FAIRMol

TC271

Pose ID 4973 Compound 1818 Pose 232

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 TC271
PDB6RX6

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising and worth follow-up
Binding strong Geometry medium Native strong SASA done
Strain ΔE
19.7 kcal/mol
Protein clashes
5
Internal clashes
5
Native overlap
contact recall 0.58, Jaccard 0.46, H-bond role recall 0.40
Burial
98%
Hydrophobic fit
77%
Reason: no major geometry red flags detected
5 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.354 kcal/mol/HA) ✓ Good fit quality (FQ -11.75) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (77%) ✗ Moderate strain (19.7 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-29.782
kcal/mol
LE
-1.354
kcal/mol/HA
Fit Quality
-11.75
FQ (Leeson)
HAC
22
heavy atoms
MW
297
Da
LogP
2.30
cLogP
Strain ΔE
19.7 kcal/mol
SASA buried
98%
Lipo contact
77% BSA apolar/total
SASA unbound
530 Ų
Apolar buried
399 Ų

Interaction summary

HB 7 HY 21 PI 4 CLASH 5

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 rank1.865Score-29.782
Inter norm-1.477Intra norm0.123
Top1000noExcludedno
Contacts16H-bonds7
Artifact reasongeometry warning; 9 clashes; 1 protein clash; 1 severe cofactor-context clash
Residues
ARG14 ASN175 ASP161 CYS168 GLN166 GLY205 LEU208 MET163 NAP301 PHE171 PHE97 PRO167 SER95 TYR174 VAL164 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
Jaccard0.46RMSD-
HB strict3Strict recall0.50
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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
220 0.3651391185133525 -1.45139 -23.7405 8 14 11 0.58 0.40 - no Open
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 Current
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 -29.782kcal/mol
Ligand efficiency (LE) -1.3537kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.753
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) 19.67kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 48.69kcal/mol
Minimised FF energy 29.02kcal/mol

SASA & burial

✓ computed
SASA (unbound) 529.9Ų
Total solvent-accessible surface area of free ligand
BSA total 520.8Ų
Buried surface area upon binding
BSA apolar 398.8Ų
Hydrophobic contacts buried
BSA polar 122.0Ų
Polar contacts buried
Fraction buried 98.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 76.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1536.1Ų
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 922.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)