Karin Lydersen

Northwestern University | NU · Department of Journalism

Northerly Island, like much of Chicago's 30-mile lakefront, is a triumph of artifice, created from fill and debris, including detritus from the city's devastating 1871 fire. It was to be the first in a chain of islands proposed by architect Daniel Burnham in his 1909 Plan of Chicago. More than a century later, Burnham's vision continues to guide de...

Around three dozen US cities with populations of more than 100,000 in 1950 have lost at least 20% of their residents. Deborah and Frank Popper have argued that their Buffalo Commons concept, originally conceived as a means to revivify the depopulating Great Plains, can be adapted for use in these new urban prairies. When it was announced in 2002, B...

We describe the first example of a predominantly nuclear protein which during mitosis becomes part of the mitotic apparatus. This protein has been termed the nuclear-mitotic apparatus (NuMA) protein. In interphase cells NuMA protein is restricted to the nucleus and is a constituent of isolated nuclear matrices, but in mitotic cells it is observed b...

The structure of the bacterial chromosome was investigated after introducing breaks in the DNA with gamma irradiation. It is demonstrated that irradiation of the chromosome in the cell prior to isolation results in partial unfolding of the isolated condensed DNA, while irradiation of the chromosome after it is released from the cell has no demonstr...

The in vitro transcription of DNA in isolated nucleoids from Escherichia coli was investigated. The purpose of the study was to determine the effects on DNA transcription of using as template a condensed bacterial chromosome. To compare the template capacity of the DNA in the condensed chromosome with that of the completely unfolded chromosome, ver...