FAIRMol

ulfkktlib_2975

Pose ID 13721 Compound 5434 Pose 163

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T21
T. cruzi R5P T. cruzi
Ligand ulfkktlib_2975
PDB3K7O

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
14.2 kcal/mol
Protein clashes
5
Internal clashes
5
Native overlap
contact recall 0.86, Jaccard 0.71, H-bond role recall 0.67
Burial
89%
Hydrophobic fit
66%
Reason: no major geometry red flags detected
5 protein-contact clashes 5 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 Low Ames Alert DILI Low
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.232 kcal/mol/HA) ✓ Good fit quality (FQ -10.31) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (89% SASA buried) ✓ Lipophilic contacts well-matched (66%) ✗ Moderate strain (14.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (8)
Score
-24.631
kcal/mol
LE
-1.232
kcal/mol/HA
Fit Quality
-10.31
FQ (Leeson)
HAC
20
heavy atoms
MW
286
Da
LogP
2.53
cLogP
Final rank
3.4418
rank score
Inter norm
-1.214
normalised
Contacts
15
H-bonds 15
Strain ΔE
14.2 kcal/mol
SASA buried
89%
Lipo contact
66% BSA apolar/total
SASA unbound
452 Ų
Apolar buried
265 Ų

Interaction summary

HBA 8 HY 4 PI 3 CLASH 5

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 4.

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.
Name3K7OContacts14
PoseOpen native poseHB0
IFP residues
ARG137 ARG141 ASN103 HIS102 HIS138 ASP10 CYS69 GLY70 GLY74 HIS11 ILE73 PRO12 SER71 TYR46
Current overlap12Native recall0.86
Jaccard0.71RMSD-
HB strict7Strict recall0.58
HB same residue+role6HB role recall0.67
HB same residue6HB residue recall0.75

Protein summary

305 residues
Protein targetT21Atoms4646
Residues305Chains2
Residue summaryARG:576; ILE:532; VAL:512; GLU:420; ALA:360; PHE:240; HIS:238; LYS:220; THR:210; LEU:190; PRO:168; TYR:168; GLY:154; SER:154; ASP:144; ASN:112

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
163 3.441806184605696 -1.21428 -24.6306 15 15 12 0.86 0.67 - no Current
162 3.4493231258365276 -1.21514 -24.6459 15 15 12 0.86 0.67 - 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 -24.631kcal/mol
Ligand efficiency (LE) -1.2315kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.306
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 20HA

Physicochemical properties

Molecular weight 285.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.53
Lipinski: ≤ 5
Rotatable bonds 1

Conformational strain (MMFF94s)

Strain energy (ΔE) 14.20kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 46.11kcal/mol
Minimised FF energy 31.91kcal/mol

SASA & burial

✓ computed
SASA (unbound) 452.1Ų
Total solvent-accessible surface area of free ligand
BSA total 401.1Ų
Buried surface area upon binding
BSA apolar 265.0Ų
Hydrophobic contacts buried
BSA polar 136.1Ų
Polar contacts buried
Fraction buried 88.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 66.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2055.6Ų
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 2482.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 738.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)