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Displaying 876 - 900 of 1174

Molecular Biomarkers Used to Detect Cellular/Genetic Damage in Tissue-Engineered Skin

January 1, 2004
Author(s)
C D. O'Connell, Peter E. Barker, M A. Marino, P McAndrew, Donald H. Atha, Pawel Jaruga, M Birincioglu, H Rodriguez
To assure that tissue engineered medical products are free of genetic changes that might occur from inflammation during the development phase of the product, Tissue engineered skin (TestSkin II) was obtained, separated into its two cellular layers

Highly Multiplexed Assays for Measuring Polymorphisms on the Y-Chromosome

October 17, 2003
Author(s)
John M. Butler, R Schoske, Peter Vallone
A multiplex PCR assay capable of amplifying 20 Y chromosome short tandem repeat (STR) markers simultaneously has been developed. These markers include all of the Y STRs that make up the extended haplotype used in Europe (DYS19, DYS385, DYS389I/II, DYS390

Electrostatic Influence on Ion Transport through the alpha HL Channel

October 1, 2003
Author(s)
M Misakian, John J. Kasianowicz
The current-voltage relationship of a single Staphylococcus aureus α-hemolysin(αHL) channel is nonlinear, rectifying, and depends on the bulk pH and the ionic strength. The data are described qualitatively by a simple one-dimensional Nernst-Planck analysis

Fluorescence Thermometry in Microfluidics

September 29, 2003
Author(s)
David J. Ross, Laurie E. Locascio
Two techniques are described for the measurement of fluid temperatures in microfluidic systems based on temperature-dependent fluorescence. In the first technique, a single, strongly temperature-dependent fluorophore, rhodamine B, is used as the basis for

Phase Transitions Within the Isolated Polymer Molecule: Coupling of the Polymer Threading a Membrane Transition to the Helix-Random Coil, the Collapse, the Adsorption, and the Equilibrium Polymerization Transitions

September 22, 2003
Author(s)
Edmund A. DiMarzio, John J. Kasianowicz
The polymer threading a membrane transition (PTM), which is a first-order thermodynamic phase transition for an isolated linear polymer in the limit of infinite molecular weight, is coupled to the other 4 phase transitions of the isolated polymer molecule

Kinetic Isotope Effects in the Active Site of B-Subtilis Chorismate Mutase

September 15, 2003
Author(s)
S. E. Worthington, A. E. Roitberg, Morris Krauss
Kinetic Isotope Effects are determined for the enzyme-catalyzed Claisen rearrangement of chorismate to prephenate using computational methods. The reported kinetic isotope effects compare reasonably well with the few available experimental values. The

Cloning and Expression of the Gene for a Novel Protein From Mycobacterium Smegmatis With Functional Similarity to Eukaryotic Calmodulin

September 1, 2003
Author(s)
Prasad T. Reddy, C R. Prasad, P H. Reddy, D J. Reeder, K H. McKenney, H Jaffe, M N. Dimitrova, A Ginsburg, A Peterkofsky, P S. Murthy
The calmodulin-like protein from Mycobacterium smegmatis (MSM-CAMLP) was purified to homogeneity with a yield of about 1 g from 70 g of cells. Peptide sequence analysis of the MSM-CAMLP was used to design degenerate oligonucleotides for the eight

Crystal Structure of the YchF Protein Reveals Binding Sites for GTP and Nucleic Acid

July 1, 2003
Author(s)
A Teplyakov, G Obmolova, S Y. Chu, J Toedt, E Eisenstein, A J. Howard, G L. Gilliland
The bacterial protein encoded by the gene ychF is 1 of 11 universally conserved GTPases, and the only one whose function is unknown. The crystal structure determination of YchF was sought to help with the the functional assignment of the protein. The YchF

Genomic DNA of Nostoc Commune (Cyanobacteria) Becomes Covalently Modified During Long-Term (Decades) Desiccation But Is Protected From Oxidative Damage and Degradation

June 15, 2003
Author(s)
B Shirkey, N J. McMaster, Sue C. Smith, D J. Wright, H Rodriguez, Pawel Jaruga, M Birincioglu, R F. Helm, M Potts
Genomic DNA of Nostoc commume (Cyanobacteria) became covalently modified during decades of desiccation. Amplification of gene loci from desiccated cells required pretreatment of DNA with N-phenacylthiazolium bromide; a reagent that cleaves DNA- and protein

Specific Antibody-DNA Interaction: A Novel Strategy for Tight DNA Recognition

May 27, 2003
Author(s)
S M. Di Pietro, J M. Centeno, M L. Cerutti, M F. Lodeiro, D U. Ferreiro, L G. Alonso, Frederick P. Schwarz, F Goldbaum, G de Prat-Gay
Taking advantage of the extreme stability of a protein-DNA complex, we obtained highly specific monoclonal antibodies against a predetermined palindromic double stranded DNA sequence, corresponding to the binding site of the E2 transcriptional regulator of
Displaying 876 - 900 of 1174