1SAC

THE STRUCTURE OF PENTAMERIC HUMAN SERUM AMYLOID P COMPONENT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.179 
  • R-Value Observed: 0.179 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structure of pentameric human serum amyloid P component.

Emsley, J.White, H.E.O'Hara, B.P.Oliva, G.Srinivasan, N.Tickle, I.J.Blundell, T.L.Pepys, M.B.Wood, S.P.

(1994) Nature 367: 338-345

  • DOI: 10.1038/367338a0
  • Primary Citation of Related Structures:  
    1SAC

  • PubMed Abstract: 
  • The three-dimensional structure of pentameric human serum amyloid P component at high resolution, the first reported for a pentraxin, reveals that the tertiary fold is remarkably similar to that of the legume lectins. Carboxylate and phosphate compounds bind directly to two calcium ions; interactions with a carboxyethylidene ring are mediated by Asn 59 and Gln 148 ligands of the calcium ions ...

    The three-dimensional structure of pentameric human serum amyloid P component at high resolution, the first reported for a pentraxin, reveals that the tertiary fold is remarkably similar to that of the legume lectins. Carboxylate and phosphate compounds bind directly to two calcium ions; interactions with a carboxyethylidene ring are mediated by Asn 59 and Gln 148 ligands of the calcium ions. These X-ray results indicate the probable modes of binding of the biologically important ligands, DNA and amyloid fibrils.


    Related Citations: 
    • A Pentameric Form of Human Serum Amyloid P Component: Crystallization, X-Ray Diffraction and Neutron Scattering Studies
      Wood, S.P., Oliva, G., O'Hara, B.P., White, H.E., Blundell, T.L., Perkins, S.J., Sardharwalla, I., Pepys, M.P.
      (1988) J Mol Biol 202: 169
    • Crystallization of Human Serum Amyloid P Component (Sap)
      O'Hara, B.P., Wood, S.P., Oliva, G., White, H.E., Pepys, M.B.
      (1988) J Cryst Growth 90: 209
    • Isolation and Characterization of the Complete Complementary and Genomic DNA Sequences of Human Serum
      Ohnishi, S., Maeda, S., Shimada, K., Arao, T.
      (1986) J Biochem 100: 849

    Organizational Affiliation

    Laboratory of Molecular Biology, Birkbeck College, London, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SERUM AMYLOID P COMPONENTA, B, C, D, E204Homo sapiensMutation(s): 0 
Gene Names: APCSPTX2
UniProt & NIH Common Fund Data Resources
Find proteins for P02743 (Homo sapiens)
Explore P02743 
Go to UniProtKB:  P02743
PHAROS:  P02743
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.179 
  • R-Value Observed: 0.179 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.9α = 90
b = 99.3β = 95.9
c = 96.7γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
RESTRAINrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-05-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-07-17
    Changes: Data collection, Other, Refinement description
  • Version 1.4: 2019-08-14
    Changes: Data collection, Refinement description