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Homology model of tetrameric AtmtSSB1. (A) Homology model of AtmtSBB1 illustrating its oligonucleotide/oligosaccharide/binding (OB)-fold and an acid C-terminal tail. (B) An amino acid sequence alignment illustrates that the C-terminal tail of AtmtSSB2 is composed of two aromatic amino acids, whereas AtmtSSB1 is acidic.
