FAIRMol

ulfkktlib_902

Pose ID 4934 Compound 3069 Pose 193

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 ulfkktlib_902
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
24.6 kcal/mol
Protein clashes
5
Internal clashes
7
Native overlap
contact recall 0.74, Jaccard 0.61, H-bond role recall 0.20
Burial
93%
Hydrophobic fit
71%
Reason: 7 internal clashes
5 protein-contact clashes 7 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.250 kcal/mol/HA) ✓ Good fit quality (FQ -11.66) ✓ Deep burial (93% SASA buried) ✓ Lipophilic contacts well-matched (71%) ✗ High strain energy (24.6 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Many internal clashes (16)
Score
-33.758
kcal/mol
LE
-1.250
kcal/mol/HA
Fit Quality
-11.66
FQ (Leeson)
HAC
27
heavy atoms
MW
397
Da
LogP
2.44
cLogP
Strain ΔE
24.6 kcal/mol
SASA buried
93%
Lipo contact
71% BSA apolar/total
SASA unbound
640 Ų
Apolar buried
424 Ų

Interaction summary

HB 2 HY 24 PI 2 CLASH 7
Final rank1.266Score-33.758
Inter norm-1.209Intra norm-0.042
Top1000noExcludedno
Contacts18H-bonds2
Artifact reasongeometry warning; 16 clashes; 5 protein contact clashes; 3 cofactor-context clashes; moderate strain Δ 24.6
Residues
ARG14 ASN175 ASP161 CYS168 GLY205 LEU208 LEU209 MET163 NAP301 PHE171 PHE97 PRO167 PRO210 SER95 TRP221 TYR174 VAL164 VAL206

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

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 residue1HB residue recall0.20

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
127 0.9397762219089222 -1.11364 -26.1476 6 16 0 0.00 0.00 - no Open
193 1.2655645012788572 -1.20855 -33.7575 2 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 -33.758kcal/mol
Ligand efficiency (LE) -1.2503kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.665
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 397.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.44
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 24.59kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 47.22kcal/mol
Minimised FF energy 22.63kcal/mol

SASA & burial

✓ computed
SASA (unbound) 639.8Ų
Total solvent-accessible surface area of free ligand
BSA total 597.6Ų
Buried surface area upon binding
BSA apolar 424.0Ų
Hydrophobic contacts buried
BSA polar 173.6Ų
Polar contacts buried
Fraction buried 93.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 71.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1590.1Ų
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 925.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)