ISDA

Entry Detail

PDB ID:

1SAC

Keywords:

AMYLOID PROTEIN

Title:

THE STRUCTURE OF PENTAMERIC HUMAN SERUM AMYLOID P COMPONENT

Biological Source:

Source Organism:

Homo sapiens

PDB Version:

Deposition Date:

1994-01-27

Release Date:

1994-05-31

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.00 Å

R-Value Work:

0.17

R-Value Observed:

0.17

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:SERUM AMYLOID P COMPONENT
Chain IDs:A, B, C, D, E
Chain Length:204
Number of Molecules:5
Biological Source:Homo sapiens

UniProt ID:P02743 Pfam ID:PF00354

Ligand Molecules

ACY

Primary Citation

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, Wood, S.P, Oliva, G, O'Hara, B.P, White, H.E, Blundell, T.L, Perkins, S.J, Sardharwalla, I, Pepys, M.P, O'Hara, B.P, Wood, S.P, Oliva, G, White, H.E, Pepys, M.B, Ohnishi, S, Maeda, S, Shimada, K, Arao, T.Show

Nature 367 338 345 (1994)

PMID: 8114934 DOI: 10.1038/367338a0

Abstact

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.

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Primary Citation of related structures