Now showing items 71-80 of 1438
Resolution in the receptor binding of putative [mu] and [kappa] opiates
(Elsevier, 1984-05-28)
Conditions for the stereospecific binding of 3H-ethylketocyclazocine and 3H-etorphine were established in membranes from rat and pigeon brain. In displacing the specific binding of the radiolabeled ligands, putative [mu] ...
Selection of rare event cells expressing [beta]-galactosidase
(Elsevier, 1991-06)
The ACAS Interactive Laser Cytometer was used to screen and select mammalian cells in culture infected with a retrovirus construct containing the Escherichia coli lacZ and neomycin resistance genes. The product of expression ...
Synthesis and maturation of phage P22 DNA : II. Properties of temperature-sensitive phage mutants defective in DNA metabolism
(Elsevier, 1968-06-28)
Three temperature-sensitive mutants of phage P22 have been isolated which are defective in phage DNA metabolism. After infection at restrictive temperature, one mutant (ts 12.1) fails to synthesize measurable quantities ...
Sequence of the fourth and fifth Photosystem II Type I chlorophyll a/b -binding protein genes of Arabidopsis thaliana and evidence for the presence of a full complement of the extended CAB gene family
(Kluwer Academic Publishers; Springer Science+Business Media, 1992-08)
A second locus ( Lhb1B ) encoding Photosystem II Type I chlorophyll a/b -binding (CAB) polypeptides was identified in Arabidopsis thaliana . This locus carries two genes in an inverted orientation. The predicted sequences ...
Human L1 retrotransposition: insights and peculiarities learned from a cultured cell retrotransposition assay
(Kluwer Academic Publishers; Springer Science+Business Media, 1999-11)
Long Interspersed Nuclear Elements (L1s or LINEs) are the most abundant retrotransposons in the human genome, and they comprise approximately 17% of DNA. L1 retrotransposition can be mutagenic, and deleterious insertions ...
Amylin increases cyclic AMP formation in L6 myocytes through calcitonin gene-related peptide receptors
(Elsevier, 1991-06-14)
The cellular function of amylin is investigated in L6 myocytes, a rat skeletal muscle cell line. Both rat amylin and human amylin-amide acutely cause a dose-dependent increase in cyclic AMP formation in L6 myocytes. 100 ...
Benzoylarginine peptidase and iminopeptidase profiles of Treponema denticola strains isolated from the human periodontal pocket
(Springer-Verlag; Springer-Verlag New York Inc., 1986-03)
Seven clinical isolates and the ATCC strain 35405 of Treponema denticola , obtained from human periodontal pockets, were studied for peptidase activity with several chromogenic compounds as substrates. The cell sonicates ...
Rates of evolution on the time scale of the evolutionary process
(Kluwer Academic Publishers; Springer Science+Business Media, 2001-11)
A generational time scale, involving change from one generation to the next, is the time scale of evolution by natural selection. Microevolutionary and macroevolutionary patterns reflect this process on longer time scales. ...
Characterization of radish mitochondrial atpA: influence of nuclear background on transcription of atpA -associated sequences and relationship with male sterility
(Kluwer Academic Publishers; Springer Science+Business Media, 1990-11)
We have previously shown that the mitochondrial gene atpA , encoding the α subunit of F 1 ATP synthase, is associated with DNA rearrangements and nuclear-specific transcript patterns in the male-sterile cytoplasm of Ogura ...
Enzyme stereoselectivity: The reversible reaction catalyzed by 2-keto-4-hydroxyglutarate aldolase of Escherichia coli
(Elsevier, 1975-08-04)
SummaryThe condensation of [3-3H3]-pyruvate with glyoxylate in 3HOH to form [3-3H2]-ketohydroxyglutarate was catalyzed by ketohydroxyglutarate aldolase of Escherichia coli to study the stereochemical behavior of the enzyme. ...