FAIRMol

Z25778757

Pose ID 4644 Compound 2755 Pose 581

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 Z25778757
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
53.4 kcal/mol
Protein clashes
0
Internal clashes
10
Native overlap
contact recall 0.68, Jaccard 0.54, H-bond role recall 0.40
Burial
86%
Hydrophobic fit
91%
Reason: 10 internal clashes, strain 53.4 kcal/mol
strain ΔE 53.4 kcal/mol 10 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.621 kcal/mol/HA) ✓ Good fit quality (FQ -6.26) ✓ Deep burial (86% SASA buried) ✓ Lipophilic contacts well-matched (91%) ✗ Extreme strain energy (53.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-21.734
kcal/mol
LE
-0.621
kcal/mol/HA
Fit Quality
-6.26
FQ (Leeson)
HAC
35
heavy atoms
MW
471
Da
LogP
4.43
cLogP
Final rank
0.5279
rank score
Inter norm
-0.923
normalised
Contacts
18
H-bonds 3
Strain ΔE
53.4 kcal/mol
SASA buried
86%
Lipo contact
91% BSA apolar/total
SASA unbound
817 Ų
Apolar buried
642 Ų

Interaction summary

HBD 1 HBA 1 HY 10 PI 5 CLASH 0

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.

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 overlap13Native recall0.68
Jaccard0.54RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
581 0.5279466170560568 -0.92298 -21.7341 3 18 13 0.68 0.40 - no Current
584 1.6032710136530173 -0.671895 -22.2796 5 16 0 0.00 0.00 - no Open
580 2.233058305090961 -0.978889 -25.9835 3 16 11 0.58 0.40 - no Open
619 2.798593001434877 -0.91104 -35.0462 4 16 0 0.00 0.00 - no Open
600 3.5461906514861314 -0.721784 -23.941 4 14 0 0.00 0.00 - no Open
598 3.9640623284702365 -0.540965 -15.9625 3 12 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 -21.734kcal/mol
Ligand efficiency (LE) -0.6210kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.263
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 35HA

Physicochemical properties

Molecular weight 470.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.43
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 53.45kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 140.57kcal/mol
Minimised FF energy 87.13kcal/mol

SASA & burial

✓ computed
SASA (unbound) 817.5Ų
Total solvent-accessible surface area of free ligand
BSA total 702.5Ų
Buried surface area upon binding
BSA apolar 642.2Ų
Hydrophobic contacts buried
BSA polar 60.2Ų
Polar contacts buried
Fraction buried 85.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 91.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1896.1Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 912.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)