FAIRMol

KB_HAT_126

Pose ID 4164 Compound 2211 Pose 101

DB SELECTIONDocking pose analysis is being read from this database.
Compound detail Protein structures Back to compounds
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T07
T. brucei PTR1 T. brucei
Ligand KB_HAT_126
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
23.8 kcal/mol
Protein clashes
2
Internal clashes
4
Native overlap
contact recall 0.58, Jaccard 0.48, H-bond role recall 0.20
Burial
98%
Hydrophobic fit
76%
Reason: no major geometry red flags detected
2 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.381 kcal/mol/HA) ✓ Good fit quality (FQ -12.19) ✓ Good H-bonds (5 bonds) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ High strain energy (23.8 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Internal clashes (5)
Score
-31.769
kcal/mol
LE
-1.381
kcal/mol/HA
Fit Quality
-12.19
FQ (Leeson)
HAC
23
heavy atoms
MW
327
Da
LogP
3.55
cLogP
Strain ΔE
23.8 kcal/mol
SASA buried
98%
Lipo contact
76% BSA apolar/total
SASA unbound
567 Ų
Apolar buried
421 Ų

Interaction summary

HB 5 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 rank-0.236Score-31.769
Inter norm-1.405Intra norm0.024
Top1000noExcludedno
Contacts15H-bonds5
Artifact reasongeometry warning; 5 clashes; 3 protein contact clashes; 3 cofactor-context clashes; moderate strain Δ 23.8
Residues
ARG14 ASN175 ASP161 CYS168 GLY205 MET163 NAP301 PHE171 PHE97 PRO167 SER95 TRP221 TYR174 VAL164 VAL206

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 overlap11Native recall0.58
Jaccard0.48RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
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
101 -0.23609279591483429 -1.40509 -31.769 5 15 11 0.58 0.20 - no Current
128 -0.17248369282857298 -1.393 -31.3124 5 16 12 0.63 0.20 - no Open
86 2.837717811956138 -1.29906 -31.3104 5 14 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 -31.769kcal/mol
Ligand efficiency (LE) -1.3813kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -12.191
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties
Molecular weight 327.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.55
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)
Strain energy (ΔE) 23.83kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -4.95kcal/mol
Minimised FF energy -28.77kcal/mol

SASA & burial

✓ computed
SASA (unbound) 567.4Ų
Total solvent-accessible surface area of free ligand
BSA total 554.5Ų
Buried surface area upon binding
BSA apolar 421.0Ų
Hydrophobic contacts buried
BSA polar 133.5Ų
Polar contacts buried
Fraction buried 97.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 75.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1555.3Ų
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 927.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)