Pre_GI Island

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n1_4mer:GRV/n1_4mer:RV = (Global Relative Variance of OU patterns) / (Local Relative Variance of OU patterns)

n0_4mer:D = Distance between local and global OU patterns

n0_4mer:PS = Distance between 2 strands of same DNA molecule

Selected loci indicated by large D, increased GRV associated with decreased RV and moderate increase in PS




NC_007413: Anabaena variabilis ATCC 29413, complete genome

NCBI: NC_007413

Host Lineage: Anabaena variabilis; Anabaena; Nostocaceae; Nostocales; Cyanobacteria; Bacteria

General Information: These cyanobacteria are bluegreen algae that are capable of fixing carbon and nitrogen. They form long filaments and can be found worldwide in various aquatic environments as well as some terrestrial ones. These bacteria can form a variety of differentiated cell types, including spore-like cells (akinetes), small motile filaments (hormongia) and most importantly, heterocysts that are nitrogen-producing cells. The heterocyst produces multiple layers outside of its cell wall, shuts down photosystem II in order to inhibit oxygenic photosynthesis and ramps up metabolism in order to use up the oxygen present. Heterocysts donate fixed nitrogen compounds as amino acids to neighboring cells and in return receive a photosynthetically produced carbon source such as sucrose. These organisms produce toxic blooms in aquatic environments that are harmful or fatal to animals and humans due to the various cyanotoxins they produce. Anabaena variabilis is a filamentous heterocyst-forming cyanobacterium that fixes nitrogen and CO2 using the energy of sunlight via oxygen-evolving plant-type photosynthesis. In addition, this organism has been studied extensively for the production of hydrogen using solar energy.



Islands with an asterisk (*) contain ribosomal proteins or RNA related elements and may indicate a False Positive Prediction!

#StartEndLengthIsland TextGRV_RVDPSNeighboursClusterSub ClusterBLASTNKey Word ConfirmationOther DB ConfirmationDownload Island
1868678*88796119284Island text1.5169727.580945.0633Neighbours14BLASTN868678.gbk
21405817*142811722301Island text1.4120722.805229.023Neighbours21BLASTN+IslandViewer 1405817.gbk
31570000*159209922100Island text1.4960524.361636.3199Neighbours21BLASTN1570000.gbk
42312735233130018566Island text1.5387623.741536.5848Neighbours14BLASTNIslandViewer 2312735.gbk
52961611298470023090Island text3.2222822.580316.9265Neighbours21BLASTN+2961611.gbk
63168931319327024340Island text1.6702532.858535.8961Neighbours21BLASTN+IslandViewer 3168931.gbk
74278252*430357825327Island text1.7492432.860727.7809Neighbours21BLASTN4278252.gbk
85264463*528667022208Island text1.6463229.880746.2487Neighbours14BLASTN5264463.gbk
95742406576609923694Island text1.4245924.337339.9988Neighbours21BLASTN5742406.gbk