Component of the COPII coat, that covers ER-derived vesicles involved in transport from the endoplasmic reticulum to the Golgi apparatus. COPII acts in the cytoplasm to promote the transport of secretory, plasma membrane, and vacuolar proteins from the endoplasmic reticulum to the Golgi complex. COPII is composed of at least five proteins: the Sec23/24 complex, the Sec13/31 complex and Sar1. SEC24A is capable of forming heterodimers with SEC24B and SEC24C. Interacts with TMED2. Expressed in fibroblasts, hepatocytes, and lymphocytes. Belongs to the SEC23/SEC24 family. SEC24 subfamily. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Chromosomal Location of Human Ortholog: 5q31.1
Cellular Component: Golgi membrane; endoplasmic reticulum membrane; COPII vesicle coat; perinuclear region of cytoplasm; cytosol
Molecular Function: zinc ion binding
Biological Process: COPII coating of Golgi vesicle; intracellular protein transport; antigen processing and presentation of peptide antigen via MHC class I; ER to Golgi vesicle-mediated transport; cellular protein metabolic process; antigen processing and presentation of exogenous peptide antigen via MHC class II; protein amino acid N-linked glycosylation via asparagine; post-translational protein modification
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.