FAIRMol

TC271

Pose ID 4283 Compound 1818 Pose 220

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 TC271
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 high Native strong SASA done
Strain ΔE
22.5 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.58, Jaccard 0.50, H-bond role recall 0.40
Burial
98%
Hydrophobic fit
76%
Reason: no major geometry red flags detected
2 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.079 kcal/mol/HA) ✓ Good fit quality (FQ -9.37) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ High strain energy (22.5 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (6) ✗ Internal clashes (8)
Score
-23.741
kcal/mol
LE
-1.079
kcal/mol/HA
Fit Quality
-9.37
FQ (Leeson)
HAC
22
heavy atoms
MW
297
Da
LogP
2.30
cLogP
Strain ΔE
22.5 kcal/mol
SASA buried
98%
Lipo contact
76% BSA apolar/total
SASA unbound
549 Ų
Apolar buried
409 Ų

Interaction summary

HB 8 HY 24 PI 4 CLASH 2

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

Final rank0.365Score-23.741
Inter norm-1.451Intra norm0.372
Top1000noExcludedno
Contacts14H-bonds8
Artifact reasongeometry warning; 8 clashes; 6 protein contact clashes; 1 severe cofactor-context clash; moderate strain Δ 22.5
Residues
ARG14 ASN175 ASP161 CYS168 LEU208 LEU209 MET163 NAP301 PHE171 PHE97 PRO167 PRO210 TYR174 VAL206

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 overlap11Native recall0.58
Jaccard0.50RMSD-
HB strict3Strict recall0.50
HB same residue+role2HB role recall0.40
HB same residue3HB residue recall0.60

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
220 0.3651391185133525 -1.45139 -23.7405 8 14 11 0.58 0.40 - no Current
192 0.4571207130802301 -1.18119 -19.2496 10 16 0 0.00 0.00 - no Open
237 1.5063260990891212 -1.13516 -23.1709 4 15 0 0.00 0.00 - no Open
247 1.5181578036895516 -1.089 -19.0581 9 17 0 0.00 0.00 - no Open
243 1.7178078774494703 -1.28667 -20.7882 8 13 0 0.00 0.00 - no Open
232 1.8651070569406785 -1.47707 -29.7815 7 16 11 0.58 0.40 - no Open
198 2.1445626433417684 -1.42852 -28.7517 8 19 0 0.00 0.00 - no Open
213 2.3624501248232654 -1.20095 -22.4306 10 15 0 0.00 0.00 - no Open
155 2.5177967963534 -1.60533 -28.0634 11 18 0 0.00 0.00 - no Open
242 2.61548570124989 -0.940053 -20.2644 4 9 0 0.00 0.00 - no Open
165 2.843997714984992 -1.28647 -22.6883 12 13 0 0.00 0.00 - no Open
153 3.038012358487256 -1.13257 -24.4214 10 15 0 0.00 0.00 - no Open
223 4.2149665993990615 -1.33738 -26.7053 8 11 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 -23.741kcal/mol
Ligand efficiency (LE) -1.0791kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.369
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 22HA

Physicochemical properties

Molecular weight 297.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.30
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 22.53kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 50.60kcal/mol
Minimised FF energy 28.07kcal/mol

SASA & burial

✓ computed
SASA (unbound) 548.6Ų
Total solvent-accessible surface area of free ligand
BSA total 536.2Ų
Buried surface area upon binding
BSA apolar 408.6Ų
Hydrophobic contacts buried
BSA polar 127.6Ų
Polar contacts buried
Fraction buried 97.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 76.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1553.6Ų
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 918.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)