Ligand profile

2A5

Ligand co-crystallized with a similar protein (Protein Data Bank).

Bound to: KP13_00958 — Ribonucleoside-diphosphate reductase 1 subunit alpha

Via homolog PDB 3k8t UniProt P21524 Formula C₁₂H₁₉N₅O₁₀P₂
Mol. weight 455.26 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
2A5
PDB
3k8t
UniProt (similar protein)
P21524
Target protein
KP13_00958

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 455.26 Da
LogP (Crippen) -1.11
H-bond donors 6
H-bond acceptors 12
TPSA 232.60 Ų
Rotatable bonds 8
Aromatic rings 2 / 3
Heavy atoms 29
Fraction sp³ C 0.58
Formula C₁₂H₁₉N₅O₁₀P₂

Drug-likeness

Descriptor-based ADME screening flags from SMILES. These are not experimental toxicity results.

Permeability proxy Check

Estimated from TPSA and LogP only: TPSA ≤ 90 Ų and −1 ≤ LogP ≤ 5 are treated as a favorable small-molecule permeability screen.

  • TPSA ≤ 90 Ų 232.6
  • −1 ≤ LogP ≤ 5 -1.11
Lipinski's Rule of Five Fail 2 violations
  • MW ≤ 500 Da 455.3
  • LogP ≤ 5 -1.11
  • H-bond donors ≤ 5 6
  • H-bond acceptors ≤ 10 12
Veber's rules Fail
  • Rotatable bonds ≤ 10 8
  • TPSA ≤ 140 Ų 232.6
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@](=O)(O)OP(=O)(O)O)O)CCO)N
InChI 
InChI=1S/C12H19N5O10P2/c13-10-8-11(15-4-14-10)17(5-16-8)12-6(1-2-18)9(19)7(26-12)3-25-29(23,24)27-28(20,21)22/h4-7,9,12,18-19H,1-3H2,(H,23,24)(H2,13,14,15)(H2,20,21,22)/t6-,7-,9+,12-/m1/s1
InChIKey 
RHTGRZKDKXTTPI-PNFUHCLESA-N

Provenance

Annotation context from LigQ_2, the internal Target step that collects PDB, ChEMBL, and ZINC ligand evidence.

Method
LigQ nearest_k
Source
PDB
Binding sites
PF00317' 'PF02867

External resources

Open this ligand in third-party databases and cheminformatics tools.

Other ligands for this protein

Quick navigation to other ligands bound to KP13_00958.

PDB 15

Ligands co-crystallized with this protein (structural evidence).

Ligand PDB entry

ChEMBL 9

Compounds with measured inhibitory activity on this target (higher pchembl = more potent).

Compound Potency (pchembl)

ZINC 50

Virtual screening candidates selected by structural similarity to known actives (Tanimoto ≥ 0.5).

Compound Similarity (Tanimoto)