A novel protein family mediates Casparian strip formation in the endodermis

Nature ◽  
2011 ◽  
Vol 473 (7347) ◽  
pp. 380-383 ◽  
Author(s):  
Daniele Roppolo ◽  
Bert De Rybel ◽  
Valérie Dénervaud Tendon ◽  
Alexandre Pfister ◽  
Julien Alassimone ◽  
...  
Keyword(s):  
Protein Family ◽  
Casparian Strip ◽  
Strip Formation ◽  
Novel Protein

Phylogenetic Analysis Reveals a Novel Protein Family Closely Related to Adenosine Deaminase

2005 ◽  
Vol 61 (6) ◽  
pp. 776-794 ◽  
Author(s):  
Stephanie A. Maier ◽  
Julia R. Galellis ◽  
Heather E. McDermid
Keyword(s):  
Phylogenetic Analysis ◽  
Adenosine Deaminase ◽  
Protein Family ◽  
Novel Protein

scholarly journals Peroxiredoxins, a novel protein family in lung cancer

2004 ◽  
Vol 111 (4) ◽  
pp. 514-521 ◽  
Author(s):  
Siri T. Lehtonen ◽  
Anne-Mari Svensk ◽  
Ylermi Soini ◽  
Paavo Pääkkö ◽  
Pasi Hirvikoski ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Protein Family ◽  
Novel Protein

scholarly journals The MYB36 transcription factor orchestrates Casparian strip formation

2015 ◽  
Vol 112 (33) ◽  
pp. 10533-10538 ◽  
Author(s):  
Takehiro Kamiya ◽  
Monica Borghi ◽  
Peng Wang ◽  
John M. C. Danku ◽  
Lothar Kalmbach ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Ectopic Expression ◽  
Casparian Strip ◽  
Strip Domain ◽  
Genes Encoding ◽  
Casparian Strips ◽  
Endodermal Cells ◽  
Respiratory Burst Oxidase ◽  
Strip Formation

The endodermis in roots acts as a selectivity filter for nutrient and water transport essential for growth and development. This selectivity is enabled by the formation of lignin-based Casparian strips. Casparian strip formation is initiated by the localization of the Casparian strip domain proteins (CASPs) in the plasma membrane, at the site where the Casparian strip will form. Localized CASPs recruit Peroxidase 64 (PER64), a Respiratory Burst Oxidase Homolog F, and Enhanced Suberin 1 (ESB1), a dirigent-like protein, to assemble the lignin polymerization machinery. However, the factors that control both expression of the genes encoding this biosynthetic machinery and its localization to the Casparian strip formation site remain unknown. Here, we identify the transcription factor, MYB36, essential for Casparian strip formation. MYB36 directly and positively regulates the expression of the Casparian strip genes CASP1, PER64, and ESB1. Casparian strips are absent in plants lacking a functional MYB36 and are replaced by ectopic lignin-like material in the corners of endodermal cells. The barrier function of Casparian strips in these plants is also disrupted. Significantly, ectopic expression of MYB36 in the cortex is sufficient to reprogram these cells to start expressing CASP1–GFP, correctly localize the CASP1–GFP protein to form a Casparian strip domain, and deposit a Casparian strip-like structure in the cell wall at this location. These results demonstrate that MYB36 is controlling expression of the machinery required to locally polymerize lignin in a fine band in the cell wall for the formation of the Casparian strip.

scholarly journals A novel protein family controls trafficking and metabolism of glycosphingolipids (606.9)

2014 ◽  
Vol 28 (S1) ◽  
Author(s):  
Marko Jovic ◽  
Yeun Ju Kim ◽  
Balazs Toth ◽  
Galina Tuymetova ◽  
Arnold Tsiomenko ◽  
...  
Keyword(s):  
Protein Family ◽  
Novel Protein
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