FAIRMol

KB_Leish_45

Pose ID 4173 Compound 53 Pose 110

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 KB_Leish_45
PDB6RX6

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising and worth follow-up
Binding strong Geometry medium Native strong SASA done
Strain ΔE
18.2 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.68, Jaccard 0.54, H-bond role recall 0.60
Burial
99%
Hydrophobic fit
86%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Daphnia EC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.174 kcal/mol/HA) ✓ Good fit quality (FQ -10.82) ✓ Good H-bonds (3 bonds) ✓ Deep burial (99% SASA buried) ✓ Lipophilic contacts well-matched (86%) ✗ Moderate strain (18.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (7)
Score
-30.528
kcal/mol
LE
-1.174
kcal/mol/HA
Fit Quality
-10.82
FQ (Leeson)
HAC
26
heavy atoms
MW
346
Da
LogP
2.92
cLogP
Final rank
2.8643
rank score
Inter norm
-1.202
normalised
Contacts
18
H-bonds 6
Strain ΔE
18.2 kcal/mol
SASA buried
99%
Lipo contact
86% BSA apolar/total
SASA unbound
625 Ų
Apolar buried
530 Ų

Interaction summary

HBD 2 HBA 1 HY 9 PI 4 CLASH 4

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 3.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

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 strict2Strict recall0.33
HB same residue+role3HB role recall0.60
HB same residue4HB residue recall0.80

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
157 0.7117618756533478 -1.00994 -20.113 3 20 0 0.00 0.00 - no Open
87 2.2585325691088283 -1.09229 -25.7372 7 21 0 0.00 0.00 - no Open
149 2.513102290808282 -1.2589 -32.4954 6 18 13 0.68 0.60 - no Open
110 2.864260999450896 -1.20208 -30.5278 6 18 13 0.68 0.60 - no Current
129 3.1430621533001446 -0.817155 -20.782 5 13 0 0.00 0.00 - no Open
108 3.414687968297742 -1.21617 -27.759 10 18 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 -30.528kcal/mol
Ligand efficiency (LE) -1.1741kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.818
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 346.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.92
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 18.24kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 60.85kcal/mol
Minimised FF energy 42.61kcal/mol

SASA & burial

✓ computed
SASA (unbound) 624.7Ų
Total solvent-accessible surface area of free ligand
BSA total 619.1Ų
Buried surface area upon binding
BSA apolar 529.7Ų
Hydrophobic contacts buried
BSA polar 89.4Ų
Polar contacts buried
Fraction buried 99.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1666.7Ų
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 918.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)