FAIRMol

TC227

Pose ID 4972 Compound 1324 Pose 231

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T08
T. brucei PTR1 T. brucei
Ligand TC227
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
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
41.4 kcal/mol
Protein clashes
5
Internal clashes
5
Native overlap
contact recall 0.63, Jaccard 0.52, H-bond role recall 0.20
Burial
83%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
5 protein-contact clashes 5 intramolecular clashes 39% of hydrophobic surface appears solvent-exposed (9/23 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.805 kcal/mol/HA) ✓ Good fit quality (FQ -8.12) ✓ Good H-bonds (4 bonds) ✓ Deep burial (83% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ Extreme strain energy (41.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (16)
Score
-28.173
kcal/mol
LE
-0.805
kcal/mol/HA
Fit Quality
-8.12
FQ (Leeson)
HAC
35
heavy atoms
MW
480
Da
LogP
0.73
cLogP
Final rank
3.3592
rank score
Inter norm
-0.924
normalised
Contacts
16
H-bonds 9
Strain ΔE
41.4 kcal/mol
SASA buried
83%
Lipo contact
82% BSA apolar/total
SASA unbound
765 Ų
Apolar buried
518 Ų

Interaction summary

HBD 1 HBA 3 HY 8 PI 3 CLASH 5

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 3.

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: permissive.
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+role1HB role recall0.20
HB same residue3HB residue recall0.60

Protein summary

258 residues
Protein targetT08Atoms3881
Residues258Chains2
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
217 1.3512816325645542 -0.920357 -27.0109 11 17 13 0.68 0.40 - no Open
327 2.562616059620716 -0.697603 -19.8611 7 15 0 0.00 0.00 - no Open
264 2.6884770570826144 -0.757765 -24.6339 3 11 0 0.00 0.00 - no Open
195 3.2904397737734246 -0.883666 -31.8781 9 18 0 0.00 0.00 - no Open
231 3.359211608723208 -0.923712 -28.1727 9 16 12 0.63 0.20 - no Current
204 3.710670948551887 -0.794939 -28.899 12 18 0 0.00 0.00 - no Open
236 3.7529471976223454 -0.658299 -21.2653 7 13 0 0.00 0.00 - no Open
160 4.525021538507883 -0.794752 -29.6473 11 18 0 0.00 0.00 - no Open
148 5.360865640556601 -0.707003 -22.203 10 16 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 -28.173kcal/mol
Ligand efficiency (LE) -0.8049kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.119
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 35HA

Physicochemical properties

Molecular weight 480.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.73
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 41.39kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -30.07kcal/mol
Minimised FF energy -71.46kcal/mol

SASA & burial

✓ computed
SASA (unbound) 765.0Ų
Total solvent-accessible surface area of free ligand
BSA total 632.5Ų
Buried surface area upon binding
BSA apolar 517.9Ų
Hydrophobic contacts buried
BSA polar 114.6Ų
Polar contacts buried
Fraction buried 82.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1730.8Ų
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 937.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)