FAIRMol

Z1541638525

Pose ID 4679 Compound 124 Pose 616

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T07
T. brucei PTR1 T. brucei
Ligand Z1541638525
PDB6RX6

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
48.6 kcal/mol
Protein clashes
2
Internal clashes
4
Native overlap
contact recall 0.79, Jaccard 0.71, H-bond role recall 0.20
Burial
85%
Hydrophobic fit
82%
Reason: strain 48.6 kcal/mol
strain ΔE 48.6 kcal/mol 2 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.022 kcal/mol/HA) ✓ Good fit quality (FQ -9.96) ✓ Deep burial (85% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ Extreme strain energy (48.6 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-31.689
kcal/mol
LE
-1.022
kcal/mol/HA
Fit Quality
-9.96
FQ (Leeson)
HAC
31
heavy atoms
MW
439
Da
LogP
2.56
cLogP
Strain ΔE
48.6 kcal/mol
SASA buried
85%
Lipo contact
82% BSA apolar/total
SASA unbound
703 Ų
Apolar buried
489 Ų

Interaction summary

HB 2 HY 24 PI 6 CLASH 4
Final rank1.975Score-31.689
Inter norm-1.065Intra norm0.042
Top1000noExcludedno
Contacts17H-bonds2
Artifact reasongeometry warning; 12 clashes; 1 protein clash; 2 cofactor-context clashes; high strain Δ 48.6
Residues
ARG14 ASP161 CYS168 GLU217 GLY205 LEU208 LEU209 MET169 MET213 NAP301 PHE171 PHE97 PRO210 SER95 TRP221 TYR174 VAL206

Protein summary

275 residues
Protein targetT07Atoms3932
Residues275Chains3
Residue summaryLEU:437; VAL:433; ALA:361; ARG:288; ILE:266; GLU:210; LYS:198; SER:198; ASN:182; THR:154; GLN:153; PHE:140; PRO:140; TYR:126; GLY:112; HIS:103

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:NAP301

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
NameTbPTR1_cW_6RX6_ReadyContacts19
PoseOpen native poseHB0
IFP residues
ARG14 ASP161 CYS168 GLY205 LEU208 LEU209 LYS178 MET213 NAP301 PHE171 PHE97 PRO210 PRO99 SER207 SER95 TRP221 TYR174 TYR98 VAL206
Current overlap15Native recall0.79
Jaccard0.71RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.20

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
616 1.111496592088737 -0.884205 -22.6768 2 17 0 0.00 0.00 - no Open
616 1.9754339533636078 -1.0646 -31.6893 2 17 15 0.79 0.20 - no Current
629 2.3345254061255214 -0.812677 -16.2566 5 19 0 0.00 0.00 - no Open
603 2.3880621061810063 -1.0371 -29.7296 7 17 15 0.79 0.80 - no Open
613 2.817356113057871 -0.857551 -27.4261 7 22 0 0.00 0.00 - no Open
605 3.0308665069554115 -0.89006 -25.1977 5 17 0 0.00 0.00 - no Open
632 3.194601979500991 -0.797748 -24.2342 6 13 0 0.00 0.00 - no Open
627 3.6050960718855105 -0.815297 -22.2564 8 15 0 0.00 0.00 - no Open
614 3.664946195262811 -0.73012 -23.1809 4 14 0 0.00 0.00 - no Open
610 4.115100225847642 -0.852848 -21.8685 4 20 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 -31.689kcal/mol
Ligand efficiency (LE) -1.0222kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.959
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 438.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.56
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 48.64kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -56.27kcal/mol
Minimised FF energy -104.90kcal/mol

SASA & burial

✓ computed
SASA (unbound) 702.9Ų
Total solvent-accessible surface area of free ligand
BSA total 596.7Ų
Buried surface area upon binding
BSA apolar 489.2Ų
Hydrophobic contacts buried
BSA polar 107.5Ų
Polar contacts buried
Fraction buried 84.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1718.0Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 918.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)