FAIRMol

Z49724748

Pose ID 7993 Compound 42 Pose 541

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 Z49724748
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
47.1 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.94, Jaccard 0.79, H-bond role recall 0.50
Burial
79%
Hydrophobic fit
74%
Reason: strain 47.1 kcal/mol
strain ΔE 47.1 kcal/mol 3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.021 kcal/mol/HA) ✓ Good fit quality (FQ -9.28) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (79% SASA buried) ✓ Lipophilic contacts well-matched (74%) ✗ Extreme strain energy (47.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-25.530
kcal/mol
LE
-1.021
kcal/mol/HA
Fit Quality
-9.28
FQ (Leeson)
HAC
25
heavy atoms
MW
425
Da
LogP
4.27
cLogP
Strain ΔE
47.1 kcal/mol
SASA buried
79%
Lipo contact
74% BSA apolar/total
SASA unbound
597 Ų
Apolar buried
348 Ų

Interaction summary

HB 10 HY 12 PI 2 CLASH 3

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

Final rank3.579Score-25.530
Inter norm-1.130Intra norm0.107
Top1000noExcludedno
Contacts18H-bonds10
Artifact reasongeometry warning; 10 clashes; 2 protein clashes; high strain Δ 47.1
Residues
ARG140 ARG144 ASN106 HIS105 HIS141 MET101 TYR97 ARG116 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6FXSContacts16
PoseOpen native poseHB0
IFP residues
ARG140 ARG144 ASN106 HIS105 HIS141 ARG46 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49
Current overlap15Native recall0.94
Jaccard0.79RMSD-
HB strict5Strict recall0.42
HB same residue+role5HB role recall0.50
HB same residue6HB residue recall0.60

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
535 0.5554742205459879 -1.57398 -38.7698 15 16 0 0.00 0.00 - no Open
542 0.6301361565626356 -1.41362 -35.0467 13 20 0 0.00 0.00 - no Open
576 0.6491852433386276 -1.04323 -28.2743 6 16 0 0.00 0.00 - no Open
560 1.7385138815859185 -1.20275 -30.8924 10 14 0 0.00 0.00 - no Open
573 1.9408338434310477 -0.934882 -24.3666 8 14 0 0.00 0.00 - no Open
546 2.12496165439863 -1.12048 -28.9632 5 14 0 0.00 0.00 - no Open
573 2.1723358672917747 -0.917446 -22.622 4 14 0 0.00 0.00 - no Open
538 2.531466557515543 -1.11611 -27.7407 6 11 0 0.00 0.00 - no Open
551 3.031535954686285 -1.17336 -28.1011 5 18 0 0.00 0.00 - no Open
560 3.1524960599292062 -0.864105 -19.5566 5 10 0 0.00 0.00 - no Open
541 3.5786835219571276 -1.12988 -25.5305 10 18 15 0.94 0.50 - no Current
558 4.774003563882817 -1.42174 -34.3602 11 23 0 0.00 0.00 - no Open
567 5.672682983004134 -1.08344 -23.3257 13 17 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 -25.530kcal/mol
Ligand efficiency (LE) -1.0212kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.284
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 25HA

Physicochemical properties

Molecular weight 425.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.27
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 47.13kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 120.91kcal/mol
Minimised FF energy 73.78kcal/mol

SASA & burial

✓ computed
SASA (unbound) 596.5Ų
Total solvent-accessible surface area of free ligand
BSA total 472.1Ų
Buried surface area upon binding
BSA apolar 347.8Ų
Hydrophobic contacts buried
BSA polar 124.3Ų
Polar contacts buried
Fraction buried 79.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 73.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2117.1Ų
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 809.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)