Gene structure in the tryptophan operon of Escherichia coli. Nucleotide sequence of trpC and the flanking intercistronic regions.

Gene structure in the tryptophan operon of Escherichia coli. Nucleotide sequence of trpC and the flanking intercistronic regions.
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大肠杆菌色氨酸操纵子的基因结构。

DOI:
10.1016/0022-2836(80)90261-2
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发表时间:
1980
影响因子:
5.6
通讯作者:
Platt,T
Platt,T
中科院分区:
生物学2区
文献类型:
--
作者:
Christie,GE;Platt,T

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我们测定了大肠杆菌trp操纵子跨trpC部分的DNA序列,该部分编码双功能酶N-(5′-磷酸核糖基)-邻氨基苯甲酸异构酶/吲哚-3-甘油磷酸合成酶。编码区由1356个核苷酸组成,指导长度为452个氨基酸的多肽的合成。预测的蛋白质序列与纯酶的氨基酸组成一致,并且与来自该分子的所有已知的部分肽序列一致。该酶具有特殊的功能性,因为它在一条多肽链中含有色氨酸生物合成中两个连续反应的催化活性,还确定了entrpC及其侧翼基因trpD和trpB之间连接的核苷酸序列。trpD-trpC连接由6个未翻译的核苷酸组成,trpC的翻译起始于两个相邻AUG密码子的第二个。trpC终止密码子与trpB相隔11个核苷酸。trpC侧翼的短非翻译区将其与trpA和trpD区分开来,trpA和trpD的起始密码子分别与前面基因的终止密码子(trpBandtrpE)重叠。顺反子间区域的这些差异可能反映了操纵子中相邻基因产物之间的功能关系。
We have determined the DNA sequence for the portion of theEscherichia colitryptophan (trp) operon spanningtrpC, which codes for the bifunctional enzymeN-(5′-phosphoribosyl)-anthranilic acid isomerase/indole-3-glycerol phosphate synthetase. The coding region consists of 1356 nucleotides, directing the synthesis of a polypeptide 452 amino acids in length. The predicted protein sequence is consistent with the amino acid composition of the pure enzyme, and with all known partial peptide sequences derived from this molecule. The enzyme is of particular functional interest, because it contains the catalytic activities for two sequential reactions in tryptophan biosynthesis in a single polypeptide chain.The nucleotide sequences of the junctions betweentrpCand its flanking genes,trpDandtrpB, have also been determined. ThetrpD-trpCjunction consists of six untranslated nucleotides and translation oftrpCinitiates at the second of two adjacent AUG codons. ThetrpCtermination codon is separated fromtrpBby 11 nucleotides. The short non-translated regions flankingtrpCdistinguish it fromtrpAandtrpD, whose initiation codons overlap the termination codons of the preceding genes (trpBandtrpE), respectively. These differences in the intercistronic regions may reflect functional relationships between the products of adjacent genes in the operon.
大肠杆菌色氨酸操纵子操纵子组成型突变体的序列分析。
DOI: --
发表时间: 1978
影响因子: 5.6
作者:
George N. Bennett;Charles Yanofsky
通讯作者: Charles Yanofsky
trp 阻遏物和 RNA 聚合酶与 trp 操纵子的相互作用。
DOI: 10.1016/0022-2836(75)90093-5
发表时间: 1975
影响因子: 5.6
作者:
C. Squires;F. Lee;C. Yanofsky
通讯作者: C. Yanofsky
DOI: 10.1126/science.1094538
发表时间: 1975-01-01
期刊: SCIENCE
影响因子: 56.9
作者:
BERTRAND, K;KORN, L;YANOFSKY, C
通讯作者: YANOFSKY, C
指定吲哚甘油磷酸合成酶的 trpC 顺反子的结构及其在大肠杆菌色氨酸操纵子中的定位。
DOI: --
发表时间: 1967
期刊: Genetics
影响因子: 3.3
作者:
O. Smith
通讯作者: O. Smith
DOI: --
发表时间: 1967
期刊:
影响因子: --
作者:
S. Deeb;K. Okamoto;B. Hall
通讯作者: B. Hall