FAIRMol

OHD_TB2020_44

Pose ID 4105 Compound 2081 Pose 42

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_TB2020_44
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 strong SASA done
Strain ΔE
44.6 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.58, Jaccard 0.48, H-bond role recall 0.00
Burial
72%
Hydrophobic fit
92%
Reason: strain 44.6 kcal/mol
strain ΔE 44.6 kcal/mol 1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.753 kcal/mol/HA) ✓ Good fit quality (FQ -7.76) ✓ Good H-bonds (3 bonds) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (92%) ✗ Extreme strain energy (44.6 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (15)
Score
-28.602
kcal/mol
LE
-0.753
kcal/mol/HA
Fit Quality
-7.76
FQ (Leeson)
HAC
38
heavy atoms
MW
508
Da
LogP
2.47
cLogP
Strain ΔE
44.6 kcal/mol
SASA buried
72%
Lipo contact
92% BSA apolar/total
SASA unbound
872 Ų
Apolar buried
578 Ų

Interaction summary

HB 3 HY 24 PI 4 CLASH 1

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 rank2.441Score-28.602
Inter norm-0.855Intra norm0.103
Top1000noExcludedno
Contacts15H-bonds3
Artifact reasongeometry warning; 15 clashes; 1 protein clash; high strain Δ 44.6
Residues
ALA212 ARG14 CYS168 GLU217 GLY214 LEU208 LEU209 MET169 MET213 NAP301 PHE171 PHE97 PRO210 TRP221 TYR174

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
Jaccard0.48RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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
55 1.1309237672521895 -0.946794 -33.107 12 19 15 0.79 0.60 - no Open
38 1.6874363656426687 -0.757076 -26.2584 4 13 0 0.00 0.00 - no Open
45 1.7705913919027843 -0.7294 -25.5678 2 19 0 0.00 0.00 - no Open
42 2.4406726172543074 -0.85533 -28.6024 3 15 11 0.58 0.00 - no Current
37 3.018866426350658 -0.702682 -22.4896 2 17 0 0.00 0.00 - no Open
55 3.3356888117292276 -0.585751 -14.2121 6 17 0 0.00 0.00 - no Open
41 3.7801042212216704 -0.707759 -21.7123 9 13 0 0.00 0.00 - no Open
56 4.128074887285989 -0.563627 -17.0404 6 12 0 0.00 0.00 - no Open
24 4.331773379453936 -0.787254 -25.522 7 20 0 0.00 0.00 - no Open
25 4.946037833206474 -0.822365 -28.2458 9 22 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 -28.602kcal/mol
Ligand efficiency (LE) -0.7527kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.760
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 38HA

Physicochemical properties

Molecular weight 507.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.47
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 44.61kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 132.76kcal/mol
Minimised FF energy 88.15kcal/mol

SASA & burial

✓ computed
SASA (unbound) 871.8Ų
Total solvent-accessible surface area of free ligand
BSA total 630.5Ų
Buried surface area upon binding
BSA apolar 578.2Ų
Hydrophobic contacts buried
BSA polar 52.2Ų
Polar contacts buried
Fraction buried 72.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 91.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1904.8Ų
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 952.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)