Structure of PDB 1hdk Chain A Binding Site BS02

Receptor Information

>1hdk Chain A (length=139) Species: 9606 (Homo sapiens)

SLLPVPYTEAASLSTGSTVTIKGRPLVCFLNEPYLQVDFHTEMKEESDIV
FHFQVCFGRRVVMNSREYGAWKQQVESKNMPFQDGQEFELSISVLPDKYQ
VMVNGQSSYTFDHRIKPEAVKMVQVWRDISLTKFNVSYL

Ligand information

• Ligand ID: PMB
• InChI: InChI=1S/C6H5O3S.Hg/c7-10(8,9)6-4-2-1-3-5-6;/h2-5H,(H,7,8,9);
• InChIKey: KQAOIKIZSJJTII-UHFFFAOYSA-N
• SMILES:
  OpenEye OEToolkits 1.5.0: c1cc(ccc1S(=O)(=O)O)[Hg]
  CACTVS 3.341: O[S](=O)(=O)c1ccc([Hg])cc1
  ACDLabs 10.04: [Hg]c1ccc(cc1)S(=O)(=O)O
• Formula: C6 H5 Hg O3 S
• Name: PARA-MERCURY-BENZENESULFONIC ACID
• DrugBank: DB02983
• PDB chain: 1hdk Chain A Residue 957

Receptor-Ligand Complex Structure

Structure summary

• PDB: 1hdk Charcot-Leyden Crystal Protein (Galectin-10) is not a Dual Function Galectin with Lysophospholipase Activity But Binds a Lysophospholipase Inhibitor in a Novel Structural Fashion.
• Resolution: 1.8 Å
• Binding residue (original residue number in PDB): C57 R60 R61
• Binding residue (residue number reindexed from 1): C56 R59 R60
• Annotation score: 1

Enzymatic activity

• Enzyme Commision number: 3.1.1.5: lysophospholipase.

Gene Ontology

Molecular Function

• GO:0004622 lysophospholipase activity
• GO:0005515 protein binding
• GO:0030246 carbohydrate binding
• GO:0042802 identical protein binding
• GO:0097153 cysteine-type endopeptidase activity involved in apoptotic process

Biological Process

• GO:0002667 regulation of T cell anergy
• GO:0002724 regulation of T cell cytokine production
• GO:0046006 regulation of activated T cell proliferation
• GO:0070231 T cell apoptotic process

Cellular Component

• GO:0005737 cytoplasm
• GO:0005829 cytosol
• GO:0062023 collagen-containing extracellular matrix

External links

• PDB: RCSB:1hdk, PDBe:1hdk, PDBj:1hdk
• PDBsum: 1hdk
• PubMed: 11834744
• UniProt: Q05315|LEG10_HUMAN Galectin-10 (Gene Name=CLC)