FAIRMol

ulfkktlib_209

Pose ID 4216 Compound 2691 Pose 153

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 ulfkktlib_209
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
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
30.4 kcal/mol
Protein clashes
0
Internal clashes
1
Native overlap
contact recall 0.63, Jaccard 0.46, H-bond role recall 0.00
Burial
88%
Hydrophobic fit
96%
Reason: no major geometry red flags detected
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.767 kcal/mol/HA) ✓ Good fit quality (FQ -7.33) ✓ Good H-bonds (3 bonds) ✓ Deep burial (88% SASA buried) ✓ Lipophilic contacts well-matched (96%) ✗ Very high strain energy (30.4 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (5)
Score
-22.253
kcal/mol
LE
-0.767
kcal/mol/HA
Fit Quality
-7.33
FQ (Leeson)
HAC
29
heavy atoms
MW
401
Da
LogP
4.18
cLogP
Strain ΔE
30.4 kcal/mol
SASA buried
88%
Lipo contact
96% BSA apolar/total
SASA unbound
755 Ų
Apolar buried
645 Ų

Interaction summary

HB 3 HY 24 PI 1 CLASH 1

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 rank-0.130Score-22.253
Inter norm-1.043Intra norm0.275
Top1000noExcludedno
Contacts19H-bonds3
Artifact reasongeometry warning; 5 clashes; 1 protein contact clash; 1 cofactor-context clash; high strain Δ 30.2
Residues
ARG14 CYS168 GLU217 GLY205 LEU208 LEU209 LEU263 LYS220 LYS224 MET163 MET169 MET213 NAP301 PHE171 PHE97 PRO210 TRP221 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 overlap12Native recall0.63
Jaccard0.46RMSD-
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
153 -0.13046785218784243 -1.04273 -22.2535 3 19 12 0.63 0.00 - 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 -22.253kcal/mol
Ligand efficiency (LE) -0.7674kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.325
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 400.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.18
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 30.41kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 86.62kcal/mol
Minimised FF energy 56.21kcal/mol

SASA & burial

✓ computed
SASA (unbound) 755.3Ų
Total solvent-accessible surface area of free ligand
BSA total 668.5Ų
Buried surface area upon binding
BSA apolar 645.2Ų
Hydrophobic contacts buried
BSA polar 23.2Ų
Polar contacts buried
Fraction buried 88.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 96.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1873.1Ų
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 910.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)