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Author Gómez, Elisa ♦ Royo, Joaquín ♦ Guo, Yan ♦ Thompson, Richard ♦ Hueros, Gregorio
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher American Society of Plant Biologists
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Computer science, information & general works ♦ Library & information sciences ♦ Natural sciences & mathematics ♦ Chemistry & allied sciences ♦ Life sciences; biology ♦ Physiology & related subjects ♦ Biochemistry ♦ Genetics and evolution ♦ Natural history of organisms ♦ Technology ♦ Medicine & health ♦ Human anatomy, cytology, histology ♦ Human physiology ♦ Pharmacology and therapeutics
Subject Domain (in MeSH) Plant Structures ♦ Anatomy ♦ Eukaryota ♦ Organisms ♦ Amino Acids, Peptides, and Proteins ♦ Chemicals and Drugs ♦ Chemical Phenomena ♦ Genetic Phenomena ♦ Biological Sciences ♦ Information Science ♦ Information Science
Subject Keyword Discipline Botany ♦ Dna-binding Proteins ♦ Genetics ♦ Plant Proteins ♦ Proto-oncogene Proteins C-myb ♦ Seeds ♦ Zea Mays ♦ Amino Acid Sequence ♦ Base Sequence ♦ Metabolism ♦ Gene Expression Regulation, Plant ♦ Molecular Sequence Data ♦ Nuclear Proteins ♦ Plants, Genetically Modified ♦ Cytology ♦ Tobacco ♦ Transcription Factors ♦ Transcriptional Activation ♦ Journal Article ♦ Research Support, Non-u.s. Gov't
Abstract In maize, cells at the base of the endosperm are transformed into transfer cells that facilitate nutrient uptake by the developing seed. ZmMRP-1 is the first transfer cell-specific transcriptional activator to be identified. The protein it encodes contains nuclear localization signals and a MYB-related DNA binding domain. A single gene copy is present in maize, mapping to a locus on chromosome 8. ZmMRP-1 is first expressed soon after fertilization, when the endosperm is still a multinuclear coenocyte. The transcript accumulates in the basal nucleocytoplasmic domain that gives rise to transfer cells after cellularization. The transcript can be detected throughout transfer cell development, but it is not found in mature cells. ZmMRP-1 strongly transactivates the promoters of two unrelated transfer cell-specific genes. The properties of ZmMRP-1 are consistent with it being a determinant of transfer cell-specific expression. Possible roles for ZmMRP-1 in the regulation of endosperm and transfer cell differentiation are discussed.
Description Country affiliation: Spain
Author Affiliation: Gómez E ( Departamento Biología Celular y Genética, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain.)
ISSN 10404651
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2002-03-01
Publisher Place United States
e-ISSN 1531298X
Journal THE PLANT CELL ONLINE
Volume Number 14
Issue Number 3


Source: WHO-Global Index Medicus