Nucleic Acids Research, 1992, Vol. 20, No. 2 359-364
© 1992
MOLECULAR BIOLOGY |
Identification of a maize nucleic acid-binding protein (NBP) belonging to a family of nuclear-encoded chloroplast proteins
University of Missouri, Division of Biological Sciences Columbia, MO 65211, USA
*To whom correspondence should be addressed at Midwestern State University, Biology Department, Wichita Falls, TX 76308, USA
Received August 8, 1991. Revised December 6, 1991. Accepted December 6, 1991.
A cDNA encoding a nuclear-encoded chloroplast nucleic acid-binding protein (NBP) has been isolated
from maize. Odentified as an in vitro DNA-binding activity, NBP belongs to a family of nuclear-encoded chloropllast proteins which share a common domain structure and are thought to be involved in post-transcriptional regulation of chloroplast gene expression. NBP contains an N-terminal chloroplast transit peptide, a highly acidic domain and a pair of ribonuclleoprotein consensus sequence domains. NBP is expressed on a light-dependent, organ-specific manner which is consistent with its involvement in chloropllast biogenesis. The relationship of NBP to the other members of this protein family and their possible regulatory functions are discussed.
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