Structure of PDB 3hsg Chain A Binding Site BS01

Receptor Information

>3hsg Chain A (length=158) Species: 83333 (Escherichia coli K-12)

TVAYIAIGSNLASPLEQVNAALKALGDIPESHILTVSSFYRTPPLGPQDQ
PDALNAAVALETSLAPEELLNHTQRIELQQGRVRKAERWGPRTLDLDIML
FGNEVINTERLTVPHYDMKNRGFMLWPLFEIAPELVFPDGEMLRQILHTR
AFDKLNKW

Ligand information

• Ligand ID: MG
• InChI: InChI=1S/Mg/q+2
• InChIKey: JLVVSXFLKOJNIY-UHFFFAOYSA-N
• SMILES:
  ACDLabs 10.04
  OpenEye OEToolkits 1.5.0: [Mg+2]
  CACTVS 3.341: [Mg++]
• Formula: Mg
• Name: MAGNESIUM ION
• DrugBank: DB01378
• PDB chain: 3hsg Chain A Residue 161

Receptor-Ligand Complex Structure

Structure summary

• PDB: 3hsg Catalytic center assembly of HPPK as revealed by the crystal structure of a ternary complex at 1.25 A resolution
• Resolution: 1.14 Å
• Binding residue (original residue number in PDB): D95 D97
• Binding residue (residue number reindexed from 1): D95 D97
• Annotation score: 1

Enzymatic activity

• Catalytic site (original residue number in PDB): R82 R92 D95 D97
• Catalytic site (residue number reindexed from 1): R82 R92 D95 D97
• Enzyme Commision number: 2.7.6.3: 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine diphosphokinase.

Gene Ontology

Molecular Function

• GO:0000287 magnesium ion binding
• GO:0003848 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine diphosphokinase activity
• GO:0005524 ATP binding
• GO:0016301 kinase activity

Biological Process

• GO:0009396 folic acid-containing compound biosynthetic process
• GO:0016310 phosphorylation
• GO:0046654 tetrahydrofolate biosynthetic process
• GO:0046656 folic acid biosynthetic process

External links

• PDB: RCSB:3hsg, PDBe:3hsg, PDBj:3hsg
• PDBsum: 3hsg
• UniProt: P26281|HPPK_ECOLI 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase (Gene Name=folK)