Structure of PDB 2a3x Chain D

Receptor sequence
>2a3xD (length=204) Species: 9606 (Homo sapiens) [Search protein sequence]
HTDLSGKVFVFPRESVTDHVNLITPLEKPLQNFTLCFRAYSDLSRAYSLF
SYNTQGRDNELLVYKERVGEYSLYIGRHKVTSKVIEKFPAPVHICVSWES
SSGIAEFWINGTPLVKKGLRQGYFVEAQPKIVLGQEQDSYGGKFDRSQSF
VGEIGDLYMWDSVLPPENILSAYQGTPLPANILDWQALNYEIRGYVIIKP
LVWV
3D structure
PDB2a3x Ligand-assisted Aggregation of Proteins: DIMERIZATION OF SERUM AMYLOID P COMPONENT BY BIVALENT LIGANDS.
ChainD
Resolution3.0 Å
3D
structure
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Enzymatic activity
Enzyme Commision number ?
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 CA D D58 N59 E136 Q137 D138 D58 N59 E136 Q137 D138
BS02 CA D D138 Q148 D138 Q148
BS03 CPK D N59 Y74 E136 D138 Q148 N59 Y74 E136 D138 Q148 PDBbind-CN: -logKd/Ki=6.92,IC50=0.12uM
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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