A Phylogenetic Analysis of PLATZ Transcription Factors in Plants
Başlık:
A Phylogenetic Analysis of PLATZ Transcription Factors in Plants
Yazar:
Holmes, Jennifer, author.
ISBN:
9780438096769
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (80 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: John Gray.
Özet:
The PLATZ (plant AT-rich sequence-and zinc-binding protein) family of proteins were initially defined through the study of the PLATZ1 protein from pea. This family of proteins were described as a novel class proteins that exhibit two conserved zinc finger domains C-x2-H-x11-C-x 2-C-x(4--5)-C-x2-C-x(3--7)-H-x 2-H and C-x2-C-x(10--11)-C-x3-C. Despite their initial implication as DNA binding proteins no other family member has been proven to exhibit this activity and few PLATZ genes have since been studied. Here we report a survey of the PLATZ domain containing genes in the complete genomes of a selection of algae, basal plants, and higher monocot and dicot plants. We find evidence for the expansion of the repertoire of PLATZ genes due to gene and genome duplication events and for altered gene structures. We identify the likely orthologous genes in higher plants through synteny analysis. A multiple sequence alignment (MSA) analysis of these proteins allowed us to generate an updated profile of the amino acids that are conserved within two conserved zinc finger domains. The first zinc finger domain appears to have evolved from the B-box zinc finger domain that is found in a wide range of eukaryotes. The second zinc finger domain (PLATZ domain) may constitute two domains---a protein-protein interaction domain and a C2C2 type zinc finger domain. This region of the protein was not found in eukaryotes outside of algae and plants. The precise function of PLATZ proteins in plants remains poorly defined and there are indications that they function in response to stress (So et al, POJ 8(6):479-484 (2015). We report the tissue specific expression profiles of PLATZ family members in cereal grasses through an analysis of public RNA-seq datasets. Lastly we report our attempts to place PLATZ proteins within predicted gene regulatory networks through co-expression analysis.
Notlar:
School code: 0232
Tüzel Kişi Ek Girişi:
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(696366.1) | 696366-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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