白喉棒状杆菌Corynebacterium diphtheriae ATCC菌种
中国微生物菌种查询网 / 2018-08-29 14:51:47

白喉棒状杆菌Corynebacterium diphtheriae ATCC菌种
       中国微生物菌种查询网白喉棒状杆菌Corynebacterium diphtheriae,菌体大小为(0.3~0.8μm)×(1~5μm),细长稍弯,粗细不一,菌体一端或两端排列呈棒状,排列不规则,常呈L、V、X、T等字形或排成栅栏状。革兰氏染色阳性,无荚膜、鞭毛,不产生芽胞;用美兰液染色菌体着色不均匀,常呈着色深的颗粒;用奈瑟氏染色菌体染成黄褐色,一端或二端染成蓝色或深蓝色颗粒,称为异染颗粒(Metachromatic granules),其主要成分是磷酸盐和核糖核酸,是本菌形态特征之一  。
Corynebacterium diphtheriae (Kruse) Lehmann and Neumann 拉丁名
(ATCC? 27011?) 统一编号
Strain Designations 别名 C7 s (gamma) tox (-)
Isolation 分离源 Lysogenic: carries temperate phage gamma tox -, lytic on Corynebacterium diphtheriae ATCC 27010.
Biosafety Level 生物安全等级 2
Biosafety classification is based on U.S. Public Health Service Guidelines, it is the responsibility of the customer to ensure that their facilities comply with biosafety regulations for their own country.
Product Format 提供形式 freeze-dried
Preceptrol? no
Type Strain 模式菌株 no
Medium 培养基 ATCC? Medium 611: PGT medium
Growth Conditions 生长条件 
Temperature 培养温度 : 37.0°C
Name of Depositor 寄存者 WL Barksdale
References 参考文献 Holmes RK, Barksdale L. Genetic analysis of tox+ and tox- bacteriophages of Corynebacterium diphtheriae. J. Virol. 3: 586-598, 1969. PubMed: 4978942
Barksdale L. Corynebacterium diphtheriae and its relatives. Bacteriol. Rev. 34: 378-422, 1970. PubMed: 4322195
      本菌的致病物质主要是白喉毒素。白喉毒素是含有两个二硫键的多肽链,分子量为62,000。经蛋白酶水解后,可分为A和B两个片段,中间仍由二硫键联接。B片段,无酶活性,但能与宿主易感细胞表面特异性受体结合,并通过易位作用使A片段进入细胞。A片段具有酶活性,能将氧化型烟酰胺腺嘌呤二核苷(NAD+)水解为烟酰胺及腺嘌呤二磷酸核糖(ADPR)两部分,并催化延伸因子-2(Elongation factor-2,EF-2)与ADPR共价结合,使EF-2失去转位活性,从而中止肽-tRNA及mRNA在核糖体上由受位转移至供位,肽链不能延长,细胞蛋白质合成受阻,细胞死亡,病变产生。

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