Structure of the gene encoding nitrilase 1 from Arabidopsis thaliana

被引：9

作者：

Hillebrand, H ^{[1
]}

Tiemann, B ^{[1
]}

Hell, R ^{[1
]}

Bartling, D ^{[1
]}

Weiler, EW ^{[1
]}

机构：

[1] RUHR UNIV BOCHUM,LEHRSTUHL PFLANZENPHYSIOL,FAK BIOL,D-44780 BOCHUM,GERMANY

来源：

GENE | 1996年 / 170卷 / 02期

关键词：

gene structure; promoter; plant; auxin; indole-3-acetic acid;

D O I：

10.1016/0378-1119(95)00839-X

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

The nitrilases of Arabidopsis thaliana (At) catalyze the conversion of indole-3-acetonitrile (IAN) to indole-3-acetic acid (IAA), thus controlling the last step of auxin biosynthesis. A full-length genomic clone encoding the complete cluster of the At nitrilases 1 to 3 (NIT1-3), including the respective promoter regions, has been isolated and the NIT1 isoform has been sequenced. The coding region (nit1) spans about 2.3 kb and is composed of five exons separated by four introns. The exon-intron splice junctions agree with the consensus sequences typical for plant genes. In agreement with the known cDNA sequence, the exons encode a protein of 346 amino acids (aa) with a deduced molecular mass of 38.2 kDa. The transcription start point (tsp) of nit1 was determined by primer extension experiments. This tsp defines a 5' untranslated region of 36 bp and is located 32 bp downstream from a TATA box. The promoter region of nit1 is located within the approx. 1.5-kb intergenic part that separates the nit2 and nit1 coding sections.

引用

页码：197 / 200

页数：4

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