1r1c
From Proteopedia
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'''PSEUDOMONAS AERUGINOSA W48F/Y72F/H83Q/Y108W-AZURIN RE(PHEN)(CO)3(HIS107)''' | '''PSEUDOMONAS AERUGINOSA W48F/Y72F/H83Q/Y108W-AZURIN RE(PHEN)(CO)3(HIS107)''' | ||
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[[Category: Gradinaru, C.]] | [[Category: Gradinaru, C.]] | ||
[[Category: Miller, J E.]] | [[Category: Miller, J E.]] | ||
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Revision as of 03:57, 3 May 2008
PSEUDOMONAS AERUGINOSA W48F/Y72F/H83Q/Y108W-AZURIN RE(PHEN)(CO)3(HIS107)
Overview
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.
About this Structure
1R1C is a Single protein structure of sequence from Pseudomonas aeruginosa. Full crystallographic information is available from OCA.
Reference
Spectroscopy and reactivity of a photogenerated tryptophan radical in a structurally defined protein environment., Miller JE, Gradinaru C, Crane BR, Di Bilio AJ, Wehbi WA, Un S, Winkler JR, Gray HB, J Am Chem Soc. 2003 Nov 26;125(47):14220-1. PMID:14624538 Page seeded by OCA on Sat May 3 06:57:23 2008
