ISDA: 1R1C

Deposition Date 2003-09-23

Release Date 2003-09-30

Last Version Date 2024-12-25

Entry Detail

PDB ID:

1R1C

Keywords:

ELECTRON TRANSPORT

Title:

PSEUDOMONAS AERUGINOSA W48F/Y72F/H83Q/Y108W-AZURIN RE(PHEN)(CO)3(HIS107)

Biological Source:

Source Organism:

Pseudomonas aeruginosa (Taxon ID: 287)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.90 Å

R-Value Free:

0.26

R-Value Work:

0.22

R-Value Observed:

0.22

Space Group:

P 1 21 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Azurin
Gene (Uniprot):azu
Mutagens:W48F/Y72F/H83Q/Q107H/Y108W
Chain IDs:A, B, C, D
Chain Length:128
Number of Molecules:4
Biological Source:Pseudomonas aeruginosa

UniProt ID:P00282 Pfam ID:PF00127

Ligand Molecules

CU1

REP

Primary Citation

Spectroscopy and reactivity of a photogenerated tryptophan radical in a structurally defined protein environment

Miller, J.E, Gradinaru, C, Crane, B.R, Di Bilio, A.J, Wehbi, W.A, Un, S, Winkler, J.R, Gray, H.B.Show

J.Am.Chem.Soc. 125 14220 14221 (2003)

PMID: 14624538 DOI: 10.1021/ja037203i

Abstact

Near-UV irradiation of structurally characterized [Re(I)(CO)3(1,10-phenanthroline)(Q107H)](W48F/Y72F/H83Q/Y108W)AzM(II) [Az = Pseudomonas aeruginosa azurin, M = Cu, Zn]/[Co(NH3)5Cl]Cl2 produces a tryptophan radical (W108*) with unprecedented kinetic stability. After rapid formation (k = 2.8 x 106 s-1), the radical persists for more than 5 h at room temperature in the folded ReAzM(II) structure. The absorption spectrum of ReAz(W108*)M(II) exhibits maxima at 512 and 536 nm. Oxidation of K4[Mo(CN)8] by ReAz(W108*)Zn(II) places the W108*/W108 reduction potential in the protein above 0.8 V vs NHE.

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Primary Citation of related structures

Abstact

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