The Leucocyte L1 Protein: Identity with the Cystic Fibrosis Antigen and the Calcium‐Binding MRP‐8 and MRP‐14 Macrophage Components

The partial amino acid sequence of L1 protein light and heavy chains reveals an overall structure identical to the two macrophage proteins, MRP-8 and MRP-14, deduced from the sequence of the cDNA encoding the polypeptides. The light chain of L1 protein (L1-L) was shown to contain two modified amino acid residues.