Sequencing and chromosomal localization of the RA138 gene encoding a rice allergenic protein

A cDNA clone (RA138) encoding a rice allergenic (RA) protein has been isolated during a large-scale random sequencing of a cDNA library prepared from developing seeds. The nucleotide sequence of the RA138 gene contained an open reading frame (ORF, 477 bp) encoding a 17 kDa protein. The amino acid se...

Full description

Saved in:
Bibliographic Details
Published in:Molecules and cells 1998-04, Vol.8 (2), p.175-180
Main Authors: Oh, S J, Lee, M C, Cho, Y G, Kim, J K, Nahm, B H
Format: Article
Language:English
Subjects:
Allergens - analysis
Allergens - genetics
Amino Acid Sequence
Antigens, Plant
Base Sequence
Blotting, Southern
Chromosome Mapping
DNA, Complementary - chemistry
DNA, Complementary - genetics
Genes, Plant - genetics
Molecular Sequence Data
Oryza - chemistry
Oryza - genetics
Phylogeny
Plant Proteins - analysis
Plant Proteins - genetics
Polymorphism, Restriction Fragment Length
Sequence Alignment
Sequence Analysis, DNA
Sequence Homology, Amino Acid
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A cDNA clone (RA138) encoding a rice allergenic (RA) protein has been isolated during a large-scale random sequencing of a cDNA library prepared from developing seeds. The nucleotide sequence of the RA138 gene contained an open reading frame (ORF, 477 bp) encoding a 17 kDa protein. The amino acid sequence deduced from the ORF was composed of 159 amino acid residues and was highly homologous to those from RA genes previously isolated, such as RA5 (92% identity), RA14 (73%), and RA17 (68%). The protein contained 10 cysteine residues that were conserved in the alpha-amylase/trypsin inhibitor family including RA proteins. Excluding a putative signal peptide consisting of 26 amino acid residues, the mature protein would be 14.4 kDa in size and have a pI of 7.0. DNA gel blot analysis under high stringency conditions indicated that multiple copies of the RA138 gene were present in the rice genome. The chromosomal location of the RA138 gene has been identified on chromosome 7 in a segregation analysis using a population of 164 recombinant inbred lines derived from a cross between Milyang 23 and Gihobyeo. The locus that may contain multiple copies of the RA138 was located between RFLP markers RG477A and C492 with genetic distances of 10.7 cM and 6.7 cM, respectively.
ISSN:1016-8478
DOI:10.1016/s1016-8478(23)13410-8