A comparative analysis of the genomes ofDrosophila melanogaster, Caenorhabditis
elegans, and Saccharomyces cerevisiae—and the proteins they are predicted to encode—was …

… pH 5-7 and pH 3-10 mixture was not successful since in the presence of urea, the basic
region of the pH … of the pH gradient, the few moderately basic proteins which entered the gel …

… gradient because the high concentration of urea causes large changes in pH as well as the
… the pH gradient does not extend significantly above pH 7. Extension of this pH gradient to pH …

The evolutionary advent of uterine support of embryonic growth in mammals is relatively
recent. Nonetheless, striking differences in the earliest steps of embryogenesis make it difficult …

… , the major transcription unit with start site (O) and presumed translation start site (AUG) and
the … cannot be due to leakiness of the ptc allele because the same delay is o):,served in ptc1 …

… We injected these embryos with 50 mM BrdU (pH 9) during G2 of cycle 14, allowed … and
O’Farrell(i989). DNA preparations for Southern blots were carried out as in Lehner and O’Farrell (…

… and lysed in hypotonic buffer (10 mM HEPES at pH 7.3, 6 mM β-mercaptoethanol, complete
… We are grateful to members of the Andino and O'Farrell labs for support and discussions; G. …

… We are grateful to the people in the O’Farrell lab for their support. In particular, we thank
Steve DiNardo, Jim Jaynes, Jill Jongens, Bill Kalionis, Delia Lakich, Christian Lehner, and John …

The string (sfg) locus of Drosophila encodes a factor that is thought to trigger mitosis by
activating the p34CdC2 protein kinase. stg is required for mitosis early in development and is …

… Furthermore, the completed Ubx transcript has a very short lifetime (AW Shermoen and
PH O'Farrell, unpublished data), so that the majority of the life span of a Ubx transcript is …