Characterization of DNA sequences that mediate nuclear protein binding to the regulatory region of the Pisum sativum (pea) chlorophyl a/b binding protein gene AB80: identification of a repeated heptamer motif

Gerardo Argüello, Enrique García‐Hernández, Mireya Sánchez, Patricio Gariglio, Luis Herrera‐Estrella, June Simpson

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Abstract

Two protein factors binding to the regulatory region of the pea chlorophyl a/b binding protein gene AB80 have been identified. One of these factors is found only in green tissue but not in etiolated or root tissue. The second factor (denominated ABF‐2) binds to a DNA sequence element that contains a direct heptamer repeat TCTCAAA. It was found that presence of both of the repeats is essential for binding. ABF‐2 is present in both green and etiolated tissue and in roots and factors analogous to ABF‐2 are present in several plant species. Computer analysis showed that the TCTCAAA motif is present in the regulatory region of several plant genes.

Original languageEnglish
Pages (from-to)301-309
Number of pages9
JournalThe Plant Journal
Volume2
Issue number3
DOIs
StatePublished - May 1992

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