HDG11 Rabbit Polyclonal Antibody (ER1901-56)

UNIPROT #

Q9FX31

PROTEIN NAME

HDG11

SYNONYMS

Homeobox-leucine zipper protein HDG11;HD-ZIP protein HDG11;Homeodomain GLABRA 2-like protein 11;Homeodomain transcription factor HDG11;Protein ENHANCED DROUGHT TOLERANCE 1;Protein HOMEODOMAIN GLABROUS 11;HDG11;EDT1;HDGL2-11;At1g73360;T9L24.43

SEQUENCE SIMILARITIES

Belongs to the HD-ZIP homeobox family. Class IV subfamily.

TISSUE SPECIFICITY

Expressed in apical meristems and young epidermal tissue including trichomes and stipules. Expressed in lateral root tips, the L1 layer of apical inflorescence meristems and early flower primordia, carpel and petal epidermis, stigma papillae, ovule primordia, nucellus and embryo.

DEVELOPMENTAL STAGE

During embryo development, expressed in all cells at the 4- and 16-cell embryo stages. Expression is restricted to the protoderm from the globular stage onward.

SUBCELLULAR LOCATION

Nucleus.

FUNCTION

Transcription factor which acts as positive regulator of drought stress tolerance. Can transactivate CIPK3, NCED3 and ERECTA. Transactivates several cell-wall-loosening protein genes by directly binding to HD motifs in their promoters. These target genes play important roles in coordinating cell-wall extensibility with root development and growth. Transactivates CYP74A/AOS, AOC3, OPR3 and 4CLL5/OPCL1 genes by directly binding to HD motifs in their promoters. These target genes are involved in jasmonate (JA) biosynthesis, and JA signaling affects root architecture by activating auxin signaling, which promotes lateral root formation. Acts as negative regulator of trichome branching. Required for the establishment of giant cell identity on the abaxial side of sepals. May regulate cell differentiation and proliferation during root and shoot meristem development.