Now showing items 1-10 of 42
Individual and population sex allocation patterns
(Elsevier, 1987-02)
A variety of sex allocation models is considered in which (i) the reproductive returns on investment in males differ from the returns on investment in females, (ii) the amounts of resources available for reproduction vary ...
Identification and characterization of a human transthyretin variant
(Elsevier, 1987-10-14)
An apparent Mr variant of plasma transthyretin (TTR), previously detected using 2-D PAGE, is the first reported occurrence of this type of human TTR variant. We characterized the variant TTR to determine the nature of this ...
On the dynamic order of structured Escherichia coli growth models
(Wiley Subscription Services, Inc., A Wiley Company, 1987-04-20)
Reliable dynamic descriptions of cellular growth are important for many practical applications including bioreactor design and control. A chemically structured growth model of Escherichia coli has been formulated and ...
Palearctic predator invades North American Great Lakes
(Springer-Verlag, 1987-12)
Bythotrephes cederstroemii Schoedler, a predatory freshwater zooplankter (Crustacea: Cladocera), was first found in the Laurentian Great Lakes in December 1984. The first individuals were from Lake Huron, followed in 1985 ...
Occurence, identification and possible significance of ornithine lipid in Thiobacillus ferrooxidans
(Elsevier, 1987-02-13)
An ornithine containing aminolipid has been found in grown in ferrous sulfate medium, which was purified and estimated at four main phases of growth. GLC analysis of ornithine lipid has revealed the existence of mainly ...
Unicircular structure of the Brassica hirta mitochondrial genome
(Springer-Verlag, 1987-03)
Restriction mapping studies reveal that the mitochondrial genome of white mustard ( Brassica hirta ) exists in the form of a single circular 208 kb chromosome. The B. hirta genome has only one copy of the two sequences ...
Evidence for nonregulatory trehalase activity in Dictyostelium discoideum
(Springer-Verlag, 1987-03)
An in vitro activation treatment, stimulatory to the regulatory cytoplasmic trehalase of Saccharomyces cerevisiae , had no effect on the lysosomal trehalase of Dictyostelium discoideum . Concentrations of cAMP that produced ...
Chloroplast DNA from lettuce and Barnadesia (Asteraceae): structure, gene localization, and characterization of a large inversion
(Springer-Verlag, 1987-03)
We have cloned into plasmids 17 of 18 lettuce chloroplast DNA SacI fragments covering 96% of the genome. The cloned fragments were used to construct cleavage maps for 10 restriction enzymes for the chloroplast genomes of ...
Vacuolar (lysosomal) trehalase of Saccharomyces cerevisiae
(Springer-Verlag, 1987-09)
In the yeast Saccharomyces cerevisiae the PEP4 gene product, protease A, is responsible for activating all soluble vacuolar (lysosomal) enzymes. These vacuolar enzymes remain inactive in pep4 mutants. Vacuolar trehalase ...
[lambda] N antitermination system: Functional analysis of phage interactions with the host NusA protein
(Elsevier, 1987-04-20)
Coliphage [lambda] gene expression is regulated temporally by systems of termination and antitermination of transcription. The [lambda]-encoded N protein (pN) acting with host factors (Nus) at sites (nut) located downstream ...