Structure of PDB 1g4c Chain B Binding Site BS02

Receptor Information

>1g4c Chain B (length=158) Species: 562 (Escherichia coli)

TVAYIAIGSNLASPLEQVNAALKALGDIPESHILTVSSFYRTPPLGPQDQ
PDYLNAAVALETSLAPEELLNHTQRIELQQGRVRKAERWGPATLDLDIML
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: 1g4c Chain B Residue 363

Receptor-Ligand Complex Structure

Structure summary

• PDB: 1g4c Dynamic Roles of Arginine Residues 82 and 92 of Escherichia coli 6-Hydroxymethyl-7,8-dihydropterin Pyrophosphokinase: Crystallographic Studies
• Resolution: 1.65 Å
• Binding residue (original residue number in PDB): D295 D297
• Binding residue (residue number reindexed from 1): D95 D97
• Annotation score: 1

Enzymatic activity

• Catalytic site (original residue number in PDB): R282 A292 D295 D297
• Catalytic site (residue number reindexed from 1): R82 A92 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:1g4c, PDBe:1g4c, PDBj:1g4c
• PDBsum: 1g4c
• PubMed: 12578370
• UniProt: P26281|HPPK_ECOLI 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase (Gene Name=folK)