+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Anion complexes of copper ii and cobalt ii bovine carbonic anhydrase ec as models for the copper site of blue copper proteins

Anion complexes of copper ii and cobalt ii bovine carbonic anhydrase ec as models for the copper site of blue copper proteins

European Journal of Biochemistry 64(2): 453-457

The presence of 2 intense transitions in the optical absorption spectrum of the sulfide and 2-mercaptoethanol complexes of Cu(II) and Co(II)-substituted bovine carbonic anhydrase [EC] suggests that charge-transfer interactions between S and an acceptor group of the protein play an important role in the stabilization of these complexes. The spectra of Co(II) bovine carbonic anhydrase sulfides are similar to the spectrum of Co(II) stellacyanin while the spectra of the corresponding Cu(II) enzymes are different. A possible explanation is that Cu(II) is pentacoordinate in native stellacyanin unlike Cu(II) bovine carbonic anhydrase sulfides and Co(II) enzymes. Tetrahedral Co(II) stellacyanin is proposed as a model of the reduced Cu site.

(PDF emailed within 1 workday: $29.90)

Accession: 004751266

Download citation: RISBibTeXText

Related references

Anion complexes of Cu(II) and Co(II) bovine carbonic anhydrase as models for the copper site of blue copper proteins. European Journal of Biochemistry 64(2): 453-457, 1976

Stereochemistry of anion complexes of type 2 copper ii in rhus vernicifera laccase analogy with super oxide dis mutase and copper ii carbonic anhydrase. Febs Letters 98(2): 339-341, 1979

Models for blue copper proteins: Copper(II)-disulfide interaction in some copper complexes containing salicyl-, pyridyl-, and imidazolyl-aldimine ligands. Journal of Inorganic Biochemistry 43(2-3): 212-0, 1991

Simple models for blue copper proteins the copper thia ether complexes. Journal of the American Chemical Society 97(26): 7485-7486, 1975

Spectral and redox models for blue copper proteins: copper(II) complexes of β-diketonimines from a Knoevenagel condensate. Journal of Inorganic Biochemistry 72(3-4): 101-107, 1998

Blue copper proteins synthesis spectra and structures of copper i and copper ii hydro tris 3 5 di methyl 1 pyrazolyl borate mercaptide complex active site analogs. Proceedings of the National Academy of Sciences of the United States of America 74(8): 3114-3118, 1977

Blue copper proteins synthesis chemistry and spectroscopy of copper i and copper ii active site approximations crystal structure of potassium p nitrobenzenethiolatohydrotris 3 5 dimethyl 1 pyrazolylborato cuprate i di acetone. Journal of the American Chemical Society 101(15): 4180-4192, 1979

Preparation structure and properties of pseudotetrahedral d 2 d complexes of copper ii nickel ii cobalt ii copper i and zinc ii with geometrically constraining bidentate ligand 2 2' bis 2 imidazolylbiphenyl examination of electron self exchange for the copper i copper ii pair. Journal of the American Chemical Society 112(9): 3452-3464, 1990

Synthesis and structural and spectroscopic characterization of mononuclear copper nitrosyl complexes Models for nitric oxide adducts of copper proteins and copper-exchanged zeolites. Journal of the American Chemical Society 115(24): 11285-11298, 1993

A 31P NMR study of phosphate in presence of cobalt(II)- and copper(II)- substituted bovine carbonic anhydrase B. Febs Letters 93(2): 251-254, 1978

Structural and spectroscopic studies on four-, five-, and six-coordinate complexes of zinc, copper, nickel, and cobalt: Structural models for the bicarbonate intermediate of the carbonic anhydrase catalytic cycle. Journal of Inorganic Biochemistry 49(2): 105-121, 1993

Formate as an NMR probe of anion binding to copper, zinc and copper, cobalt bovine erythrocyte superoxide dismutases. Biochemistry 31(49): 12410-12415, 1992

Formate as an NMR probe of anion binding to copper-zinc and copper-cobalt bovine erythrocyte superoxide dismutase. Biochemistry 31(49): 12410-12415, 1992

The first direct evidence for copper -cysteine vibrations in blue copper proteins Resonance Raman spectra of 34S-Cys-labeled azurins reveal correlation of copper-sulfur stretching frequency with metal site geometry. Journal of the American Chemical Society 115(25): 12175-12176, 1993

Trigonal planar copper(I) complex: synthesis, structure, and spectra of a redox pair of novel copper(II/I) complexes of tridentate bis(benzimidazol-2'-yl) ligand framework as models for electron-transfer copper proteins. Inorganic Chemistry 40(10): 2246-2255, 2001