1,721,038 research outputs found
Characterization of bofA, a gene involved in intercompartmental regulation of pro-sigmaK processing during sporulation in Bacillus subtilis
No full textCharacterization of bofA, a gene involved in intercompartmental regulation of pro-sigmaK processing during sporulation in Bacillus subtilis
No full text
An additional GerE-controlled gene encoding an abundant spore coat protein from Bacillus subtilis
No full textAn additional GerE-controlled gene encoding an abundant spore coat protein from Bacillus subtilis
No full textAN ADDITIONAL GERE-CONTROLLED GENE ENCODING AN ABUNDANT SPORE COAT PROTEIN FROM BACILLUS-SUBTILIS
No full textWe describe the identification and characterization of a gene, herein designated cotG, encoding an abundant coat protein from the spores of Bacillus subtilis. The cotG open reading frame is 195 codons in length and is capable of encoding a polypeptide of 24 kDa that contains nine tandem copies of the 13-amino-acid long, approximately repeated sequence H/Y-K-K-S-Y-R/C- S/T-H/Y-K-K-S-R-S. cotG is located at 300° on the genetic map close to another coat protein gene, cotB. The cotG and cotB genes are in divergent orientation and are separated by 1.3 kb. Like the promoter for cotB, the cotG promoter is induced at a late stage of sporulation under the control of the RNA polymerase sigma factor σ(K) and the DNA-binding protein GerE. The -10 and -35 nucleotide sequences of the cotG promoter resemble those of other promoters recognized by σ(K)-containing RNA polymerase, and centered 70 bp upstream of the apparent start site is a sequence that matches the consensus binding site for GerE. Spore coat proteins from a newly constructed cotG null mutant lack not only CotG but also CotB, a finding that suggests that CotG may be a morphogenetic protein that is required for the incorporation of CotB into the coat
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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