In contrast, obligate intracellular bacteria have few opportunities to acquire new genes due to being reproductively confined to a eukaryotic host cell.
In contrast, obligate mutualists that supply essential amino acids to their animal hosts (e.g., Buchnera, Ishikawaella, Sulcia, Hodgkinia, Carsonella, Portiera, Evansia, Nasuia, Zinderia, etc).
In contrast, obligate parasites and those worms in which the free-living stage in the environment is enclosed within a resistant egg, possess a GA-binding Hsp-90.
In contrast, obligate endophytic bacteria face a lot less competition reflected in a less metabolite-rich arsenal [ 18], but they may produce other specific metabolites supporting the or needed for the interaction with the host.
In contrast to obligate parasites such as M. tuberculosis and M. leprae, NTM are present in the environment as saprophytes causing disease opportunistically [ 2, 3].
In contrast the obligate tetramerization of the most popular RFP DsRed [ 6], isolated from Discosoma sp., has impeded its widespread use in mice [ 3].
In contrast, the obligate parasite reverted to single mating, because multiple mating apparently did not provide benefits to the parasitic lifestyle.
By contrast, an obligate predator, the mink, selects a diet more similar to that of dogs, consisting of 35% protein by energy (Mayntz et al. 2009).
Comparison of the four strains suggests that Wolbachia, in contrast to obligate symbionts such as Buchnera, have highly flexible gene content, despite their generally small genome sizes e.g. [ 16].
In stark contrast, the obligate intracellular bacteria Anaplasma phagocytophilum and Ehrlichia chaffeensis have retained only 3 HKs and 3 RRs (Rikihisa 2010; Wakeel et al. 2010; Cheng et al. 2006; Kumagai et al. 2006; Lai et al. 2009).
