FAIRMol

KB_chagas_52

Pose ID 4911 Compound 3052 Pose 170

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 KB_chagas_52
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 high Native strong SASA done
Strain ΔE
23.5 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.68, Jaccard 0.57, H-bond role recall 0.80
Burial
89%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.052 kcal/mol/HA) ✓ Good fit quality (FQ -10.35) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (89% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ High strain energy (23.5 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Many internal clashes (15)
Score
-33.677
kcal/mol
LE
-1.052
kcal/mol/HA
Fit Quality
-10.35
FQ (Leeson)
HAC
32
heavy atoms
MW
501
Da
LogP
2.30
cLogP
Strain ΔE
23.5 kcal/mol
SASA buried
89%
Lipo contact
82% BSA apolar/total
SASA unbound
703 Ų
Apolar buried
516 Ų

Interaction summary

HB 8 HY 24 PI 1 CLASH 1
Final rank1.109Score-33.677
Inter norm-1.094Intra norm0.040
Top1000noExcludedno
Contacts17H-bonds8
Artifact reasongeometry warning; 15 clashes; 3 protein contact clashes; 1 cofactor-context clash; moderate strain Δ 23.5
Residues
ARG14 ASP161 CYS168 GLY205 LEU209 LEU263 LYS13 MET163 MET213 NAP301 PHE97 PRO210 SER95 TRP221 TYR174 VAL206 VAL211

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
Jaccard0.57RMSD-
HB strict5Strict recall0.83
HB same residue+role4HB role recall0.80
HB same residue4HB residue recall0.80

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
170 1.1087737741072725 -1.09407 -33.6773 8 17 13 0.68 0.80 - no Current
134 2.2843175396031485 -0.75464 -23.9012 2 20 0 0.00 0.00 - no Open
175 2.966655470319756 -0.691317 -20.9747 7 11 0 0.00 0.00 - no Open
109 4.739249155118305 -0.786143 -24.6318 10 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 -33.677kcal/mol
Ligand efficiency (LE) -1.0524kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.350
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 501.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.30
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 23.53kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 106.60kcal/mol
Minimised FF energy 83.07kcal/mol

SASA & burial

✓ computed
SASA (unbound) 702.8Ų
Total solvent-accessible surface area of free ligand
BSA total 628.1Ų
Buried surface area upon binding
BSA apolar 516.3Ų
Hydrophobic contacts buried
BSA polar 111.8Ų
Polar contacts buried
Fraction buried 89.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1686.4Ų
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 954.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)