Identification of a maize nucleic acid-binding protein (NBP) belonging to a family of nuclear-encoded chloroplast proteins.
A cDNA encoding a nuclear-encoded chloroplast nucleic acid-binding protein (NBP) has been isolated from maize. Identified as an in vitro DNA-binding activity, NBP belongs to a family of nuclear-encoded chloroplast proteins which share a common domain structure and are thought to be involved in posttranscriptional regulation of chloroplast gene expression. NBP contains an N-terminal chloroplast transit peptide, a highly acidic domain and a pair of ribonucleoprotein consensus sequence domains. NBP is expressed in a light-dependent, organ-specific manner which is consistent with its involvement in chloroplast biogenesis. The relationship of NBP to the other members of this protein family and their possible regulatory functions are discussed.
Cook
W B
WB
University of Missouri, Division of Biological Sciences, Columbia 65211.
Walker
J C
JC
D000595:Amino Acid Sequence; D015152:Blotting, Northern; D015139:Blotting, Southern; D002736:Chloroplasts / Q000378:metabolism*; D004268:DNA-Binding Proteins / Q000737:chemistry / Q000235:genetics*; D005786:Gene Expression Regulation / Q000235:genetics*; D008969:Molecular Sequence Data; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics*; D012150:Polymorphism, Restriction Fragment Length; D003313:Zea mays / Q000235:genetics*
D004268:DNA-Binding Proteins; D010940:Plant Proteins; C072995:NBP protein, Zea mays