Structural characterization of the early indoleacetic acid-inducible genes, PS-IAA4/5 and PS-IAA6, of pea (Pisum sativum L.).
Two early auxin-inducible genes (PS-IAA4/5 and PSIAA6) from pea were cloned using previously isolated complementary DNA sequences. They are present in single copy per haploid genome, and are members of a large divergent multigene family that encodes similar proteins. The genes were structurally characterized and sequence analysis of their 5'-flanking regions revealed the presence of several highly conserved sequences found in various auxin-regulated genes from other plant species. Their coding regions are interrupted by three and two introns, respectively. Introns two and three of PS-IAA4/5 and introns one and two of PS-IAA6 are located in identical positions. These genes encode proteins of 189 (21,036 Da) and 179 (20,330 Da) residues that are 46% identical. They also share a significant degree of identity (42 to 80%) with other proteins encoded by auxin regulated genes in soybean, mungbean and Arabidopsis thaliana. All proteins contain four conserved domains ranging in size from 9 to 43 amino acids. Their most prominent feature is the presence of a highly charged N terminus consisting of two clusters of acidic residues separated by a cluster of basic amino acids.
Oeller
P W
PW
Plant Gene Expression Center, Albany, CA 94710.
Keller
J A
JA
Parks
J E
JE
Silbert
J E
JE
Theologis
A
A
D000595:Amino Acid Sequence; D001483:Base Sequence; D015139:Blotting, Southern; D003001:Cloning, Molecular; D004247:DNA; D007887:Fabaceae / Q000235:genetics*; D005786:Gene Expression Regulation; D017343:Genes, Plant; D007210:Indoleacetic Acids / Q000494:pharmacology*; D007438:Introns; D008969:Molecular Sequence Data; D010940:Plant Proteins / Q000235:genetics*; D010946:Plants, Medicinal; D015183:Restriction Mapping; D017386:Sequence Homology, Amino Acid
D007210:Indoleacetic Acids; D010940:Plant Proteins; D004247:DNA