Promoters that contain the extended −10 region normally have a −35 element less well conserved or absent, hence making these sequences dispensable for promoter function.
The loop region is characterised by a high insertion/deletion polymorphism (indel), which is a valuable feature making these sequences suitable for the design of highly specific oligonucleotide probes [42].
Conversely, there are 15 bulge sequences which did not appear in the database at all, making these sequences the least frequently occurring.
We employ several DNA barcode-like markers in our biodiversity survey of Hawaiian red algae and are making these sequences and associated specimen data available through HADB as a reference database.
ISs encode the protein Transposase, which facilitates the excision and reinsertion of ISs in genomes, making these sequences a type of class I ("cut-and-paste") Mobile Genetic Elements.
Surprisingly, B. vietnamiensis and Burkholderia sp. 383 deduced EcfA sequences were found to group apart from other EcfA-like sequences belonging to the Burkholderia (Fig. 4); making these sequences closer relatives of a Ralstonia homologous sequence.
