Structure of PDB 4dxw Chain A Binding Site BS01

Receptor Information

>4dxw Chain A (length=210) Species: 684719 (alpha proteobacterium HIMB114)

TPFFSSLKDNRIFQFTVVSIIILNAVLIGATTYELDPLFLETIHLLDYGI
TIFFVIEILIRFIGSGWNIFDTVIVAISLIPVLRLLRIFRVLRLISVIPE
LKQIIEAILESVRRVFFVSLLLFIILYIYATMGAILFGNDDPSRWGDLGI
SLITLFQVLTLSSWETVMLPMQEIYWWSWVYFFSFIIICSITILNLVIAI
LVDVVIQKKL

Ligand information

• Ligand ID: CA
• InChI: InChI=1S/Ca/q+2
• InChIKey: BHPQYMZQTOCNFJ-UHFFFAOYSA-N
• SMILES:
  CACTVS 3.341: [Ca++]
  ACDLabs 10.04
  OpenEye OEToolkits 1.5.0: [Ca+2]
• Formula: Ca
• Name: CALCIUM ION
• DrugBank: DB14577
• PDB chain: 4dxw Chain A Residue 303

Receptor-Ligand Complex Structure

Structure summary

• PDB: 4dxw Crystal structure of an orthologue of the NaChBac voltage-gated sodium channel
• Resolution: 3.052 Å
• Binding residue (original residue number in PDB): K226 K227
• Binding residue (residue number reindexed from 1): K208 K209
• Annotation score: 1

Gene Ontology

Molecular Function

• GO:0005216 monoatomic ion channel activity
• GO:0005248 voltage-gated sodium channel activity
• GO:0005261 monoatomic cation channel activity
• GO:0005509 calcium ion binding

Biological Process

• GO:0006811 monoatomic ion transport
• GO:0035725 sodium ion transmembrane transport
• GO:0055085 transmembrane transport
• GO:0098655 monoatomic cation transmembrane transport

Cellular Component

• GO:0001518 voltage-gated sodium channel complex
• GO:0005886 plasma membrane
• GO:0016020 membrane

External links

• PDB: RCSB:4dxw, PDBe:4dxw, PDBj:4dxw
• PDBsum: 4dxw
• PubMed: 22678295
• UniProt: D0RMU8