pH Corrections and Protein Ionization in Water/Guanidinium Chloride

pH corrections and protein ionization in water/guanidinium chloride.

More than 30 years ago, Nozaki and Tanford reported that the pK values for several amino acids and simple substances in 6 M guanidinium chloride differed little from the corresponding values in low salt (Nozaki, Y., and C. Tanford. 1967. J. Am. Chem. Soc. 89:736-742). This puzzling and counter-intuitive result hinders attempts to understand and predict the proton uptake/release behavior of prot...

NIST Ionization Chamber “A” Sample-Height Corrections

For over 30 years scientists in the NIST radioactivity group have been using their pressurized ionization chamber "A" (PIC "A") to make measurements of radioactivity and radioactive half-lives. We now have evidence that some of those reported measurements were incorrect due to slippage of the source positioning ring over time. The temporal change in the holder caused an error in the source-heig...

pH corrections in chemical denaturant solutions.

unknown cellular flanking DNA sequences from foreign integrants. Cell Mol. Life Sci. 54, 1403–1411. 5. Iwahana, H., Tsujisawa, T., Katashima, R., Yoshimoto, K., and Itakura, M. (1994) PCR with end trimming and cassette ligation: A rapid method to clone exon-intron boundaries and a 5 -upstream sequences of genomic DNA based on a cDNA sequence. PCR Methods Appl. 4, 19–25. 6. Jones, D. H., and Win...

Additions and Corrections

Additions and corrections to names published in Cercospora in Iran

In this paper the taxonomy of some previously reported taxa as Cercospora apii s.lat. in Iran, is discussed and some new records are listed. Cercospora species on Abelia grandiflora (C. deutziae), Erythrina crista-galli (C. erythrinicola), Euphorbia heterophylla (C. pulcherrimae) and Zanthedeschia aethiopica (C. richardiicola) are new for mycobiota of Iran. Cercospora iridis which was previousl...