FAIRMol

Z19222909

Pose ID 10127 Compound 436 Pose 641

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T15
T. brucei TR (Dimer cleft site) T. brucei Dimer cleft site
Ligand Z19222909
PDB9IFF

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Likely artefact or unreliable pose
Binding strong Geometry high Native mixed SASA done
Strain ΔE
24.7 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.46, Jaccard 0.32
Burial
62%
Hydrophobic fit
83%
Reason: no major geometry red flags detected
2 protein-contact clashes 74% of hydrophobic surface is solvent-exposed (20/27 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Daphnia EC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Algae IC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Bioaccum.
vB — Very bioaccumulative (BCF>5000)
Persistent
Yes
ADMET alerts (in-silico)
hERG High Ames Clear DILI Risk
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.603 kcal/mol/HA) ✓ Good fit quality (FQ -5.99) ✓ Strong H-bond network (6 bonds) ✓ Good burial (62% SASA buried) ✓ Lipophilic contacts well-matched (83%) ✗ High strain energy (24.7 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (10) ✗ Many internal clashes (15)
Score
-19.906
kcal/mol
LE
-0.603
kcal/mol/HA
Fit Quality
-5.99
FQ (Leeson)
HAC
33
heavy atoms
MW
451
Da
LogP
6.36
cLogP
Final rank
2.5752
rank score
Inter norm
-0.730
normalised
Contacts
12
H-bonds 7
Strain ΔE
24.7 kcal/mol
SASA buried
62%
Lipo contact
83% BSA apolar/total
SASA unbound
739 Ų
Apolar buried
382 Ų

Interaction summary

HBD 1 HBA 5 HY 4 PI 0 CLASH 2

HBD/HBA · H-bonds (geometric)

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

PI · π–π interactions

No pi · π–π interactions detected for this pose.

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.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap6Native recall0.46
Jaccard0.32RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

489 residues
Protein targetT15Atoms7420
Residues489Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:264; MET:204

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
634 0.7703295841755433 -1.01228 -30.485 3 17 0 0.00 - - no Open
619 0.9227104539675254 -0.988832 -29.8563 3 18 0 0.00 - - no Open
635 0.9872537622581262 -0.909874 -26.5051 1 17 0 0.00 - - no Open
624 1.3874062123717454 -0.912299 -28.609 1 18 0 0.00 - - no Open
623 2.5042832255124376 -0.78944 -24.6851 3 17 0 0.00 - - no Open
641 2.575160669811322 -0.729551 -19.9056 7 12 6 0.46 - - no Current
624 3.143187244987514 -0.689014 -19.0993 3 12 0 0.00 - - no Open
637 3.1469015228773753 -0.653269 -16.8113 4 9 0 0.00 - - no Open
623 3.788589440580992 -0.75815 -19.7132 1 18 0 0.00 - - no Open
633 4.551784139291988 -0.853444 -26.9236 7 19 0 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 -19.906kcal/mol
Ligand efficiency (LE) -0.6032kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.985
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 450.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 6.36
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 24.73kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 137.98kcal/mol
Minimised FF energy 113.24kcal/mol

SASA & burial

✓ computed
SASA (unbound) 738.5Ų
Total solvent-accessible surface area of free ligand
BSA total 457.8Ų
Buried surface area upon binding
BSA apolar 381.8Ų
Hydrophobic contacts buried
BSA polar 76.0Ų
Polar contacts buried
Fraction buried 62.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 83.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3089.5Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1565.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)