FAIRMol

OHD_TB2021_35

Pose ID 4114 Compound 1235 Pose 51

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 OHD_TB2021_35
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
Promising but geometrically suspicious
Binding strong Geometry low Native mixed SASA done
Strain ΔE
43.2 kcal/mol
Protein clashes
5
Internal clashes
6
Native overlap
contact recall 0.53, Jaccard 0.42, H-bond role recall 0.40
Burial
98%
Hydrophobic fit
68%
Reason: 6 internal clashes, strain 43.2 kcal/mol
strain ΔE 43.2 kcal/mol 5 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.270 kcal/mol/HA) ✓ Good fit quality (FQ -10.63) ✓ Good H-bonds (5 bonds) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (68%) ✗ Extreme strain energy (43.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (5)
Score
-25.399
kcal/mol
LE
-1.270
kcal/mol/HA
Fit Quality
-10.63
FQ (Leeson)
HAC
20
heavy atoms
MW
301
Da
LogP
0.51
cLogP
Final rank
1.7407
rank score
Inter norm
-1.551
normalised
Contacts
15
H-bonds 14
Strain ΔE
43.2 kcal/mol
SASA buried
98%
Lipo contact
68% BSA apolar/total
SASA unbound
519 Ų
Apolar buried
349 Ų

Interaction summary

HBD 3 HBA 2 HY 4 PI 2 CLASH 6

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 4.

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 overlap10Native recall0.53
Jaccard0.42RMSD-
HB strict2Strict recall0.33
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
51 1.7406734057768396 -1.55099 -25.3992 14 15 10 0.53 0.40 - no Current
63 2.0699265523486603 -1.3784 -25.6176 12 16 0 0.00 0.00 - no Open
30 3.037310309051502 -1.6924 -29.4294 12 19 0 0.00 0.00 - no Open
60 3.9346894583368592 -1.18087 -19.1811 9 12 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 -25.399kcal/mol
Ligand efficiency (LE) -1.2700kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.627
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 20HA

Physicochemical properties

Molecular weight 301.2Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.51
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 43.21kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 16.52kcal/mol
Minimised FF energy -26.69kcal/mol

SASA & burial

✓ computed
SASA (unbound) 518.9Ų
Total solvent-accessible surface area of free ligand
BSA total 510.1Ų
Buried surface area upon binding
BSA apolar 348.7Ų
Hydrophobic contacts buried
BSA polar 161.3Ų
Polar contacts buried
Fraction buried 98.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 68.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1482.3Ų
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 922.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)