FAIRMol

MK16

Pose ID 3626 Compound 365 Pose 240

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T06
T. brucei DHFR T. brucei
Ligand MK16
PDB8RHT

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
17.3 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.67, Jaccard 0.61, H-bond role recall 0.00
Burial
93%
Hydrophobic fit
84%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.641 kcal/mol/HA) ✓ Good fit quality (FQ -6.12) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (93% SASA buried) ✓ Lipophilic contacts well-matched (84%) ✗ Moderate strain (17.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-18.603
kcal/mol
LE
-0.641
kcal/mol/HA
Fit Quality
-6.12
FQ (Leeson)
HAC
29
heavy atoms
MW
397
Da
LogP
3.64
cLogP
Strain ΔE
17.3 kcal/mol
SASA buried
93%
Lipo contact
84% BSA apolar/total
SASA unbound
677 Ų
Apolar buried
528 Ų

Interaction summary

HB 7 HY 24 PI 2 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 rank3.282Score-18.603
Inter norm-0.787Intra norm0.110
Top1000noExcludedno
Contacts16H-bonds7
Artifact reasongeometry warning; 13 clashes; 1 protein clash
Residues
ALA34 ARG59 ASP54 GLN56 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE58 PHE94 PRO91 TYR166 VAL32 VAL33

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name8RHTContacts21
PoseOpen native poseHB0
IFP residues
ALA34 ASP54 HIS182 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE233 PHE58 PHE94 PRO91 SER89 THR184 THR86 TRP49 TYR166 TYR57 VAL32 VAL33
Current overlap14Native recall0.67
Jaccard0.61RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue1HB residue recall0.25

Protein summary

223 residues
Protein targetT06Atoms3452
Residues223Chains1
Residue summaryARG:408; VAL:352; LYS:308; LEU:304; PRO:238; ILE:209; GLU:195; THR:182; SER:176; ALA:160; PHE:140; ASN:126; GLY:126; ASP:108; GLN:85; NDP:74

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:NDP301

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
218 0.8702932048363431 -0.908629 -24.464 4 18 1 0.05 0.00 - no Open
299 2.0379983094372447 -0.947945 -23.6822 3 18 0 0.00 0.00 - no Open
317 2.1527347432726276 -0.941543 -26.1251 3 17 0 0.00 0.00 - no Open
240 2.2587325616107607 -0.832091 -21.6042 4 13 0 0.00 0.00 - no Open
240 3.2818274910563994 -0.786521 -18.603 7 16 14 0.67 0.00 - no Current
177 3.5557639252536166 -1.14994 -28.0313 10 21 0 0.00 0.00 - no Open
260 3.6013232851727364 -0.851461 -20.5074 10 18 0 0.00 0.00 - no Open
220 4.999612194010174 -1.09022 -27.133 11 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 -18.603kcal/mol
Ligand efficiency (LE) -0.6415kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.123
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 397.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.64
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 17.30kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 33.67kcal/mol
Minimised FF energy 16.38kcal/mol

SASA & burial

✓ computed
SASA (unbound) 677.0Ų
Total solvent-accessible surface area of free ligand
BSA total 631.6Ų
Buried surface area upon binding
BSA apolar 528.0Ų
Hydrophobic contacts buried
BSA polar 103.5Ų
Polar contacts buried
Fraction buried 93.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 83.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1786.1Ų
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 1808.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 588.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)