FAIRMol

ulfkktlib_3721

Pose ID 4277 Compound 706 Pose 214

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_3721
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
76.3 kcal/mol
Protein clashes
2
Internal clashes
4
Native overlap
contact recall 0.79, Jaccard 0.68, H-bond role recall 0.20
Burial
81%
Hydrophobic fit
94%
Reason: strain 76.3 kcal/mol
strain ΔE 76.3 kcal/mol 2 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.850 kcal/mol/HA) ✓ Good fit quality (FQ -8.51) ✓ Good H-bonds (4 bonds) ✓ Deep burial (81% SASA buried) ✓ Lipophilic contacts well-matched (94%) ✗ Extreme strain energy (76.3 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-28.905
kcal/mol
LE
-0.850
kcal/mol/HA
Fit Quality
-8.51
FQ (Leeson)
HAC
34
heavy atoms
MW
458
Da
LogP
2.03
cLogP
Strain ΔE
76.3 kcal/mol
SASA buried
81%
Lipo contact
94% BSA apolar/total
SASA unbound
773 Ų
Apolar buried
590 Ų

Interaction summary

HB 4 HY 24 PI 4 CLASH 4

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 rank1.974Score-28.905
Inter norm-0.913Intra norm0.063
Top1000noExcludedno
Contacts18H-bonds4
Artifact reasongeometry warning; 9 clashes; 1 protein clash; 2 cofactor-context clashes; high strain Δ 75.6
Residues
ARG14 ASP161 CYS168 GLU217 LEU208 LEU209 LYS220 MET163 MET213 NAP301 PHE171 PHE97 PRO210 PRO99 SER95 TRP221 TYR174 TYR98

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 overlap15Native recall0.79
Jaccard0.68RMSD-
HB strict0Strict recall0.00
HB same residue+role1HB role recall0.20
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
259 0.770096385254784 -0.758403 -25.9095 1 19 0 0.00 0.00 - no Open
214 1.974405344656588 -0.913185 -28.9047 4 18 15 0.79 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 -28.905kcal/mol
Ligand efficiency (LE) -0.8501kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.506
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 457.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.03
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 76.32kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 307.34kcal/mol
Minimised FF energy 231.02kcal/mol

SASA & burial

✓ computed
SASA (unbound) 772.6Ų
Total solvent-accessible surface area of free ligand
BSA total 629.0Ų
Buried surface area upon binding
BSA apolar 589.7Ų
Hydrophobic contacts buried
BSA polar 39.3Ų
Polar contacts buried
Fraction buried 81.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 93.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1848.9Ų
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 935.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)