FAIRMol

ulfkktlib_3115

Pose ID 4271 Compound 2690 Pose 208

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 ulfkktlib_3115
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 mixed SASA done
Strain ΔE
21.4 kcal/mol
Protein clashes
2
Internal clashes
12
Native overlap
contact recall 0.53, Jaccard 0.53, H-bond role recall 0.40
Burial
98%
Hydrophobic fit
85%
Reason: 12 internal clashes
2 protein-contact clashes 12 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.934 kcal/mol/HA) ✓ Good fit quality (FQ -15.13) ✓ Strong H-bond network (14 bonds) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ High strain energy (21.4 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (2) ✗ Many internal clashes (12)
Score
-32.885
kcal/mol
LE
-1.934
kcal/mol/HA
Fit Quality
-15.13
FQ (Leeson)
HAC
17
heavy atoms
MW
231
Da
LogP
-0.27
cLogP
Strain ΔE
21.4 kcal/mol
SASA buried
98%
Lipo contact
85% BSA apolar/total
SASA unbound
434 Ų
Apolar buried
359 Ų

Interaction summary

HB 14 HY 11 PI 3 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 rank-0.134Score-32.885
Inter norm-1.936Intra norm0.001
Top1000noExcludedno
Contacts10H-bonds14
Artifact reasongeometry warning; 12 clashes; 2 protein contact clashes; 1 severe cofactor-context clash; moderate strain Δ 21.4
Residues
ARG14 ASP161 CYS168 LEU208 LEU209 NAP301 PHE97 PRO210 SER95 TYR174

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
Jaccard0.53RMSD-
HB strict3Strict recall0.50
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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
208 -0.13396598552115407 -1.93585 -32.8846 14 10 10 0.53 0.40 - no Current
168 2.252492419263152 -1.53984 -24.6268 8 17 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 -32.885kcal/mol
Ligand efficiency (LE) -1.9344kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -15.126
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 17HA

Physicochemical properties

Molecular weight 231.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) -0.27
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 21.36kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 221.54kcal/mol
Minimised FF energy 200.18kcal/mol

SASA & burial

✓ computed
SASA (unbound) 434.1Ų
Total solvent-accessible surface area of free ligand
BSA total 423.5Ų
Buried surface area upon binding
BSA apolar 359.2Ų
Hydrophobic contacts buried
BSA polar 64.3Ų
Polar contacts buried
Fraction buried 97.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 84.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1493.3Ų
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 923.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)