ChEBI: LL-2,6-diaminopimelic acid is a 2,6-diaminopimelic acid in which both chiral centres have S configuration. It is a component of bacterial cell wall. It has a role as an Escherichia coli metabolite. It is a conjugate acid of a LL-2,6-diaminopimelate(2-). It is a tautomer of a (2S,6S)-2,6-diaminopimelic acid dizwitterion.