- 作者: 高銘欽; Brent A. French; Simon H. Chang; 何春富
- 作者服務機構: 國防醫學院生物化學研究所; 美國路易斯安那州立大學生化系
- 中文摘要:
利用Okayama及Berg氏法,本實驗室已合成一段免肌磷酸果糖激?(phosphofructokinase﹔PFK﹔EC 2.7.1.11)
cDNA (pOB/RmPFKcDNA),經由分子轉殖及核酸序列分析比較的結果,顯示此段cDNA對應於四分之一段PFK之胺
酸序列(約有181胺酸,靠近碳端位置),且其核酸序列與本實驗室所分離純化之免肌PFK基因3'端序列(插入序列
除外)完全相同。另外,由此段 cDNA推導出來的胺酸序列與Bacillus PFK 及E. coli PFK-1相對應之胺酸序列亦有很高
的相似性。本研究的結果,對於一利用特定位突變法(site-directed mutagenesis)研究PFK異位調節?之結構與功能關
係提供了一個有效而且成功的里程碑。
r - 英文摘要: A partial cDNA for rabbit muscle phosphofructokinase (Rm-PFK) has been cloned and sequenced.The nucleotide sequence of the cDNA agrees with the previously determined Rm-PFK genomic sequence.In addition, the amino acid sequence deduced from the cDNA is nearly identical to the Rm-PFK sequencepreviously determined by peptide analysis. A significant degree of homology exists when the amino acidsequence of Rm-PFK is compared with the sequences of Bacillus stearothermophilus PFK or Escherichiacoli PFK-1. The cloning and sequencing of the PFK cDNA fragment represents significant progress towardthe long term goal of using site-specific mutagenesis to investigate the structure-function relationships inthis allosteric enzyme.
- 中文關鍵字: recombinant DNA; Southern analysis; Okayama-Berg cDNA library; allosteric enzyme; muscle phosphofructokinase gene
- 英文關鍵字: --