FAIRMol

TC431

Pose ID 966 Compound 743 Pose 288

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T02
Human DHFR Human
Ligand TC431
PDB5SD8

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
39.9 kcal/mol
Protein clashes
0
Internal clashes
16
Native overlap
contact recall 0.81, Jaccard 0.68, H-bond role recall 0.00
Burial
81%
Hydrophobic fit
89%
Reason: 16 internal clashes
16 intramolecular clashes 40% of hydrophobic surface appears solvent-exposed (14/35 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.590 kcal/mol/HA) ✓ Good fit quality (FQ -6.27) ✓ Deep burial (81% SASA buried) ✓ Lipophilic contacts well-matched (89%) ✗ Very high strain energy (39.9 kcal/mol) ✗ No H-bonds detected ✗ Geometry warnings ✗ Many internal clashes (16)
Score
-25.365
kcal/mol
LE
-0.590
kcal/mol/HA
Fit Quality
-6.27
FQ (Leeson)
HAC
43
heavy atoms
MW
587
Da
LogP
6.79
cLogP
Strain ΔE
39.9 kcal/mol
SASA buried
81%
Lipo contact
89% BSA apolar/total
SASA unbound
994 Ų
Apolar buried
712 Ų

Interaction summary

HB 0 HY 24 PI 3 CLASH 0 ⚠ Exposure 40%

HB · H-bonds

No hb · h-bonds detected for this pose.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.
⚠️Partial hydrophobic solvent exposure
40% of hydrophobic surface appears solvent-exposed (14/35 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 35 Buried (contacted) 21 Exposed 14 LogP 6.79 H-bonds 0
Exposed fragments: phenyl (4/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (6 atoms exposed)
Final rank1.132Score-25.365
Inter norm-0.614Intra norm0.024
Top1000noExcludedno
Contacts21H-bonds0
Artifact reasongeometry warning; 16 clashes; high strain Δ 39.7
Residues
ALA10 ARG29 ASP22 GLU31 ILE61 ILE8 LEU23 LEU28 LEU68 NAP201 PHE32 PHE35 PRO27 PRO62 SER60 THR137 THR57 TYR122 TYR34 VAL116 VAL9

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name5SD8Contacts21
PoseOpen native poseHB0
IFP residues
ALA10 ASN65 ASP22 GLN36 GLU31 GLY117 GLY21 ILE61 ILE8 LEU23 LEU68 NAP201 PHE32 PHE35 PRO62 SER60 THR137 THR57 TYR122 VAL116 VAL9
Current overlap17Native recall0.81
Jaccard0.68RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

200 residues
Protein targetT02Atoms3128
Residues200Chains2
Residue summaryLYS:374; LEU:361; GLU:240; VAL:224; ARG:192; PHE:180; ILE:171; PRO:168; ASN:140; SER:132; TYR:126; GLN:119; ASP:108; MET:102; THR:98; GLY:91

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:NAP201

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
288 1.1324324421770302 -0.613884 -25.3653 0 21 17 0.81 0.00 - 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 -25.365kcal/mol
Ligand efficiency (LE) -0.5899kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.269
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 43HA

Physicochemical properties

Molecular weight 586.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 6.79
Lipinski: ≤ 5
Rotatable bonds 12

Conformational strain (MMFF94s)

Strain energy (ΔE) 39.85kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 157.12kcal/mol
Minimised FF energy 117.27kcal/mol

SASA & burial

✓ computed
SASA (unbound) 994.3Ų
Total solvent-accessible surface area of free ligand
BSA total 801.1Ų
Buried surface area upon binding
BSA apolar 712.4Ų
Hydrophobic contacts buried
BSA polar 88.7Ų
Polar contacts buried
Fraction buried 80.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 88.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1973.0Ų
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 1677.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 608.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)