FAIRMol

ulfkktlib_975

Pose ID 4937 Compound 23 Pose 196

DB SELECTIONDocking 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 ulfkktlib_975
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
11.0 kcal/mol
Protein clashes
0
Internal clashes
2
Native overlap
contact recall 0.58, Jaccard 0.48, H-bond role recall 0.00
Burial
98%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.458 kcal/mol/HA) ✓ Good fit quality (FQ -12.87) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ Moderate strain (11.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-33.541
kcal/mol
LE
-1.458
kcal/mol/HA
Fit Quality
-12.87
FQ (Leeson)
HAC
23
heavy atoms
MW
313
Da
LogP
4.92
cLogP
Strain ΔE
11.0 kcal/mol
SASA buried
98%
Lipo contact
82% BSA apolar/total
SASA unbound
544 Ų
Apolar buried
434 Ų

Interaction summary

HB 1 HY 24 PI 4 CLASH 2
Final rank-0.091Score-33.541
Inter norm-1.417Intra norm-0.042
Top1000noExcludedno
Contacts15H-bonds1
Artifact reasongeometry warning; 10 clashes; 1 protein contact clash; 2 cofactor-context clashes
Residues
ARG14 ASN175 ASP161 CYS168 GLY205 LEU209 MET163 NAP301 PHE97 PRO167 SER207 TRP221 TYR174 VAL164 VAL206

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

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

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
196 -0.09129784545088215 -1.41659 -33.5409 1 15 11 0.58 0.00 - no Current
276 0.4221779857226626 -1.17972 -26.4315 2 16 0 0.00 0.00 - no Open
234 1.3950006973288718 -1.23773 -27.9298 2 16 0 0.00 0.00 - no Open
177 1.5110784718979842 -1.28616 -29.4076 2 17 0 0.00 0.00 - no Open
303 1.7107350648349646 -1.01387 -22.7081 4 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 -33.541kcal/mol
Ligand efficiency (LE) -1.4583kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -12.871
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 313.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.92
Lipinski: ≤ 5
Rotatable bonds 2

Conformational strain (MMFF94s)

Strain energy (ΔE) 11.03kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 65.59kcal/mol
Minimised FF energy 54.56kcal/mol

SASA & burial

✓ computed
SASA (unbound) 543.5Ų
Total solvent-accessible surface area of free ligand
BSA total 531.9Ų
Buried surface area upon binding
BSA apolar 433.5Ų
Hydrophobic contacts buried
BSA polar 98.4Ų
Polar contacts buried
Fraction buried 97.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1571.2Ų
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)