Zobrazeno 31 - 40
of 59
pro vyhledávání: '"35"'
Publikováno v:
Journal of the American Chemical Society. 119:10121-10126
The resting state of nitrogenase shows an S = 3/2 electron paramagnetic resonance (EPR) signal resulting from the FeMo-cofactor (MoFe7S9:homocitrate) of the MoFe protein. When the enzyme undergoes turnover under a CO atmosphere, this signal disappear
Publikováno v:
Journal of the American Chemical Society. 119:3853-3860
Recent kinetic measurements of the oxidation of linoleic acid by soybean lipoxygenase show that the thermal rate constants, kH ) 280 ((12) s -1 and kD ) 5.0 ((0.1) s -1 , are weakly temperature dependent within the temperature interval 30-50 °C. The
Autor:
J. Hu, Marvin J. Miller
Publikováno v:
Journal of the American Chemical Society. 119:3462-3468
A general total synthesis of mycobactins, represented by a mycobactin S, was achieved by a convergent approach. Two hydroxamic acid residues, 28 and 40b, were prepared from commercially available Nα-Cbz-l-lysine via dimethyldioxirane oxidations. Cyc
Autor:
Torbjörn Norin, David S. Hermann, Lachezar Komitov, Christian Orrenius, Anders Hult, Ulf W. Gedde, Mikael Trollsas, F. Sahlén, and Sven T. Lagerwall, Jan Lindström, Per Rudquist
Publikováno v:
Journal of the American Chemical Society. 118:8542-8548
A novel cross-linked pyroelectric polymer with pronounced second-order nonlinear optical properties has been prepared. A multistep synthesis with several selective transformations including a kinetic resolution (transesterification) with the highly e
Publikováno v:
Journal of the American Chemical Society. 117:11619-11627
The detailed mechanism of DNA hydrolysis by enzymes is of significant current interest. One of the most important questions in this respect is the catalytic role of metal ions such as Mg{sup 2+}. Experimental evaluation of the catalytic effects of th
Autor:
Steven A Lombardo, Danielle N Herner, Katherine A. Wall, Rommel S. Talan, Sourav Sarkar, Steven J. Sucheck
Publikováno v:
Journal of the American Chemical Society. 132(48)
Carbohydrates are generally considered to be poorly immunogenic. Therefore, new approaches for enhancing their immunogenicity are important for the development of carbohydrates as vaccine components. We hypothesized that conjugation of an l-rhamnose
Publikováno v:
Journal of the American Chemical Society. 132(43)
Escherichia coli ribonucleotide reductase is an α2β2 complex that catalyzes the conversion of nucleotides to deoxynucleotides and requires a diferric-tyrosyl radical (Y(•)) cofactor to initiate catalysis. The initiation process requires long-rang
Publikováno v:
Journal of the American Chemical Society. 132(24)
E. coli ribonucleotide reductase catalyzes the reduction of nucleoside 5'-diphosphates into 2'-deoxynucleotides and is composed of two subunits: alpha2 and beta2. During turnover, a stable tyrosyl radical (Y*) at Y(122)-beta2 reversibly oxidizes C(43
Publikováno v:
Journal of the American Chemical Society. 131(31)
A MerR family metalloregulatory protein CupR selectively responds to gold stress in Ralstonia metallidurans. A distorted trigonal geometry appears to be used by CupR to achieve the highly sensitive (K(d) approximately 10(-35) M) and selective recogni
Autor:
Robert G. Griffin, Sylwia Kacprzak, Brian Hoffman, Erin Artin, JoAnne Stubbe, Hendrik Zipse, Debora Marcela Martino, Nicholas Lees, Martin Kaupp, Gregory J. S. Lohman, Marina Bennati, Stanislaw F. Wnuk
Publikováno v:
Journal of the American Chemical Society
The Escherichia coli ribonucleotide reductase (RNR) catalyzes the conversion of nucleoside diphosphates to deoxynucleotides and requires a diferric-tyrosyl radical cofactor for catalysis. RNR is composed of a 1:1 complex of two homodimeric subunits: