ABI5 Antibodies

Target Information

ABI5 is a protein-coding gene in Arabidopsis thaliana whose product localizes predominantly to the nucleus and functions as a basic leucine zipper (bZIP) transcription factor in abscisic acid (ABA) signaling during seed maturation, germination, and early post-germinative growth. The locus produces multiple transcripts, and the canonical protein contains a C-terminal plant bZIP DNA-binding and dimerization module (basic region plus leucine zipper) that is required for sequence-specific binding to ABA-responsive promoter elements and for transcription factor dimer formation. Genetic and molecular studies show that loss-of-function abi5 alleles reduce sensitivity to ABA-mediated inhibition of germination and perturb expression of subsets of ABA-regulated genes, including late embryogenesis-abundant (LEA) stress-adaptation genes, consistent with ABI5 acting downstream of the core ABA pathway and integrating developmental and environmental cues to enforce a post-germination growth arrest/checkpoint under unfavorable conditions.

Synonyms

ABA INSENSITIVE 5; AtABI5; F2H17.12; F2H17_12; GIA1; GROWTH-INSENSITIVITY TO ABA 1