FAIRMol

Z27666221

Pose ID 4608 Compound 2543 Pose 545

DB fairmolDocking 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 Z27666221
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
9.4 kcal/mol
Protein clashes
3
Internal clashes
5
Native overlap
contact recall 0.63, Jaccard 0.52, H-bond role recall 0.40
Burial
98%
Hydrophobic fit
89%
Reason: no major geometry red flags detected
3 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.319 kcal/mol/HA) ✓ Good fit quality (FQ -11.45) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (89%) ✗ Moderate strain (9.4 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (6) ✗ Internal clashes (6)
Score
-29.016
kcal/mol
LE
-1.319
kcal/mol/HA
Fit Quality
-11.45
FQ (Leeson)
HAC
22
heavy atoms
MW
290
Da
LogP
3.23
cLogP
Final rank
0.3346
rank score
Inter norm
-1.383
normalised
Contacts
16
H-bonds 6
Strain ΔE
9.4 kcal/mol
SASA buried
98%
Lipo contact
89% BSA apolar/total
SASA unbound
530 Ų
Apolar buried
464 Ų

Interaction summary

HBD 2 HY 7 PI 4 CLASH 5

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

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 overlap12Native recall0.63
Jaccard0.52RMSD-
HB strict1Strict recall0.17
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
545 0.3346074425756442 -1.38266 -29.0158 6 16 12 0.63 0.40 - no Current
542 1.5093887402776818 -1.11694 -23.8495 2 15 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 -29.016kcal/mol
Ligand efficiency (LE) -1.3189kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.451
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 22HA

Physicochemical properties

Molecular weight 290.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.23
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 9.35kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 21.55kcal/mol
Minimised FF energy 12.20kcal/mol

SASA & burial

✓ computed
SASA (unbound) 530.2Ų
Total solvent-accessible surface area of free ligand
BSA total 519.8Ų
Buried surface area upon binding
BSA apolar 464.4Ų
Hydrophobic contacts buried
BSA polar 55.4Ų
Polar contacts buried
Fraction buried 98.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1600.8Ų
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 921.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)