PLANT PHYSIOLOGY , Vol 115, Issue 2 841-846, Copyright © 1997 by American Society of Plant Biologists
A Water-Soluble Chlorophyll Protein in Cauliflower May Be Identical to BnD22, a Drought-Induced, 22-Kilodalton Protein in Rapeseed
N. Nishio and H. Satoh
Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274, Japan
A water-soluble chlorophyll protein (WSCP) in cauliflower (Brassica
oleracea L.) was purified and its N-terminal sequence was determined.
Forty-six of 48 residues of the sequence completely matched those of the
drought-induced 22-kD protein (BnD22) in rapeseed (Brassica napus L.). All
40 sequenced residues of WSCP from rapeseed were perfectly matched to those
of BnD22. Thus, WSCP may be identical to BnD22. The abundance of WSCP was
increased in detached cauliflower leaves.