Actin-related proteins in Anabaena spp. and Escherichia coli

Article Abstract:

The enterobacterium Escherichia coli and the cyanobacteria Anabaena cylindrica and A. variabilis contain prokaryotic actin-related proteins that are biochemically similar to the actin present in eukaryotes. Cellular extracts of the bacteria cross-react with monoclonal antibodies against actin and bind to acetone powder and DNase I extracts. The cells also bind to TRITC-phalloidin that specifically binds to actin. Western blot analysis shows a 60, 43 and 35 kDa band in E. coli cellular extracts, and a 45 and 40 kDa band in A. cylindrica and A. variabilis cellular extracts.

Escherichia coli, Identification and classification, Bacterial proteins

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Pleiotropic effects of potassium deficiency in a heterocystous, nitrogen-fixing cyanobacterium, Anabaena torulosa

Article Abstract:

A study was conducted to analyze the pleiotropic effects of potassium deficiency in the cyanobacterium, Anabaena torulosa. Growth and nitrogenase activity were determined based on chlorophyll a content. Photosynthetic pigment levels were computed from the absorption spectra of dilute suspensions of whole filaments. Results indicated that deprivation led to multiple metabolic impairments during nitrogen-based and diazotrophic growth.

Potassium (Chemical element), Potassium

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Actin-related proteins in Actinobacillus pleuropneumoniae and their interactions with actin-binding proteins

Article Abstract:

Research was conducted on the purification and characterization of three prokaryotic actin-related protein isoforms. These proteins, with a molecular weight of 43000 and isoelectric point values of 5.8, 6.15 and 6.2, behaved similarly to eukaryotic actin in their biochemical and immunological properties.

Mexico, Methods, Analysis, Usage, Observations, Prokaryotes, Protein binding, Actin, Muscle proteins, Cytoskeletal proteins, Isoenzymes, Immunoenzyme technique, Immunoenzyme techniques

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