FAIRMol

Z44831771

Pose ID 14019 Compound 641 Pose 461

DB SELECTIONDocking 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 Z44831771
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
21.0 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.93, Jaccard 0.68, H-bond role recall 0.56
Burial
70%
Hydrophobic fit
80%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.086 kcal/mol/HA) ✓ Good fit quality (FQ -10.68) ✓ Strong H-bond network (14 bonds) ✓ Deep burial (70% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ High strain energy (21.0 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (10) ✗ Many internal clashes (17)
Score
-34.758
kcal/mol
LE
-1.086
kcal/mol/HA
Fit Quality
-10.68
FQ (Leeson)
HAC
32
heavy atoms
MW
434
Da
LogP
3.50
cLogP
Strain ΔE
21.0 kcal/mol
SASA buried
70%
Lipo contact
80% BSA apolar/total
SASA unbound
715 Ų
Apolar buried
397 Ų

Interaction summary

HB 14 HY 8 PI 4 CLASH 3
Final rank2.522Score-34.758
Inter norm-0.941Intra norm-0.145
Top1000noExcludedno
Contacts18H-bonds14
Artifact reasongeometry warning; 17 clashes; 10 protein contact clashes; moderate strain Δ 21.0
Residues
ARG137 ARG141 ASN103 HIS102 MET98 TYR94 ARG113 ASP10 CYS69 GLY70 GLY72 GLY74 HIS11 ILE73 PRO12 SER43 SER71 TYR46

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

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 overlap13Native recall0.93
Jaccard0.68RMSD-
HB strict6Strict recall0.50
HB same residue+role5HB role recall0.56
HB same residue5HB residue recall0.62

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
461 2.5218174144170837 -0.941146 -34.7577 14 18 13 0.93 0.56 - no Current
517 3.4967600637920304 -0.859572 -33.8612 8 13 0 0.00 0.00 - no Open
442 3.539614290888217 -0.942522 -30.879 7 14 0 0.00 0.00 - no Open
417 3.7628131150683823 -1.03419 -29.2761 14 15 0 0.00 0.00 - no Open
434 4.039285790739431 -1.04701 -30.7908 11 18 0 0.00 0.00 - no Open
501 4.482692559783027 -1.00427 -28.9224 7 20 0 0.00 0.00 - no Open
491 5.352094304022408 -0.947279 -26.8801 11 21 0 0.00 0.00 - no Open
464 6.042913748967145 -0.748819 -21.3543 7 13 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 -34.758kcal/mol
Ligand efficiency (LE) -1.0862kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.682
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 434.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.50
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 21.05kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 149.69kcal/mol
Minimised FF energy 128.65kcal/mol

SASA & burial

✓ computed
SASA (unbound) 715.5Ų
Total solvent-accessible surface area of free ligand
BSA total 499.5Ų
Buried surface area upon binding
BSA apolar 397.0Ų
Hydrophobic contacts buried
BSA polar 102.5Ų
Polar contacts buried
Fraction buried 69.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2252.2Ų
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 785.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)