FAIRMol

Z1977911285

Pose ID 14213 Compound 5353 Pose 655

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 Z1977911285
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 high Native strong SASA done
Strain ΔE
9.4 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 1.00, Jaccard 0.82, H-bond role recall 0.33
Burial
90%
Hydrophobic fit
78%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.205 kcal/mol/HA) ✓ Good fit quality (FQ -10.08) ✓ Good H-bonds (4 bonds) ✓ Deep burial (90% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Moderate strain (9.4 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (7)
Score
-24.093
kcal/mol
LE
-1.205
kcal/mol/HA
Fit Quality
-10.08
FQ (Leeson)
HAC
20
heavy atoms
MW
291
Da
LogP
3.12
cLogP
Final rank
1.3774
rank score
Inter norm
-1.212
normalised
Contacts
17
H-bonds 5
Strain ΔE
9.4 kcal/mol
SASA buried
90%
Lipo contact
78% BSA apolar/total
SASA unbound
501 Ų
Apolar buried
350 Ų

Interaction summary

HBD 2 HBA 2 HY 5 PI 3 CLASH 1

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.
Name3K7OContacts14
PoseOpen native poseHB0
IFP residues
ARG137 ARG141 ASN103 HIS102 HIS138 ASP10 CYS69 GLY70 GLY74 HIS11 ILE73 PRO12 SER71 TYR46
Current overlap14Native recall1.00
Jaccard0.82RMSD-
HB strict4Strict recall0.33
HB same residue+role3HB role recall0.33
HB same residue3HB residue recall0.38

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
655 1.3773687889477226 -1.21158 -24.0934 5 17 14 1.00 0.33 - 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 -24.093kcal/mol
Ligand efficiency (LE) -1.2047kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.081
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 20HA

Physicochemical properties

Molecular weight 291.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.12
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 9.38kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -4.67kcal/mol
Minimised FF energy -14.05kcal/mol

SASA & burial

✓ computed
SASA (unbound) 500.9Ų
Total solvent-accessible surface area of free ligand
BSA total 448.8Ų
Buried surface area upon binding
BSA apolar 350.0Ų
Hydrophobic contacts buried
BSA polar 98.8Ų
Polar contacts buried
Fraction buried 89.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2143.9Ų
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 2482.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 739.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)