Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2014 Apr;93(1):35-41.
doi: 10.1007/s12041-014-0330-y.

The γ-Gliadin-Like γ-Prolamin Genes in the Tribe Triticeae

Free article

The γ-Gliadin-Like γ-Prolamin Genes in the Tribe Triticeae

Peng-Fei Qi et al. J Genet. .
Free article


The γ-prolamins are important components of seed storage proteins in wheat and other Triticeae species. Here, the γ-prolamin genes from the diploid Triticeae species were systemically characterized. Most of the γ-prolamins (except 75 K γ-secalins) characterized were defined as γ-gliadin-like γ-prolamins, since they shared same characteristic model structure with γ-gliadins. Over one-third of these putatively functional γ-prolamin peptides contained different number of cysteine residues as compared to the eight residues present in γ-gliadins. Sequence polymorphism and linkage disequilibrium analyses showed the conservation of γ-prolamin genes in Triticeae species under evolutionary selection. Phylogenetic analyses indicated that these γ-prolamin genes can not be clearly separated according to their genomic origins, reflecting the conservation of γ-gliadinlike γ-prolamin genes after the divergence of Triticeae species. A screening of coeliac disease (CD) toxic epitopes shows that the γ-prolamins from some other genomes contain much fewer epitopes than those from the A, S (B) and D genomes of wheat. These findings contribute to better understanding of γ-prolamin family in Triticeae and build a ground for breeding less CD-toxic wheat cultivars.

Similar articles

See all similar articles

Cited by 1 article


    1. Genetics. 1989 Nov;123(3):585-95 - PubMed
    1. Genetics. 1993 Mar;133(3):693-709 - PubMed
    1. J Proteome Res. 2005 Sep-Oct;4(5):1732-41 - PubMed
    1. J Genet. 2013 Apr;92(1):151-4 - PubMed
    1. Mol Biol Evol. 2011 Oct;28(10):2731-9 - PubMed

Publication types

LinkOut - more resources