FAIRMol

Z31287535

Pose ID 5140 Compound 2140 Pose 399

DB fairmolDocking 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 Z31287535
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
30.7 kcal/mol
Protein clashes
7
Internal clashes
8
Native overlap
contact recall 0.74, Jaccard 0.61, H-bond role recall 0.20
Burial
87%
Hydrophobic fit
83%
Reason: 8 internal clashes
7 protein-contact clashes 8 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.959 kcal/mol/HA) ✓ Good fit quality (FQ -9.75) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (87% SASA buried) ✓ Lipophilic contacts well-matched (83%) ✗ Very high strain energy (30.7 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (10) ✗ Many internal clashes (22)
Score
-34.532
kcal/mol
LE
-0.959
kcal/mol/HA
Fit Quality
-9.75
FQ (Leeson)
HAC
36
heavy atoms
MW
486
Da
LogP
3.91
cLogP
Strain ΔE
30.7 kcal/mol
SASA buried
87%
Lipo contact
83% BSA apolar/total
SASA unbound
779 Ų
Apolar buried
561 Ų

Interaction summary

HB 10 HY 24 PI 3 CLASH 8

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 rank3.018Score-34.532
Inter norm-0.998Intra norm0.038
Top1000noExcludedno
Contacts18H-bonds10
Artifact reasongeometry warning; 22 clashes; 10 protein contact clashes; 1 cofactor-context clash; high strain Δ 30.7
Residues
ARG14 ASP161 CYS168 GLY205 LEU208 LEU209 LEU263 LYS13 MET163 NAP301 PHE97 PRO210 SER207 SER95 TRP221 TYR174 VAL206 HIS267

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

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
351 2.14359219316684 -0.794939 -28.7493 3 16 0 0.00 0.00 - no Open
399 3.018275984807697 -0.997526 -34.5323 10 18 14 0.74 0.20 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -34.532kcal/mol
Ligand efficiency (LE) -0.9592kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.749
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 485.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.91
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 30.70kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 156.43kcal/mol
Minimised FF energy 125.73kcal/mol

SASA & burial

✓ computed
SASA (unbound) 779.2Ų
Total solvent-accessible surface area of free ligand
BSA total 675.1Ų
Buried surface area upon binding
BSA apolar 561.0Ų
Hydrophobic contacts buried
BSA polar 114.1Ų
Polar contacts buried
Fraction buried 86.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 83.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1762.5Ų
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 947.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)