FAIRMol

Z56781211

Pose ID 7851 Compound 913 Pose 399

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T12
T. brucei R5P T. brucei
Ligand Z56781211
PDB6FXS

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
38.3 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.81, Jaccard 0.68, H-bond role recall 0.40
Burial
73%
Hydrophobic fit
79%
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 (-0.895 kcal/mol/HA) ✓ Good fit quality (FQ -8.55) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (73% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ Very high strain energy (38.3 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (8) ✗ Many internal clashes (14)
Score
-25.968
kcal/mol
LE
-0.895
kcal/mol/HA
Fit Quality
-8.55
FQ (Leeson)
HAC
29
heavy atoms
MW
380
Da
LogP
4.32
cLogP
Final rank
1.8355
rank score
Inter norm
-1.123
normalised
Contacts
16
H-bonds 11
Strain ΔE
38.3 kcal/mol
SASA buried
73%
Lipo contact
79% BSA apolar/total
SASA unbound
623 Ų
Apolar buried
361 Ų

Interaction summary

HBA 6 HY 4 PI 4 CLASH 3

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. 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: permissive.
Name6FXSContacts16
PoseOpen native poseHB0
IFP residues
ARG140 ARG144 ASN106 HIS105 HIS141 ARG46 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49
Current overlap13Native recall0.81
Jaccard0.68RMSD-
HB strict6Strict recall0.50
HB same residue+role4HB role recall0.40
HB same residue4HB residue recall0.40

Protein summary

302 residues
Protein targetT12Atoms4598
Residues302Chains2
Residue summaryARG:576; ILE:456; VAL:448; GLU:360; ALA:340; LEU:304; TYR:252; HIS:204; PRO:196; THR:196; GLY:182; LYS:176; ASP:168; PHE:160; MET:153; SER:121

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:CSD72

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
418 1.6519417124966898 -1.13469 -32.3302 9 21 0 0.00 0.00 - no Open
399 1.8354677458848982 -1.12292 -25.9684 11 16 13 0.81 0.40 - no Current
385 2.0319683187008457 -1.26571 -36.7774 10 19 0 0.00 0.00 - no Open
475 2.2594311359412096 -1.03515 -31.9582 4 17 0 0.00 0.00 - no Open
428 2.5921100555360286 -0.755558 -24.5417 6 11 0 0.00 0.00 - no Open
394 6.047368516924349 -0.921961 -23.0042 13 16 5 0.31 0.20 - 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 -25.968kcal/mol
Ligand efficiency (LE) -0.8955kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.548
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 380.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.32
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 38.28kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 143.29kcal/mol
Minimised FF energy 105.01kcal/mol

SASA & burial

✓ computed
SASA (unbound) 623.2Ų
Total solvent-accessible surface area of free ligand
BSA total 455.5Ų
Buried surface area upon binding
BSA apolar 361.0Ų
Hydrophobic contacts buried
BSA polar 94.5Ų
Polar contacts buried
Fraction buried 73.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2188.7Ų
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 2454.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 785.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)