FAIRMol

Z44866976

Pose ID 4714 Compound 940 Pose 651

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 Z44866976
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
52.1 kcal/mol
Protein clashes
1
Internal clashes
3
Native overlap
contact recall 0.84, Jaccard 0.76, H-bond role recall 0.60
Burial
87%
Hydrophobic fit
70%
Reason: strain 52.1 kcal/mol
strain ΔE 52.1 kcal/mol 1 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.399 kcal/mol/HA) ✓ Good fit quality (FQ -13.63) ✓ Strong H-bond network (15 bonds) ✓ Deep burial (87% SASA buried) ✓ Lipophilic contacts well-matched (70%) ✗ Extreme strain energy (52.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-43.358
kcal/mol
LE
-1.399
kcal/mol/HA
Fit Quality
-13.63
FQ (Leeson)
HAC
31
heavy atoms
MW
449
Da
LogP
1.75
cLogP
Strain ΔE
52.1 kcal/mol
SASA buried
87%
Lipo contact
70% BSA apolar/total
SASA unbound
685 Ų
Apolar buried
421 Ų

Interaction summary

HB 15 HY 24 PI 3 CLASH 3
Final rank1.416Score-43.358
Inter norm-1.403Intra norm0.004
Top1000noExcludedno
Contacts18H-bonds15
Artifact reasongeometry warning; 10 clashes; 1 protein clash; 1 severe cofactor-context clash; high strain Δ 52.1
Residues
ARG14 ASP161 CYS168 GLU217 LEU208 LEU209 LYS178 LYS220 MET213 NAP301 PHE171 PHE97 PRO210 SER207 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 overlap16Native recall0.84
Jaccard0.76RMSD-
HB strict4Strict recall0.67
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.60

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
633 0.05829920103739172 -1.0551 -30.9043 6 13 11 0.58 0.20 - no Open
651 1.4156605545140337 -1.40297 -43.3583 15 18 16 0.84 0.60 - no Current
631 2.4700797108431822 -0.817046 -22.4274 2 16 0 0.00 0.00 - no Open
651 2.6241796803607684 -0.861067 -23.541 5 15 0 0.00 0.00 - no Open
641 2.867756166472061 -0.918058 -26.7937 7 12 0 0.00 0.00 - no Open
637 3.275743878737262 -0.87096 -22.8257 9 13 0 0.00 0.00 - no Open
650 3.2986306516203525 -1.05149 -29.1371 15 12 0 0.00 0.00 - no Open
628 4.031122152407257 -0.781668 -24.4719 5 16 0 0.00 0.00 - no Open
645 4.500872485938668 -0.819792 -23.1151 6 16 0 0.00 0.00 - no Open
651 4.7722691848813374 -1.01921 -26.299 12 18 0 0.00 0.00 - no Open
640 4.779003355861554 -1.06227 -31.24 16 18 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 -43.358kcal/mol
Ligand efficiency (LE) -1.3987kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -13.626
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 449.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.75
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 52.13kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 84.52kcal/mol
Minimised FF energy 32.39kcal/mol

SASA & burial

✓ computed
SASA (unbound) 685.1Ų
Total solvent-accessible surface area of free ligand
BSA total 598.3Ų
Buried surface area upon binding
BSA apolar 421.5Ų
Hydrophobic contacts buried
BSA polar 176.8Ų
Polar contacts buried
Fraction buried 87.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 70.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1620.5Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 906.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)