UNIPROT #

P35638

PROTEIN NAME

DDIT3

SYNONYMS

C/EBP homologous protein antibody; C/EBP Homology Protein antibody; C/EBP zeta antibody; C/EBP-homologous protein 10 antibody; C/EBP-homologous protein antibody; CCAAT/enhancer binding protein homologous protein antibody; CEBPZ antibody; CHOP 10 antibody; CHOP antibody; CHOP-10 antibody; CHOP10 antibody; DDIT 3 antibody; DDIT-3 antibody; Ddit3 antibody; DDIT3_HUMAN antibody; DNA Damage Inducible Transcript 3 antibody; DNA damage-inducible transcript 3 protein antibody; GADD 153 antibody; GADD153 antibody; Growth Arrest and DNA Damage Inducible Protein 153 antibody; Growth arrest and DNA damage inducible protein GADD153 antibody; Growth arrest and DNA damage-inducible protein GADD153 antibody; MGC4154 antibody

SEQUENCE SIMILARITIES

Belongs to the bZIP family.

POST-TRANSLATIONAL MODIFICATION

Ubiquitinated, leading to its degradation by the proteasome.; Phosphorylation at serine residues by MAPK14 enhances its transcriptional activation activity while phosphorylation at serine residues by CK2 inhibits its transcriptional activation activity.

SUBCELLULAR LOCATION

Nucleus.

FUNCTION

DDIT3 also named GADD 153 which has been described as a growth arrest and DNA damage-inducible gene that encodes a C/EBP-related nuclear protein. This protein has also been designated C/EBP-homologous protein (CHOP-10). GADD 153 expression is induced by a variety of cellular stresses, inducing nutrient deprivation and metabolic perturbations. GADD 153 functions to block cells in G1 to S phase in cell cycle progression and acts by dimerizing with other C/EBP proteins to direct GADD 153 dimers away from "classical" C/EBP binding sites, recognizing instead unique "nonclassical" sites. Thus GADD 153 acts as a negative modulator of C/EBP-like proteins in certain terminally differentiated cells, similar to the regulatory function of Id on the activity of Myo D and Myo D-related proteins involved in the development of muscle cells.