FAIRMol

MK127

Pose ID 2951 Compound 2310 Pose 241

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T05
L. major PTR1 L. major
Ligand MK127
PDB7PXX

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
78.2 kcal/mol
Protein clashes
4
Internal clashes
5
Native overlap
contact recall 0.65, Jaccard 0.52, H-bond role recall 0.33
Burial
87%
Hydrophobic fit
63%
Reason: strain 78.2 kcal/mol
strain ΔE 78.2 kcal/mol 4 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.980 kcal/mol/HA) ✓ Good fit quality (FQ -9.14) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (87% SASA buried) ✓ Lipophilic contacts well-matched (63%) ✗ Extreme strain energy (78.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (7)
Score
-26.461
kcal/mol
LE
-0.980
kcal/mol/HA
Fit Quality
-9.14
FQ (Leeson)
HAC
27
heavy atoms
MW
381
Da
LogP
-0.46
cLogP
Final rank
4.6902
rank score
Inter norm
-1.100
normalised
Contacts
15
H-bonds 10
Strain ΔE
78.2 kcal/mol
SASA buried
87%
Lipo contact
63% BSA apolar/total
SASA unbound
622 Ų
Apolar buried
343 Ų

Interaction summary

HBD 2 HBA 5 HY 4 PI 2 CLASH 5

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.
NameligandContacts17
PoseOpen native poseHB0
IFP residues
ARG17 GLY225 HIS241 LEU188 LEU226 LEU229 LYS198 MET233 NDP302 PHE113 PRO115 SER111 SER227 TYR191 TYR194 VAL230 ARG287
Current overlap11Native recall0.65
Jaccard0.52RMSD-
HB strict1Strict recall0.14
HB same residue+role2HB role recall0.33
HB same residue2HB residue recall0.40

Protein summary

274 residues
Protein targetT05Atoms4108
Residues274Chains2
Residue summaryLEU:494; ALA:421; ARG:384; VAL:368; THR:295; TYR:231; SER:198; PRO:196; ILE:190; LYS:176; ASN:154; GLU:150; GLY:126; PHE:120; HIS:119; ASP:108

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:NDP302

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
241 4.690239820928678 -1.10037 -26.4606 10 15 11 0.65 0.33 - 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 -26.461kcal/mol
Ligand efficiency (LE) -0.9800kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.143
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 381.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) -0.46
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 78.23kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 132.38kcal/mol
Minimised FF energy 54.15kcal/mol

SASA & burial

✓ computed
SASA (unbound) 621.7Ų
Total solvent-accessible surface area of free ligand
BSA total 543.5Ų
Buried surface area upon binding
BSA apolar 342.9Ų
Hydrophobic contacts buried
BSA polar 200.5Ų
Polar contacts buried
Fraction buried 87.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 63.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1580.1Ų
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 2179.4Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1018.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)