FAIRMol

Z56833421

Pose ID 5289 Compound 1330 Pose 548

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 Z56833421
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
55.2 kcal/mol
Protein clashes
1
Internal clashes
5
Native overlap
contact recall 0.79, Jaccard 0.79, H-bond role recall 0.60
Burial
92%
Hydrophobic fit
68%
Reason: strain 55.2 kcal/mol
strain ΔE 55.2 kcal/mol 1 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.494 kcal/mol/HA) ✓ Good fit quality (FQ -13.77) ✓ Strong H-bond network (14 bonds) ✓ Deep burial (92% SASA buried) ✓ Lipophilic contacts well-matched (68%) ✗ Extreme strain energy (55.2 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (4) ✗ Internal clashes (9)
Score
-38.850
kcal/mol
LE
-1.494
kcal/mol/HA
Fit Quality
-13.77
FQ (Leeson)
HAC
26
heavy atoms
MW
378
Da
LogP
1.63
cLogP
Strain ΔE
55.2 kcal/mol
SASA buried
92%
Lipo contact
68% BSA apolar/total
SASA unbound
583 Ų
Apolar buried
367 Ų

Interaction summary

HB 14 HY 24 PI 3 CLASH 5

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

Final rank0.365Score-38.850
Inter norm-1.478Intra norm-0.016
Top1000noExcludedno
Contacts15H-bonds14
Artifact reasongeometry warning; 9 clashes; 4 protein contact clashes; 2 severe cofactor-context clashes; high strain Δ 55.2
Residues
ARG14 ASP161 CYS168 LEU208 LEU209 MET213 NAP301 PHE171 PHE97 PRO210 SER207 SER95 TRP221 TYR174 VAL206

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 overlap15Native recall0.79
Jaccard0.79RMSD-
HB strict4Strict recall0.67
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.60

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
556 0.11596813759084199 -0.968374 -25.5318 2 12 0 0.00 0.00 - no Open
539 0.3230390714061431 -1.64167 -41.9215 15 16 15 0.79 0.60 - no Open
548 0.36486237230405694 -1.47787 -38.8504 14 15 15 0.79 0.60 - no Current
542 0.8356380487075427 -1.25865 -29.071 12 14 0 0.00 0.00 - no Open
550 1.6297456967667494 -1.06544 -27.514 7 16 0 0.00 0.00 - no Open
563 2.6627752207943693 -1.24435 -27.5218 13 25 0 0.00 0.00 - no Open
564 2.735087330024168 -1.16799 -25.1652 9 13 0 0.00 0.00 - no Open
555 3.509533437630628 -1.24622 -31.2421 10 20 0 0.00 0.00 - no Open
577 4.092527184804983 -1.02633 -20.5964 11 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 -38.850kcal/mol
Ligand efficiency (LE) -1.4942kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -13.767
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 378.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.63
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 55.23kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 141.30kcal/mol
Minimised FF energy 86.08kcal/mol

SASA & burial

✓ computed
SASA (unbound) 583.5Ų
Total solvent-accessible surface area of free ligand
BSA total 538.7Ų
Buried surface area upon binding
BSA apolar 367.1Ų
Hydrophobic contacts buried
BSA polar 171.6Ų
Polar contacts buried
Fraction buried 92.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 68.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1540.1Ų
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 910.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)