Itrogen cycles in each of these environments where they modify their morphology, metabolism, and light-harvesting systems for survival in their respective niches. To date, genomes of 55 cyanobacterial strains in 21 genera have been completed or are under construction (National Center for Biotechnology Information). These cyanobacterial genomes are diverse in size, ranging from 1.66 to 9.1 Mbp. The
S far. This large array of genomic data is distributed into nine single-copy plasmids that code for >25 of the putative ORFs. Heavy duplication of genes related to DNA repair and recombination (primarily recA) and transposable elements could account for genetic mobility and genome expansion. We discuss points of interest for the biosynthesis of the unusual pigments chlorophyll d and -carotene and
Sectioned. Tissue sections were stained by a standard immunoperoxidase technique of avidin-biotinylated enzyme complex for the expression of VWF with a purified polyclonal rabbit antibody to VWF and, for the expression of MPO, with a purified polyclonal rabbit antibody to MPO.Statistical Analysis. Experimental conditions were compared byHMVEC and EGM-2 medium were obtained from Clonetics (Walkersv
Sectioned. Tissue sections were stained by a standard immunoperoxidase technique of avidin-biotinylated enzyme complex for the expression of VWF with a purified polyclonal rabbit antibody to VWF and, for the expression of MPO, with a purified polyclonal rabbit antibody to MPO.Statistical Analysis. Experimental conditions were compared byHMVEC and EGM-2 medium were obtained from Clonetics (Walkersv
Ith a lambda-phage cI motif are also likely correlated with the extra recA (22, 24). The presence of multiples copies of recA and related enzymes could account for gene duplication and/or integration of foreign genes that would lead to genome expansion. Based on the comparative analysis of many genomes, Konstantinidis et al. (21) hypothesized that species with large genomes may dominate noncompeti
Of the A. marina chromosome nucleotide sequence (vs. itself) shows 18.7 of the sequence (not including the original, duplicated sequence) has a homology of greater than E 1 10 10 to another location on the chromosome. This is significantly higher than the 11.2 and 5.8 duplication in Synechocystis PCC6803 and Nostoc sp. PCC7120, respectively. A. marina actually has far fewer duplicated regions t
Oteins including the plant and Prochlorococcus enzymes responsible for the synthesis of Chl b from chlorophyllide a, chlorophyllide a oxygenase (CAO) (Fig. 2) (31). Five putative proteins containing a CAO-type Rieske-FeS motif are encoded by A. marina. Most of the candidate genes in A. marina fall into orthologous clusters with other hypothetical cyanobacterial proteins (Fig. 2). Only one protein,
Of the A. marina chromosome nucleotide sequence (vs. itself) shows 18.7 of the sequence (not including the original, duplicated sequence) has a homology of greater than E 1 10 10 to another location on the chromosome. This is significantly higher than the 11.2 and 5.8 duplication in Synechocystis PCC6803 and Nostoc sp. PCC7120, respectively. A. marina actually has far fewer duplicated regions t