InterPro domain: IPR043452

This entry also includes ABI5 from Arabidopsis. ABI5 is a transcription factor that participates in ABA-regulated gene expression during seed development and subsequent vegetative stage by acting as the major mediator of ABA repression of growth [ 1 , 2 ]. It is also involved in the sugar signalling response in plants [ 3 ].

This family is composed of a group of plant bZIP transcription factors with similarity to OsbZIP46, which regulates abscisic acid (ABA) signalling-mediated drought tolerance in rice [ 4 , 5 ]. Plant bZIPs are involved in developmental and physiological processes in response to stimuli/stresses such as light, hormones, and temperature changes. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes [ 6 ].

1. bZIP transcription factors in Arabidopsis. Proc. Natl. Acad. Sci. U.S.A. 7, 106-11
2. A postgermination developmental arrest checkpoint is mediated by abscisic acid and requires the ABI5 transcription factor in Arabidopsis. Plant Physiol. 98, 4782-7
3. Three genes that affect sugar sensing (abscisic acid insensitive 4, abscisic acid insensitive 5, and constitutive triple response 1) are differentially regulated by glucose in Arabidopsis. Curr. Opin. Plant Biol. 133, 231-42
4. The rice OsDIL gene plays a role in drought tolerance at vegetative and reproductive stages. Plant Cell 82, 239-53
5. MODD Mediates Deactivation and Degradation of OsbZIP46 to Negatively Regulate ABA Signaling and Drought Resistance in Rice. null 28, 2161-2177
6. Transcription factors 1: bZIP proteins. Trends Plant Sci. 2, 101-68