FAIRMol

Z49633576

Pose ID 14179 Compound 2901 Pose 621

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 Z49633576
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
74.5 kcal/mol
Protein clashes
0
Internal clashes
10
Native overlap
contact recall 0.93, Jaccard 0.72, H-bond role recall 0.67
Burial
75%
Hydrophobic fit
69%
Reason: 10 internal clashes, strain 74.5 kcal/mol
strain ΔE 74.5 kcal/mol 10 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.793 kcal/mol/HA) ✓ Good fit quality (FQ -7.65) ✓ Strong H-bond network (11 bonds) ✓ Deep burial (75% SASA buried) ✓ Lipophilic contacts well-matched (69%) ✗ Extreme strain energy (74.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-23.783
kcal/mol
LE
-0.793
kcal/mol/HA
Fit Quality
-7.65
FQ (Leeson)
HAC
30
heavy atoms
MW
440
Da
LogP
-0.85
cLogP
Strain ΔE
74.5 kcal/mol
SASA buried
75%
Lipo contact
69% BSA apolar/total
SASA unbound
659 Ų
Apolar buried
340 Ų

Interaction summary

HB 11 HY 9 PI 3 CLASH 0

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

No clash · clashes detected for this pose.
Final rank4.089Score-23.783
Inter norm-0.995Intra norm0.202
Top1000noExcludedno
Contacts17H-bonds11
Artifact reasongeometry warning; 10 clashes; 3 protein clashes; high strain Δ 74.5
Residues
ARG137 ARG141 ASN103 HIS102 HIS138 ARG113 CYS69 GLY70 GLY72 GLY74 HIS11 ILE73 MET75 PRO12 SER43 SER71 TYR46

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
Jaccard0.72RMSD-
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
596 2.3252128428059002 -1.13727 -26.7529 10 19 0 0.00 0.00 - no Open
630 3.1472053235268254 -1.23245 -33.5359 14 23 0 0.00 0.00 - no Open
611 3.7738766762258784 -0.734441 -18.0833 7 7 0 0.00 0.00 - no Open
621 4.08861341711193 -0.995124 -23.7831 11 17 13 0.93 0.67 - no Current
609 4.296899294431502 -1.03684 -25.0444 11 15 0 0.00 0.00 - no Open
625 4.996400449539082 -0.832977 -22.274 10 10 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 -23.783kcal/mol
Ligand efficiency (LE) -0.7928kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.647
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 440.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) -0.85
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 74.54kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 104.02kcal/mol
Minimised FF energy 29.48kcal/mol

SASA & burial

✓ computed
SASA (unbound) 658.7Ų
Total solvent-accessible surface area of free ligand
BSA total 495.6Ų
Buried surface area upon binding
BSA apolar 340.4Ų
Hydrophobic contacts buried
BSA polar 155.2Ų
Polar contacts buried
Fraction buried 75.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 68.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2190.5Ų
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 740.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)