FAIRMol

MK154

Pose ID 5645 Compound 2852 Pose 227

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T09
L. major DHFR-TS L. major
Ligand MK154

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
23.6 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.62, Jaccard 0.52, H-bond role recall 0.50
Burial
80%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
2 protein-contact clashes
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.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Risk
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.860 kcal/mol/HA) ✓ Good fit quality (FQ -8.54) ✓ Good H-bonds (4 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ High strain energy (23.6 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-28.388
kcal/mol
LE
-0.860
kcal/mol/HA
Fit Quality
-8.54
FQ (Leeson)
HAC
33
heavy atoms
MW
454
Da
LogP
4.80
cLogP
Final rank
3.5547
rank score
Inter norm
-0.929
normalised
Contacts
17
H-bonds 7
Strain ΔE
23.6 kcal/mol
SASA buried
80%
Lipo contact
82% BSA apolar/total
SASA unbound
788 Ų
Apolar buried
517 Ų

Interaction summary

HBD 2 HBA 2 HY 8 PI 3 CLASH 2

HBD/HBA · H-bonds (geometric)

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

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name3CL9Contacts21
PoseOpen native poseHB0
IFP residues
NDP301 ALA32 ARG97 ASP52 GLY157 ILE45 LEU94 LYS57 MET53 PHE55 PHE56 PHE91 PRO88 SER86 THR180 THR83 TYR162 VAL156 VAL30 VAL31 VAL87
Current overlap13Native recall0.62
Jaccard0.52RMSD-
HB strict3Strict recall0.43
HB same residue+role3HB role recall0.50
HB same residue3HB residue recall0.50

Protein summary

511 residues
Protein targetT09Atoms8170
Residues511Chains2
Residue summaryLEU:1064; ARG:840; LYS:572; GLU:570; VAL:528; PHE:460; ILE:456; ALA:440; PRO:420; THR:406; TYR:357; ASP:312; GLN:289; ASN:238; SER:231; GLY:224

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
257 1.4920287375308006 -0.944617 -23.8107 4 17 0 0.00 0.00 - no Open
251 2.6766618478585213 -0.788192 -19.5632 5 13 0 0.00 0.00 - no Open
384 2.841947707759492 -0.722835 -22.3314 7 15 0 0.00 0.00 - no Open
227 3.5547341151590794 -0.929113 -28.3877 7 17 13 0.62 0.50 - no Current
309 3.786488279726842 -0.56847 -15.7779 6 13 0 0.00 0.00 - no Open
212 4.583895943610404 -0.862298 -25.2616 8 20 0 0.00 0.00 - no Open
189 5.2780681559421225 -0.881399 -25.4739 10 18 0 0.00 0.00 - no Open
226 5.73927763117588 -0.991721 -27.141 12 26 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 -28.388kcal/mol
Ligand efficiency (LE) -0.8602kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.535
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 453.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.80
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 23.61kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 56.65kcal/mol
Minimised FF energy 33.04kcal/mol

SASA & burial

✓ computed
SASA (unbound) 787.6Ų
Total solvent-accessible surface area of free ligand
BSA total 630.9Ų
Buried surface area upon binding
BSA apolar 517.2Ų
Hydrophobic contacts buried
BSA polar 113.7Ų
Polar contacts buried
Fraction buried 80.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3436.3Ų
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 4428.5Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1648.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)