FAIRMol

Z55694322

Pose ID 14190 Compound 256 Pose 632

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 Z55694322
PDB3K7O

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
37.2 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 1.00, Jaccard 0.82, H-bond role recall 0.78
Burial
67%
Hydrophobic fit
76%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes 48% of hydrophobic surface appears solvent-exposed (12/25 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.732 kcal/mol/HA) ✓ Good fit quality (FQ -7.26) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (67% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ Very high strain energy (37.2 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (9) ✗ Many internal clashes (18)
Score
-24.150
kcal/mol
LE
-0.732
kcal/mol/HA
Fit Quality
-7.26
FQ (Leeson)
HAC
33
heavy atoms
MW
460
Da
LogP
5.10
cLogP
Final rank
2.5846
rank score
Inter norm
-0.808
normalised
Contacts
17
H-bonds 9
Strain ΔE
37.2 kcal/mol
SASA buried
67%
Lipo contact
76% BSA apolar/total
SASA unbound
714 Ų
Apolar buried
363 Ų

Interaction summary

HBD 1 HBA 5 HY 3 PI 3 CLASH 4

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 6.

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 strict7Strict recall0.58
HB same residue+role7HB role recall0.78
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
620 0.9124878828115518 -0.742763 -23.1308 0 15 0 0.00 0.00 - no Open
616 1.5903297613763936 -0.695296 -20.3004 1 17 0 0.00 0.00 - no Open
617 1.6999776302048877 -0.781972 -26.1696 4 14 0 0.00 0.00 - no Open
606 2.1579267805035065 -0.935582 -30.0151 4 17 0 0.00 0.00 - no Open
619 2.321598553519423 -0.843726 -27.1331 2 17 0 0.00 0.00 - no Open
611 2.3721997365242466 -0.744991 -19.006 2 19 0 0.00 0.00 - no Open
632 2.5845937659195366 -0.808096 -24.1504 9 17 14 1.00 0.78 - no Current
628 3.0667722052197655 -0.693175 -22.2941 6 15 0 0.00 0.00 - no Open
615 3.648743788972634 -0.72495 -21.5538 6 19 0 0.00 0.00 - no Open
629 4.069678458429272 -0.67542 -22.0358 6 19 0 0.00 0.00 - no Open
630 4.138721914791422 -0.806706 -25.3439 5 18 0 0.00 0.00 - no Open
616 5.015225112007658 -0.909212 -28.7073 9 17 0 0.00 0.00 - no Open
641 5.605204418092712 -1.11254 -33.8589 9 20 0 0.00 0.00 - no Open
631 5.82846986775583 -0.854024 -26.3807 7 19 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 -24.150kcal/mol
Ligand efficiency (LE) -0.7318kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.261
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 459.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.10
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 37.23kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 54.64kcal/mol
Minimised FF energy 17.41kcal/mol

SASA & burial

✓ computed
SASA (unbound) 713.7Ų
Total solvent-accessible surface area of free ligand
BSA total 478.7Ų
Buried surface area upon binding
BSA apolar 362.9Ų
Hydrophobic contacts buried
BSA polar 115.8Ų
Polar contacts buried
Fraction buried 67.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 75.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2291.5Ų
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 786.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)