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Virtual 2D map of cyanobacterial proteomes

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  • Tapan Kumar Mohanta
  • Yugal Kishore Mohanta
  • Satya Kumar Avula
  • Amilia Nongbet
  • Ahmed Al-Harrasi

Abstract

Cyanobacteria are prokaryotic Gram-negative organisms prevalent in nearly all habitats. A detailed proteomics study of Cyanobacteria has not been conducted despite extensive study of their genome sequences. Therefore, we conducted a proteome-wide analysis of the Cyanobacteria proteome and found Calothrix desertica as the largest (680331.825 kDa) and Candidatus synechococcus spongiarum as the smallest (42726.77 kDa) proteome of the cyanobacterial kingdom. A Cyanobacterial proteome encodes 312.018 amino acids per protein, with a molecular weight of 182173.1324 kDa per proteome. The isoelectric point (pI) of the Cyanobacterial proteome ranges from 2.13 to 13.32. It was found that the Cyanobacterial proteome encodes a greater number of acidic-pI proteins, and their average pI is 6.437. The proteins with higher pI are likely to contain repetitive amino acids. A virtual 2D map of Cyanobacterial proteome showed a bimodal distribution of molecular weight and pI. Several proteins within the Cyanobacterial proteome were found to encode Selenocysteine (Sec) amino acid, while Pyrrolysine amino acids were not detected. The study can enable us to generate a high-resolution cell map to monitor proteomic dynamics. Through this computational analysis, we can gain a better understanding of the bias in codon usage by analyzing the amino acid composition of the Cyanobacterial proteome.

Suggested Citation

  • Tapan Kumar Mohanta & Yugal Kishore Mohanta & Satya Kumar Avula & Amilia Nongbet & Ahmed Al-Harrasi, 2022. "Virtual 2D map of cyanobacterial proteomes," PLOS ONE, Public Library of Science, vol. 17(10), pages 1-21, October.
    • Handle: RePEc:plo:pone00:0275148
    DOI: 10.1371/journal.pone.0275148
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    1. Birger Rasmussen & Ian R. Fletcher & Jochen J. Brocks & Matt R. Kilburn, 2008. "Reassessing the first appearance of eukaryotes and cyanobacteria," Nature, Nature, vol. 455(7216), pages 1101-1104, October.
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