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Schematic representation of a hypothetical growth mechanism as it may occur in multiple-LT-deletion mutants. The murein glycan strands are indicated by rods, and the peptide cross bridges are indicated by bars (acceptor peptide) and arrows (donor peptide). It is proposed that a docking strand released by the action of endopeptidases during the insertion of a murein triplet precursor is directly reused as a central primer strand for the formation of a new murein triplet.
