Structure of PDB 2qb8 Chain A Binding Site BS01

Receptor Information

>2qb8 Chain A (length=393) Species: 4932 (Saccharomyces cerevisiae)

RKTVPEFLAHLKSLPISKIASNDVLTICVGNESADMDSIASAITYSYCQY
IYNEGTYSEEKKKGSFIVPIIDIPREDLSLRRDVMYVLEKLKIKEEELFF
IEDLKSLKQNVSQGTELNSYLVDNNDTPKNLKNYIDNVVGIIDHHFDLQK
HLDAEPRIVKVSGSCSSLVFNYWYEKLQGDREVVMNIAPLLMGAILIDTS
NMRRKVEESDKLAIERCQAVLSGAVNEVSAQGLEDSSEFYKEIKSRKNDI
KGFSVSDILKKDYKQFNFQGKGHKGLEIGLSSIVKRMSWLFNEHGGEADF
VNQCRRFQAERGLDVLVLLTSWRKAGDSHRELVILGDSNVVRELIERVSD
KLQLQLFGGNLDGGVAMFKQLNVEATRKQVVPYLEEAYSNLEE

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: 2qb8 Chain A Residue 401

Receptor-Ligand Complex Structure

Structure summary

• PDB: 2qb8 The crystal structure of the cytosolic exopolyphosphatase from Saccharomyces cerevisiae reveals the basis for substrate specificity.
• Resolution: 1.9 Å
• Binding residue (original residue number in PDB): D41 D127 H148
• Binding residue (residue number reindexed from 1): D37 D123 H144
• Annotation score: 1

Enzymatic activity

• Enzyme Commision number: 3.6.1.11: exopolyphosphatase.

Gene Ontology

Molecular Function

• GO:0004309 exopolyphosphatase activity
• GO:0005524 ATP binding
• GO:0016462 pyrophosphatase activity
• GO:0016787 hydrolase activity
• GO:0046872 metal ion binding

Biological Process

• GO:0006798 polyphosphate catabolic process

Cellular Component

• GO:0005737 cytoplasm

External links

• PDB: RCSB:2qb8, PDBe:2qb8, PDBj:2qb8
• PDBsum: 2qb8
• PubMed: 17599355
• UniProt: P38698|PPX1_YEAST Polyphosphatase (Gene Name=PPX1)