Human erythrocyte membrane sialoglycoprotein β. The cDNA sequence suggests the absence of a cleaved N-terminal signal sequence

We have isolated cDNA clones corresponding to the human erythrocyte membrane sialoglycoprotein beta. The clones encompass the coding region for the protein, 120 residues of the 5' non-coding region and the 3' non-coding region. The cDNA sequence suggests that sialoglycoprotein beta is not translated with the cleaved N-terminal signal sequence usual in a membrane protein of this type. Sialoglycoprotein beta or a closely related homologue is present in human kidney as well as erythroid cells.