Structure of PDB 2a3x Chain E Binding Site BS02

Receptor Information
>2a3x Chain E (length=204) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
HTDLSGKVFVFPRESVTDHVNLITPLEKPLQNFTLCFRAYSDLSRAYSLF
SYNTQGRDNELLVYKERVGEYSLYIGRHKVTSKVIEKFPAPVHICVSWES
SSGIAEFWINGTPLVKKGLRQGYFVEAQPKIVLGQEQDSYGGKFDRSQSF
VGEIGDLYMWDSVLPPENILSAYQGTPLPANILDWQALNYEIRGYVIIKP
LVWV
Ligand information
Ligand IDCA
InChIInChI=1S/Ca/q+2
InChIKeyBHPQYMZQTOCNFJ-UHFFFAOYSA-N
SMILES
SoftwareSMILES
CACTVS 3.341[Ca++]
ACDLabs 10.04
OpenEye OEToolkits 1.5.0		[Ca+2]
FormulaCa
NameCALCIUM ION
ChEMBL
DrugBankDB14577
ZINC
PDB chain2a3x Chain E Residue 310 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB2a3x Ligand-assisted Aggregation of Proteins: DIMERIZATION OF SERUM AMYLOID P COMPONENT BY BIVALENT LIGANDS.
Resolution3.0 Å
Binding residue
(original residue number in PDB)		E136 D138 Q148
Binding residue
(residue number reindexed from 1)		E136 D138 Q148
Annotation score4
Enzymatic activity
Enzyme Commision number ?
Gene Ontology
Molecular Function
GO:0001849 complement component C1q complex binding
GO:0005509 calcium ion binding
GO:0005515 protein binding
GO:0030246 carbohydrate binding
GO:0042802 identical protein binding
GO:0046790 virion binding
GO:0046872 metal ion binding
GO:0051082 unfolded protein binding
Biological Process
GO:0002674 negative regulation of acute inflammatory response
GO:0006457 protein folding
GO:0006953 acute-phase response
GO:0044869 negative regulation by host of viral exo-alpha-sialidase activity
GO:0044871 negative regulation by host of viral glycoprotein metabolic process
GO:0045087 innate immune response
GO:0045656 negative regulation of monocyte differentiation
GO:0046597 negative regulation of viral entry into host cell
GO:0048525 negative regulation of viral process
GO:0051131 chaperone-mediated protein complex assembly
GO:0061045 negative regulation of wound healing
GO:1903016 negative regulation of exo-alpha-sialidase activity
GO:1903019 negative regulation of glycoprotein metabolic process
Cellular Component
GO:0005576 extracellular region
GO:0005615 extracellular space
GO:0005634 nucleus
GO:0062023 collagen-containing extracellular matrix
GO:0070062 extracellular exosome
GO:0072562 blood microparticle

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:2a3x, PDBe:2a3x, PDBj:2a3x
PDBsum2a3x
PubMed16036920
UniProtP02743|SAMP_HUMAN Serum amyloid P-component (Gene Name=APCS)

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