ISDA

Deposition Date 2007-02-07

Release Date 2007-07-03

Last Version Date 2023-10-25

Entry Detail

PDB ID:

2EB8

Keywords:

OXYGEN STORAGE/TRANSPORT

Title:

Crystal Structure of Cu(II)(Sal-Phe)/apo-Myoglobin

Biological Source:

Source Organism:

Physeter catodon (Taxon ID: 9755)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.65 Å

R-Value Free:

0.24

R-Value Work:

0.20

R-Value Observed:

0.20

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Myoglobin
Gene (Uniprot):MB
Chain IDs:A
Chain Length:154
Number of Molecules:1
Biological Source:Physeter catodon

UniProt ID:P02185 Pfam ID:PF00042

Ligand Molecules

CUP

PO4

Primary Citation

Design and Structure Analysis of Artificial Metalloproteins: Selective Coordination of His64 to Copper Complexes with Square-Planar Structure in the apo-Myoglobin Scaffold

Abe, S, Ueno, T, Reddy, P.A.N, Okazaki, S, Hikage, T, Suzuki, A, Yamane, T, Nakajima, H, Watanabe, Y.Show

Inorg.Chem. 46 5137 5139 (2007)

PMID: 17523632 DOI: 10.1021/ic070289m

Abstact

apo-Myoglobin (apo-Mb) was reconstituted with three copper complexes: CuII(Sal-Phe) (1; Sal-Phe = N-salicylidene-L-phenylalanato), CuII(Sal-Leu) (2; Sal-Leu = N-salicylidene-L-leucinato), and CuII(Sal-Ala) (3; Sal-Ala = N-salicylidene-L-alanato). The crystal structures of 1.apo-Mb (1.65 Angstrom resolution) and 2.apo-Mb (1.8 Angstrom resolution) show that the coordination geometry around the CuII atom in apo-Mb is distorted square-planar with tridentate Sal-X and a Nepsilon atom of His64 in the apo-Mb cavity and the plane of these copper complexes is perpendicular to that of heme. These results suggest that the apo-Mb cavity can hold metal complexes with various coordination geometries.

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Primary Citation of related structures