FAIRMol

ulfkktlib_2470

Pose ID 4961 Compound 3096 Pose 220

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_2470
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
29.8 kcal/mol
Protein clashes
5
Internal clashes
7
Native overlap
contact recall 0.68, Jaccard 0.54, H-bond role recall 0.00
Burial
98%
Hydrophobic fit
86%
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 (-1.032 kcal/mol/HA) ✓ Good fit quality (FQ -10.05) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (86%) ✗ High strain energy (29.8 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Many internal clashes (17)
Score
-31.987
kcal/mol
LE
-1.032
kcal/mol/HA
Fit Quality
-10.05
FQ (Leeson)
HAC
31
heavy atoms
MW
430
Da
LogP
4.43
cLogP
Strain ΔE
29.8 kcal/mol
SASA buried
98%
Lipo contact
86% BSA apolar/total
SASA unbound
671 Ų
Apolar buried
566 Ų

Interaction summary

HB 1 HY 24 PI 3 CLASH 7
Final rank1.682Score-31.987
Inter norm-1.088Intra norm0.056
Top1000noExcludedno
Contacts18H-bonds1
Artifact reasongeometry warning; 17 clashes; 5 protein contact clashes; 3 cofactor-context clashes; moderate strain Δ 29.8
Residues
ARG14 ASN175 ASP161 CYS168 GLY205 LEU209 LEU263 MET163 MET213 NAP301 PHE171 PHE97 PRO167 PRO210 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 overlap13Native recall0.68
Jaccard0.54RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
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
220 1.6819959560487678 -1.08801 -31.987 1 18 13 0.68 0.00 - no Current
228 2.9027262539249445 -1.19925 -36.8851 7 24 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 -31.987kcal/mol
Ligand efficiency (LE) -1.0318kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.052
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 429.9Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.43
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.76kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 71.61kcal/mol
Minimised FF energy 41.85kcal/mol

SASA & burial

✓ computed
SASA (unbound) 671.1Ų
Total solvent-accessible surface area of free ligand
BSA total 655.5Ų
Buried surface area upon binding
BSA apolar 565.9Ų
Hydrophobic contacts buried
BSA polar 89.6Ų
Polar contacts buried
Fraction buried 97.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 86.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1712.2Ų
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 921.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)