title: Diaminopimelic acid profiles of alkalophilic and alkaline-resistant strains of Actinomycetes.
abstract: Twenty alkalophilic actinomycetes with optimum growth pH of 9.0 to 9.5 were isolated. Although these new isolates morphologically closely resembled conventional streptomycetes containing LL-diaminopimelic acid, nine out of 20 isolated contained meso-diaminopimelic acid. Among 420 International Streptomyces Project (ISP) Streptomyces strains tested for their maximum growth pH, only 6 strains grew at pH 11.5. Of these six strains, three strains, S. caeruleus ISP 5103, A. alborubidus ISP 5465 and S. autotrophicus ISP 5011 contained meso-diaminopimelic acid.
mesh_terms: D000192:Actinomycetales / Q000378:metabolism*; D000225:Adenine / Q000378:metabolism; D000599:Amino Acids, Diamino / Q000096:biosynthesis*; D002473:Cell Wall / Q000378:metabolism; D003960:Diaminopimelic Acid / Q000096:biosynthesis*; D005998:Glycine / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D013302:Streptomyces / Q000378:metabolism
chemical_list: D000599:Amino Acids, Diamino; D003960:Diaminopimelic Acid; D000225:Adenine; D005998:Glycine