FAIRMol

MK155

Pose ID 1667 Compound 734 Pose 312

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T03
L. major DHFR L. major
Ligand MK155

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 mixed SASA done
Strain ΔE
14.8 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.40, Jaccard 0.33, H-bond role recall 0.00
Burial
87%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
1 protein-contact clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Daphnia EC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Algae IC₅₀
Cat. 2 — Toxic (1–10 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 (-0.885 kcal/mol/HA) ✓ Good fit quality (FQ -8.53) ✓ Good H-bonds (3 bonds) ✓ Deep burial (87% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ Moderate strain (14.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-26.540
kcal/mol
LE
-0.885
kcal/mol/HA
Fit Quality
-8.53
FQ (Leeson)
HAC
30
heavy atoms
MW
410
Da
LogP
4.14
cLogP
Final rank
2.0469
rank score
Inter norm
-0.906
normalised
Contacts
12
H-bonds 3
Strain ΔE
14.8 kcal/mol
SASA buried
87%
Lipo contact
82% BSA apolar/total
SASA unbound
697 Ų
Apolar buried
496 Ų

Interaction summary

HBD 1 HBA 2 HY 6 PI 2 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 3.

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: permissive.
Name3CL9Contacts20
PoseOpen native poseHB0
IFP residues
ALA32 ARG97 ASP52 ILE45 LEU94 LYS57 MET53 NDP301 PHE56 PHE91 PRO88 SER86 THR180 THR54 THR83 TYR162 VAL156 VAL30 VAL31 VAL87
Current overlap8Native recall0.40
Jaccard0.33RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

225 residues
Protein targetT03Atoms3428
Residues225Chains2
Residue summaryLEU:380; ARG:360; VAL:272; LYS:264; ALA:240; GLU:240; PRO:224; PHE:180; THR:154; ILE:152; SER:132; TYR:126; GLN:119; ASN:98; GLY:84; 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
254 0.9421878815959558 -1.08652 -30.5394 8 13 0 0.00 0.00 - no Open
313 1.070611567424537 -0.87263 -21.7991 5 19 0 0.00 0.00 - no Open
247 1.1050271047072073 -0.764064 -19.9199 3 18 1 0.05 0.00 - no Open
312 2.0468663424797895 -0.905764 -26.5397 3 12 8 0.40 0.00 - no Current
258 2.9118442055019966 -1.12501 -31.7293 4 16 0 0.00 0.00 - no Open
276 3.2822642479917032 -0.804218 -21.7781 4 16 0 0.00 0.00 - no Open
213 4.18837115787037 -0.966775 -26.8458 10 21 0 0.00 0.00 - no Open
227 4.564527394519201 -1.06759 -27.4648 12 16 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 -26.540kcal/mol
Ligand efficiency (LE) -0.8847kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.534
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 410.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.14
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 14.76kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 54.01kcal/mol
Minimised FF energy 39.24kcal/mol

SASA & burial

✓ computed
SASA (unbound) 696.6Ų
Total solvent-accessible surface area of free ligand
BSA total 608.3Ų
Buried surface area upon binding
BSA apolar 496.2Ų
Hydrophobic contacts buried
BSA polar 112.0Ų
Polar contacts buried
Fraction buried 87.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1596.3Ų
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 1820.7Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 802.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)