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曾有不少学者认为链球菌属的D群链球菌中的粪链球菌和屎链球菌与其他链球菌的生物学性状不一致,不应归在同一属内。作者对这两种链球菌以及其他几种D群链球菌做了细胞壁粘肽分子组成、DNA～RNA杂交、DNA硷基组成等的研究后,认为它们确实不是一类细菌。所以把它们从链球菌属划出,独立为肠球菌属,分别以粪肠球菌和屎肠球菌命名之,且做了定义性描述。肠球菌属:(Enterococcus)卵园形,呈单、双或短链,细菌常沿短链方向伸长,革兰氏阳性,可以有动力。兼性厌氧。最适生长温度为35℃。在6.5%NaCl和pH9.6中生长。发酵型代谢,发酵葡萄糖的最终产物是L-乳酸。过氧化氢酶通常阴性。与D群抗血清反应,某些菌株与Q群抗血清反
There have been many scholars believe that the Streptococcus Streptococcus group Streptococcus faecalis and Streptococcus faecalis and other Streptococcus biological characteristics are inconsistent and should not belong to the same genus. The authors of these two streptococci and several other D group Streptococcus do peptide mucopolysaccharide molecules, DNA ~ RNA hybridization, DNA base composition study, they are not really a class of bacteria. So they are drawn from the genus Streptococcus is an independent Enterococcus, respectively, Enterococcus faecalis and Enterococcus faecium named, and made a definitive description. Enterococcus: (Enterococcus) oval-shaped, was single, double or short chain, bacteria often extend along the short chain direction, Gram-positive, you can have power. Concurrent anaerobic. The optimum growth temperature is 35 ℃. Grow in 6.5% NaCl and pH 9.6. Fermentative metabolism, the final product of fermentation of glucose is L-lactic acid. Catalase is usually negative. React with Group D antiserum, some with anti-Q group antiserum