The RCN3 protein is a possible molecular chaperone critical for protein biosynthesis and transport within the endoplasmic reticulum. Its involvement extends to the biosynthesis and transport of key proteins, including SP-A, SP-D, and ABCA3, highlighting the importance of pulmonary surfactant homeostasis. RCN3 Protein, Rat (HEK293, His) is the recombinant rat-derived RCN3 protein, expressed by HEK293 , with C-His labeled tag.