FAIRMol

Z26395442

Pose ID 4451 Compound 2539 Pose 388

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 Z26395442
PDB6RX6

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising and worth follow-up
Binding strong Geometry medium Native strong SASA done
Strain ΔE
14.4 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.53, Jaccard 0.43, H-bond role recall 0.60
Burial
95%
Hydrophobic fit
87%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.556 kcal/mol/HA) ✓ Good fit quality (FQ -13.28) ✓ Good H-bonds (5 bonds) ✓ Deep burial (95% SASA buried) ✓ Lipophilic contacts well-matched (87%) ✗ Moderate strain (14.4 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (7)
Score
-32.687
kcal/mol
LE
-1.556
kcal/mol/HA
Fit Quality
-13.28
FQ (Leeson)
HAC
21
heavy atoms
MW
280
Da
LogP
2.85
cLogP
Strain ΔE
14.4 kcal/mol
SASA buried
95%
Lipo contact
87% BSA apolar/total
SASA unbound
532 Ų
Apolar buried
443 Ų

Interaction summary

HB 5 HY 24 PI 2 CLASH 4
Final rank1.352Score-32.687
Inter norm-1.731Intra norm0.174
Top1000noExcludedno
Contacts14H-bonds5
Artifact reasongeometry warning; 7 clashes; 1 protein clash; 1 cofactor-context clash
Residues
ARG14 ASN175 ASP161 CYS168 LEU208 LEU209 MET163 NAP301 PHE171 PHE97 PRO167 PRO210 TYR174 VAL164

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 overlap10Native recall0.53
Jaccard0.43RMSD-
HB strict3Strict recall0.50
HB same residue+role3HB role recall0.60
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
418 -0.1812889329443324 -1.54909 -27.0511 6 14 10 0.53 0.60 - no Open
388 1.351747010435522 -1.73069 -32.6867 5 14 10 0.53 0.60 - no Current
402 1.4852201186218692 -1.10966 -19.7865 2 17 0 0.00 0.00 - no Open
442 3.2021252372100264 -1.00432 -18.1881 4 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 -32.687kcal/mol
Ligand efficiency (LE) -1.5565kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -13.276
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 21HA

Physicochemical properties

Molecular weight 280.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.85
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 14.39kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 34.06kcal/mol
Minimised FF energy 19.67kcal/mol

SASA & burial

✓ computed
SASA (unbound) 531.6Ų
Total solvent-accessible surface area of free ligand
BSA total 507.3Ų
Buried surface area upon binding
BSA apolar 443.2Ų
Hydrophobic contacts buried
BSA polar 64.1Ų
Polar contacts buried
Fraction buried 95.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 87.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1579.5Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 936.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)