cell consisting have wall can cross-bind l-lysine results l-lysine pentaglycine results via can cross-bind l-lysine pentaglycine via can contain gram- can contain gram- results can gram- results are can either glycocalyx have binds can cross-bind diaminopimelic directly binds diaminopimelic directly results can cross-bind diaminopimelic results can gram+ results binds d-alanine directly pentaglycine via can consisting cross-bind nam can gram resistant bacteria can have are capsule either related