872169038363 -0.995405 -29.7653 2 14 0 0.00 0.00 - no Open
494 3.039605889023859 -1.13239 -31.7742 5 15 0 0.00 0.00 - no Open
454 3.2164434138782974 -1.00198 -27.9483 10 16 0 0.00 0.00 - no Open
478 3.3020607865760265 -0.914987 -27.3309 9 15 0 0.00 0.00 - no Open
479 3.505705638707487 -0.714533 -21.8412 6 11 0 0.00 0.00 - no Open
496 3.6376046883594673 -0.802309 -23.1254 6 12 0 0.00 0.00 - no Open
98 3.939670025094264 -0.990476 -27.5314 10 16 0 0.00 0.00 - no Open
160 4.374456075611729 -0.732508 -20.3753 8 11 0 0.00 0.00 - no Open
117 4.576376594729494 -1.06666 -30.2454 6 15 0 0.00 0.00 - no Open
455 6.222747976212252 -1.01947 -28.54 12 16 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 -32.890kcal/mol
Ligand efficiency (LE) -1.2182kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.365
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 359.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.13
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 42.88kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 148.43kcal/mol
Minimised FF energy 105.55kcal/mol

SASA & burial

✓ computed
SASA (unbound) 625.8Ų
Total solvent-accessible surface area of free ligand
BSA total 546.3Ų
Buried surface area upon binding
BSA apolar 452.9Ų
Hydrophobic contacts buried
BSA polar 93.5Ų
Polar contacts buried
Fraction buried 87.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1613.8Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 962.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)