Sec24 is a protein that plays a crucial role in the transport of proteins within cells. It is part of the COPII complex, which is responsible for packaging proteins into vesicles that move from the endoplasmic reticulum to the Golgi apparatus. This process is essential for the proper functioning of cells, as it ensures that proteins reach their intended destinations. In addition to its role in protein transport, Sec24 also helps in selecting specific cargo proteins for inclusion in the transport vesicles. This selection process is vital for maintaining cellular organization and function, as it ensures that only the correct proteins are delivered to their target sites within the cell.