FAIRMol

Z18509545

Pose ID 4696 Compound 704 Pose 633

DB fairmolDocking 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 Z18509545
PDB6RX6

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
18.5 kcal/mol
Protein clashes
0
Internal clashes
11
Native overlap
contact recall 0.74, Jaccard 0.64, H-bond role recall 0.00
Burial
89%
Hydrophobic fit
81%
Reason: 11 internal clashes
11 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.082 kcal/mol/HA) ✓ Good fit quality (FQ -10.33) ✓ Good H-bonds (3 bonds) ✓ Deep burial (89% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ Moderate strain (18.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-31.388
kcal/mol
LE
-1.082
kcal/mol/HA
Fit Quality
-10.33
FQ (Leeson)
HAC
29
heavy atoms
MW
410
Da
LogP
2.78
cLogP
Strain ΔE
18.5 kcal/mol
SASA buried
89%
Lipo contact
81% BSA apolar/total
SASA unbound
639 Ų
Apolar buried
464 Ų

Interaction summary

HB 3 HY 24 PI 4 CLASH 0

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

No clash · clashes detected for this pose.
Final rank0.262Score-31.388
Inter norm-1.102Intra norm0.020
Top1000noExcludedno
Contacts17H-bonds3
Artifact reasongeometry warning; 11 clashes; 1 protein contact clash
Residues
ARG14 ASP161 CYS168 GLU217 LEU208 LEU209 LYS220 MET169 MET213 NAP301 PHE171 PHE97 PRO210 SER207 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 overlap14Native recall0.74
Jaccard0.64RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue1HB residue recall0.20

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
633 0.2617411494880156 -1.10204 -31.388 3 17 14 0.74 0.00 - no Current
623 0.7630253132284526 -0.957756 -25.8221 1 18 0 0.00 0.00 - no Open
642 1.1076329238342517 -0.820794 -23.2766 6 13 0 0.00 0.00 - no Open
616 1.4223813885356413 -0.871795 -21.9547 2 17 0 0.00 0.00 - no Open
652 1.929780656881121 -1.08923 -28.9651 7 21 0 0.00 0.00 - no Open
630 2.1407979593867883 -1.03918 -26.9312 11 16 0 0.00 0.00 - no Open
638 2.582980298651682 -0.930167 -25.6601 13 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 -31.388kcal/mol
Ligand efficiency (LE) -1.0823kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.332
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 410.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.78
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 18.45kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 23.83kcal/mol
Minimised FF energy 5.37kcal/mol

SASA & burial

✓ computed
SASA (unbound) 638.8Ų
Total solvent-accessible surface area of free ligand
BSA total 571.3Ų
Buried surface area upon binding
BSA apolar 463.5Ų
Hydrophobic contacts buried
BSA polar 107.8Ų
Polar contacts buried
Fraction buried 89.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1636.9Ų
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 924.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)