ISDA

Deposition Date 2015-02-20

Release Date 2016-01-13

Last Version Date 2025-04-09

Entry Detail

PDB ID:

4YCN

Keywords:

HYDROLASE

Title:

Crystal structure of the calcium pump with bound marine macrolide BLLB

Biological Source:

Source Organism:

Oryctolagus cuniculus (Taxon ID: 9986)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.50 Å

R-Value Free:

0.24

R-Value Work:

0.21

R-Value Observed:

0.21

Space Group:

P 41 21 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Sarcoplasmic/endoplasmic reticulum calcium ATPase 1
Gene (Uniprot):ATP2A1
Chain IDs:A
Chain Length:994
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:P04191 Pfam ID:PF00690, PF00122, PF13246, PF00702, PF00689 EC:7.2.2.10

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
AME	A	MET	modified residue

Ligand Molecules

7BL

PTY

SO4

Primary Citation

Biselyngbyasides, cytotoxic marine macrolides, are novel and potent inhibitors of the Ca(2+) pumps with a unique mode of binding

Morita, M, Ogawa, H, Ohno, O, Yamori, T, Suenaga, K, Toyoshima, C.Show

Febs Lett. 589 1406 1411 (2015)

PMID: 25957767 DOI: 10.1016/j.febslet.2015.04.056

Abstact

Biselyngbyasides (BLSs), macrolides from a marine cyanobacterium, are cytotoxic natural products whose target molecule is unknown. Here we report that BLSs are high affinity (Ki∼10 nM) inhibitors of Ca(2+)-pumps with a unique binding mode. The crystal structures of the Ca(2+)-pump in complex with BLSs at 3.2-3.5 Å-resolution show that BLSs bind to the pump near the cytoplasmic surface of the transmembrane region. The crystal structures and activity measurement of BLS analogs allow us to identify the structural features that confer high potency to BLSs as inhibitors of the pump.

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Protein

Chemical

Disease

Primary Citation of related structures