alexa Molecular Cloning and Functional Expression of A Class
ISSN: 2320-0189

Research & Reviews: Journal of Botanical Sciences
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Short Communication

Molecular Cloning and Functional Expression of A Class IIA Water- Soluble Chlorophyll-Binding Protein From Brassica nigra

Mayuko Ono1, Shigekazu Takahashi2, Risa Shibata1, Mizuki Tomizawa1, Katsumi Nakayama1 and Hiroyuki Satoh1*

1Department of Biomolecular Science, Toho University, Funabashi, Chiba 274-8510, Japan

2Faculty of Life Sciences, Toyo University, Itakura, Gunma 374-0193, Japan

Corresponding Author:
Hiroyuki Satoh
Faculty of Science, Department of Biomolecular Science, Toho University 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
Tel:
+81 47 472 7532
E-mail: [email protected]

Received date: 27/04/2016; Accepted date: 25/05/2016; Published date: 27/05/2016

 

Abstract

Non-photoconvertible water-soluble chlorophyll-binding proteins, called Class II WSCPs, have been identified in some Brassicaceae plants. Although the WSCP in black mustard (Brassica nigra) was the second Class II WSCP to be reported by Murata and Murata, the cDNA has not been cloned until now. In this study, we cloned a cDNA encoding the black mustard WSCP (BmWSCP) and analyzed its chlorophyll binding affinity using its recombinantly expressed protein. Sequence analyses revealed that the mature region the BmWSCP cDNA was predicted to be 534 bp encoding a protein of 178 amino acid residues. Recombinant BmWSCP was expressed in Escherichia coli as a hexa-histidine fusion protein and could bind successfully to chlorophylls, with its highest affinity to Chl a, confirming that the cDNA encodes a Class IIA WSCP in black mustard.

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