FAIRMol

MK34

Pose ID 1656 Compound 427 Pose 301

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 MK34

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
51.5 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.65, Jaccard 0.57, H-bond role recall 0.20
Burial
84%
Hydrophobic fit
88%
Reason: strain 51.5 kcal/mol
strain ΔE 51.5 kcal/mol 1 protein-contact clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.716 kcal/mol/HA) ✓ Good fit quality (FQ -7.10) ✓ Good H-bonds (3 bonds) ✓ Deep burial (84% SASA buried) ✓ Lipophilic contacts well-matched (88%) ✗ Extreme strain energy (51.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-23.613
kcal/mol
LE
-0.716
kcal/mol/HA
Fit Quality
-7.10
FQ (Leeson)
HAC
33
heavy atoms
MW
478
Da
LogP
2.62
cLogP
Final rank
3.0437
rank score
Inter norm
-0.827
normalised
Contacts
16
H-bonds 4
Strain ΔE
51.5 kcal/mol
SASA buried
84%
Lipo contact
88% BSA apolar/total
SASA unbound
797 Ų
Apolar buried
593 Ų

Interaction summary

HBA 3 HY 6 PI 2 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

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.
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 overlap13Native recall0.65
Jaccard0.57RMSD-
HB strict2Strict recall0.29
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.20

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
322 2.4632535257357913 -0.817707 -21.2217 5 20 0 0.00 0.00 - no Open
301 3.0437208397966757 -0.82748 -23.6132 4 16 13 0.65 0.20 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -23.613kcal/mol
Ligand efficiency (LE) -0.7156kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.100
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 477.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.62
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 51.54kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 49.58kcal/mol
Minimised FF energy -1.97kcal/mol

SASA & burial

✓ computed
SASA (unbound) 797.2Ų
Total solvent-accessible surface area of free ligand
BSA total 671.6Ų
Buried surface area upon binding
BSA apolar 592.7Ų
Hydrophobic contacts buried
BSA polar 79.0Ų
Polar contacts buried
Fraction buried 84.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 88.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1711.7Ų
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 781.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)