FAIRMol

Z56071437

Pose ID 13466 Compound 311 Pose 587

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T20
T. brucei TR (Z-site (fragment hotspot)) T. brucei Z-site (fragment hotspot)
Ligand Z56071437
PDB9IFH

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Weak or marginal quality
Binding strong Geometry high Native strong SASA done
Strain ΔE
24.3 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.75, Jaccard 0.50, H-bond role recall 0.00
Burial
44%
Hydrophobic fit
90%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.764 kcal/mol/HA) ✓ Good fit quality (FQ -7.45) ✓ Good H-bonds (5 bonds) ✓ Good burial (44% SASA buried) ✓ Lipophilic contacts well-matched (90%) ✗ High strain energy (24.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-23.696
kcal/mol
LE
-0.764
kcal/mol/HA
Fit Quality
-7.45
FQ (Leeson)
HAC
31
heavy atoms
MW
500
Da
LogP
5.50
cLogP
Strain ΔE
24.3 kcal/mol
SASA buried
44%
Lipo contact
90% BSA apolar/total
SASA unbound
767 Ų
Apolar buried
306 Ų

Interaction summary

HB 5 HY 13 PI 0 CLASH 1

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

Final rank3.744Score-23.696
Inter norm-0.643Intra norm-0.122
Top1000noExcludedno
Contacts10H-bonds5
Artifact reasongeometry warning; 13 clashes; 2 protein clashes; moderate strain Δ 24.2
Residues
ASN402 LEU399 LYS410 MET393 PHE396 PRO398 SER394 SER395 SER475 THR397

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name9IFHContacts8
PoseOpen native poseHB0
IFP residues
ASN402 GLU467 LEU399 PHE396 PRO398 SER394 SER470 THR397
Current overlap6Native recall0.75
Jaccard0.50RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

492 residues
Protein targetT20Atoms7539
Residues492Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:264; MET:221

Receptor context

1 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 1 Excluded HETATM 0
Kept cofactors / ions
A:FAD501

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
572 0.5870117947832066 -1.10765 -37.5989 7 16 0 0.00 0.00 - no Open
583 0.8823549273857154 -0.910836 -30.2227 2 20 0 0.00 0.00 - no Open
592 1.310495564240597 -0.754262 -27.3292 4 16 0 0.00 0.00 - no Open
611 1.7798849023795245 -0.802683 -26.2147 4 16 0 0.00 0.00 - no Open
594 1.9412230667148331 -0.877204 -32.0703 1 19 0 0.00 0.00 - no Open
584 2.0822003114507757 -0.856641 -25.7246 2 18 0 0.00 0.00 - no Open
583 2.606119674997513 -0.894636 -26.6402 9 16 0 0.00 0.00 - no Open
600 2.62217074979796 -0.689693 -24.6956 3 8 0 0.00 0.00 - no Open
575 3.3580502961066707 -0.8137 -25.6478 3 15 0 0.00 0.00 - no Open
595 3.5009994029016003 -0.774293 -24.4273 4 21 0 0.00 0.00 - no Open
587 3.744243536944524 -0.642671 -23.6962 5 10 6 0.75 0.00 - no Current
600 3.987159201366124 -1.08362 -33.2245 13 19 0 0.00 0.00 - no Open
591 6.027892840267617 -0.912188 -27.1412 8 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 -23.696kcal/mol
Ligand efficiency (LE) -0.7644kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.447
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 500.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.50
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 24.25kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -31.13kcal/mol
Minimised FF energy -55.38kcal/mol

SASA & burial

✓ computed
SASA (unbound) 766.5Ų
Total solvent-accessible surface area of free ligand
BSA total 340.5Ų
Buried surface area upon binding
BSA apolar 306.1Ų
Hydrophobic contacts buried
BSA polar 34.4Ų
Polar contacts buried
Fraction buried 44.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3125.7Ų
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 4069.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1569.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)