FAIRMol

MK211

Pose ID 3641 Compound 446 Pose 255

DB fairmolDocking pose analysis is being read from this database.
Compound detail Protein structures Back to compounds
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T06
T. brucei DHFR T. brucei
Ligand MK211
PDB8RHT↗

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 medium Native strong SASA done
Strain ΔE
33.4 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.67, Jaccard 0.56, H-bond role recall 0.00
Burial
92%
Hydrophobic fit
85%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.580 kcal/mol/HA) ✓ Good fit quality (FQ -5.76) ✓ Deep burial (92% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ Very high strain energy (33.4 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (4) ✗ Many internal clashes (16)
Score
-19.144
kcal/mol
LE
-0.580
kcal/mol/HA
Fit Quality
-5.76
FQ (Leeson)
HAC
33
heavy atoms
MW
452
Da
LogP
5.61
cLogP
Final rank
1.6709
rank score
Inter norm
-0.719
normalised
Contacts
18
H-bonds 4
Strain ΔE
33.4 kcal/mol
SASA buried
92%
Lipo contact
85% BSA apolar/total
SASA unbound
750 Ų
Apolar buried
583 Ų

Interaction summary

HBA 1 HY 10 PI 4 CLASH 3

HBD/HBA · H-bonds (geometric)
HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 1.

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.
Name8RHTContacts21
PoseOpen native poseHB0
IFP residues
ALA34 ASP54 HIS182 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE233 PHE58 PHE94 PRO91 SER89 THR184 THR86 TRP49 TYR166 TYR57 VAL32 VAL33
Current overlap14Native recall0.67
Jaccard0.56RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue1HB residue recall0.25

Protein summary

223 residues
Protein targetT06Atoms3452
Residues223Chains1
Residue summaryARG:408; VAL:352; LYS:308; LEU:304; PRO:238; ILE:209; GLU:195; THR:182; SER:176; ALA:160; PHE:140; ASN:126; GLY:126; ASP:108; GLN:85; 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
323 0.9281368038146153 -0.881859 -27.4888 7 19 0 0.00 0.00 - no Open
240 0.9326315971844619 -0.794452 -22.7292 5 18 1 0.05 0.00 - no Open
255 1.6709017941564726 -0.71887 -19.1442 4 18 14 0.67 0.00 - no Current
202 2.4158386797718454 -0.908111 -29.0361 6 17 0 0.00 0.00 - no Open
333 2.5964806201553707 -0.779283 -26.5781 4 18 0 0.00 0.00 - no Open
316 2.7681947305161128 -0.62579 -17.3714 9 11 0 0.00 0.00 - no Open
321 2.7847742168238394 -0.855996 -21.2829 7 16 1 0.05 0.00 - no Open
208 3.2737333179935955 -0.86353 -26.0064 11 21 0 0.00 0.00 - no Open
282 3.2908590644988394 -0.643978 -17.2385 5 17 0 0.00 0.00 - no Open
266 3.6696914491795702 -0.969686 -27.9485 9 18 0 0.00 0.00 - no Open
260 3.724512830525498 -0.752336 -20.2105 6 14 0 0.00 0.00 - no Open
306 4.479899767376692 -0.891979 -23.8503 8 21 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 -19.144kcal/mol
Ligand efficiency (LE) -0.5801kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.756
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties
Molecular weight 451.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.61
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)
Strain energy (ΔE) 33.37kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 53.32kcal/mol
Minimised FF energy 19.95kcal/mol

SASA & burial

✓ computed
SASA (unbound) 749.9Ų
Total solvent-accessible surface area of free ligand
BSA total 688.8Ų
Buried surface area upon binding
BSA apolar 583.4Ų
Hydrophobic contacts buried
BSA polar 105.3Ų
Polar contacts buried
Fraction buried 91.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 84.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1850.0Ų
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 1808.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 586.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)