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. 2024 Dec 12;22(6):e70005. doi: 10.1111/gbi.70005

FIGURE 4.

FIGURE 4

Multiple sequence alignments of the superoxide dismutases encoded on the genome of Pseudanabaena sp. PCC7367. (A) The CuZnSOD protein sequence has a positively charged N‐terminal sequence followed by a potential transmembrane segment and AxA signal peptidase cleavage site, which suggests export from the cytosol via the Sec secretory system. (B) The N‐terminus of the Pseudanabaena MnSOD carries a potential twin arginine signal (twin RR), transmembrane segment and signal peptidase cleavage site (AxA). The second methionine residue following the cleavage site could indicate a second site of initiation of translation, which may produce a cytosolic form of MnSOD starting with MGLT (highlighted in orange). (C) FeSOD lacks a potential targeting sequence. Metal‐binding sites are highlighted in red. NCBI accessions of each sequence are as follows: CuZnSODS (WP_015163683.1, BAC89922.1, WP_006457095.1, WP_011619688.1 and WP_015114498.1), MnSODs (AFY68900.1, QUX80117.1, WP_250121708.1, WP_073632316.1 and WP_010994247.1) and FeSODS (WP_015166022.1, WP_010997089.1, WP_010872652.1, WP_010469685.1 and WP_006041934.1).