FAIRMol

Z56887099

Pose ID 4554 Compound 2932 Pose 491

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T07
T. brucei PTR1 T. brucei
Ligand Z56887099
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 strong SASA done
Strain ΔE
45.7 kcal/mol
Protein clashes
8
Internal clashes
10
Native overlap
contact recall 0.74, Jaccard 0.61, H-bond role recall 0.20
Burial
87%
Hydrophobic fit
82%
Reason: 10 internal clashes, strain 45.7 kcal/mol
strain ΔE 45.7 kcal/mol 8 protein-contact clashes 10 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.782 kcal/mol/HA) ✓ Good fit quality (FQ -7.76) ✓ Good H-bonds (5 bonds) ✓ Deep burial (87% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ Extreme strain energy (45.7 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (16)
Score
-25.805
kcal/mol
LE
-0.782
kcal/mol/HA
Fit Quality
-7.76
FQ (Leeson)
HAC
33
heavy atoms
MW
461
Da
LogP
5.19
cLogP
Strain ΔE
45.7 kcal/mol
SASA buried
87%
Lipo contact
82% BSA apolar/total
SASA unbound
771 Ų
Apolar buried
549 Ų

Interaction summary

HB 5 HY 24 PI 5 CLASH 10
Final rank3.385Score-25.805
Inter norm-0.935Intra norm0.153
Top1000noExcludedno
Contacts18H-bonds5
Artifact reasongeometry warning; 16 clashes; 1 protein clash; 3 cofactor-context clashes; high strain Δ 45.7
Residues
ARG14 ASN175 ASP161 CYS168 GLU217 GLY205 LEU209 MET163 MET213 NAP301 PHE171 PHE97 PRO167 PRO210 PRO99 TRP221 TYR174 VAL206

Protein summary

275 residues
Protein targetT07Atoms3932
Residues275Chains3
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 overlap14Native recall0.74
Jaccard0.61RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
HB same residue3HB residue recall0.60

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
525 2.0215541752592547 -0.724726 -19.2697 5 15 0 0.00 0.00 - no Open
506 3.138918837258046 -0.785555 -22.7184 3 16 0 0.00 0.00 - no Open
511 3.3119931433194325 -0.683503 -16.7223 4 11 0 0.00 0.00 - no Open
491 3.385380428621768 -0.934817 -25.8045 5 18 14 0.74 0.20 - no Current
514 4.458260016453443 -0.731588 -23.1817 7 14 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 -25.805kcal/mol
Ligand efficiency (LE) -0.7820kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.758
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 460.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.19
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 45.73kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 99.68kcal/mol
Minimised FF energy 53.95kcal/mol

SASA & burial

✓ computed
SASA (unbound) 770.5Ų
Total solvent-accessible surface area of free ligand
BSA total 672.6Ų
Buried surface area upon binding
BSA apolar 548.8Ų
Hydrophobic contacts buried
BSA polar 123.8Ų
Polar contacts buried
Fraction buried 87.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1787.6Ų
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 908.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)