Brownlee A G
CSIRO, Division of Animal Production, Blacktown, NSW, Australia.
Nucleic Acids Res. 1989 Feb 25;17(4):1327-35. doi: 10.1093/nar/17.4.1327.
The genomic DNA of an anaerobic rumen phycomycete of the genus Neocallimastix has been purified and characterized. The non-repetitive fraction of the DNA has a G.C content of only 13%. The ribosomal RNA genes are highly reiterated, making up about 30% of the total DNA, and are evident as a more G.C-rich satellite with a repeating unit of about 9.4 kilobases (Kb). A.T-rich regions of DNA are highly dispersed and possess some sequence complexity. Chemical analysis of the DNA constituents reveals no evidence of modified bases. The genome of this anaerobic fungus has the highest A.T content of any organism so far described.
新美鞭菌属一种厌氧瘤胃藻状菌的基因组DNA已被纯化并进行了特性分析。该DNA的非重复部分的鸟嘌呤-胞嘧啶(G.C)含量仅为13%。核糖体RNA基因高度重复,约占总DNA的30%,并表现为一个富含G.C的卫星序列,其重复单元约为9.4千碱基(Kb)。富含腺嘌呤-胸腺嘧啶(A.T)的DNA区域高度分散且具有一定的序列复杂性。对DNA成分的化学分析未发现修饰碱基的证据。这种厌氧真菌的基因组是迄今为止所描述的所有生物体中A.T含量最高的。