FAIRMol

ulfkktlib_624

Pose ID 4220 Compound 2619 Pose 157

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 ulfkktlib_624
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
58.8 kcal/mol
Protein clashes
5
Internal clashes
6
Native overlap
contact recall 0.74, Jaccard 0.61, H-bond role recall 0.60
Burial
98%
Hydrophobic fit
77%
Reason: 6 internal clashes, strain 58.8 kcal/mol
strain ΔE 58.8 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 (-1.150 kcal/mol/HA) ✓ Good fit quality (FQ -10.86) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (77%) ✗ Extreme strain energy (58.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-32.209
kcal/mol
LE
-1.150
kcal/mol/HA
Fit Quality
-10.86
FQ (Leeson)
HAC
28
heavy atoms
MW
380
Da
LogP
0.68
cLogP
Strain ΔE
58.8 kcal/mol
SASA buried
98%
Lipo contact
77% BSA apolar/total
SASA unbound
633 Ų
Apolar buried
480 Ų

Interaction summary

HB 9 HY 24 PI 3 CLASH 6

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 rank2.930Score-32.209
Inter norm-1.152Intra norm0.001
Top1000noExcludedno
Contacts18H-bonds9
Artifact reasongeometry warning; 13 clashes; 1 protein clash; 1 severe cofactor-context clash; high strain Δ 58.8
Residues
ARG14 ASN175 ASP161 CYS168 LEU208 LEU209 MET163 MET213 NAP301 PHE171 PHE97 PRO167 PRO210 SER207 TRP221 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 overlap14Native recall0.74
Jaccard0.61RMSD-
HB strict4Strict recall0.67
HB same residue+role3HB role recall0.60
HB same residue4HB residue recall0.80

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
170 2.4504323739469225 -0.867245 -27.5195 3 17 0 0.00 0.00 - no Open
157 2.92982801684762 -1.15162 -32.2092 9 18 14 0.74 0.60 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -32.209kcal/mol
Ligand efficiency (LE) -1.1503kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.859
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 380.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.68
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 58.81kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 61.00kcal/mol
Minimised FF energy 2.19kcal/mol

SASA & burial

✓ computed
SASA (unbound) 633.1Ų
Total solvent-accessible surface area of free ligand
BSA total 623.2Ų
Buried surface area upon binding
BSA apolar 479.6Ų
Hydrophobic contacts buried
BSA polar 143.6Ų
Polar contacts buried
Fraction buried 98.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 77.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1622.5Ų
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 914.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)