FAIRMol

Z27614566

Pose ID 4427 Compound 2774 Pose 364

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 Z27614566
PDB6RX6

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
22.1 kcal/mol
Protein clashes
2
Internal clashes
3
Native overlap
contact recall 0.68, Jaccard 0.62, H-bond role recall 0.00
Burial
80%
Hydrophobic fit
78%
Reason: no major geometry red flags detected
2 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.063 kcal/mol/HA) ✓ Good fit quality (FQ -10.04) ✓ Good H-bonds (3 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ High strain energy (22.1 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (4) ✗ Many internal clashes (10)
Score
-29.775
kcal/mol
LE
-1.063
kcal/mol/HA
Fit Quality
-10.04
FQ (Leeson)
HAC
28
heavy atoms
MW
395
Da
LogP
2.35
cLogP
Strain ΔE
22.1 kcal/mol
SASA buried
80%
Lipo contact
78% BSA apolar/total
SASA unbound
634 Ų
Apolar buried
396 Ų

Interaction summary

HB 3 HY 24 PI 4 CLASH 3
Final rank0.719Score-29.775
Inter norm-1.081Intra norm0.018
Top1000noExcludedno
Contacts15H-bonds3
Artifact reasongeometry warning; 10 clashes; 4 protein contact clashes; 1 cofactor-context clash; moderate strain Δ 22.1
Residues
ARG14 ASP161 CYS168 GLU217 LEU208 LEU209 LYS220 MET213 NAP301 PHE171 PHE97 PRO210 SER207 TRP221 TYR174

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 overlap13Native recall0.68
Jaccard0.62RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
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
364 0.7188967715079656 -1.08145 -29.7747 3 15 13 0.68 0.00 - no Current
344 2.0081381927924085 -1.18177 -33.191 7 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 -29.775kcal/mol
Ligand efficiency (LE) -1.0634kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.039
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 395.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.35
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 22.05kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 15.35kcal/mol
Minimised FF energy -6.70kcal/mol

SASA & burial

✓ computed
SASA (unbound) 633.5Ų
Total solvent-accessible surface area of free ligand
BSA total 509.7Ų
Buried surface area upon binding
BSA apolar 395.7Ų
Hydrophobic contacts buried
BSA polar 114.0Ų
Polar contacts buried
Fraction buried 80.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 77.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1618.0Ų
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 932.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)