The Primary Structure of μ-Chain-Disease Protein BOT. Peculiar Amino-Acid Sequence of the N-Terminal 42 Positions

Abstract
The complete primary structure of the .mu. H-chain disease (.mu.-HCD) protein BOT was determined [in humans]. The monomeric HCD-.mu.-chain consists of 391 amino-acid residues, lacking the VH [H chain, variable part] and .mu.CH1 [1st domain of IgM H chain, constant part] domains but including the entire CH2, CH3 and CH4 domains (349 residues). The sequence of the preceeding 42 N-terminal residues which is designated as the pre-C-part presents no homology to any known variable or constant Ig sequence, but contains an internal homology of positions 10-19 to positions 20-29. The origin of the pre-C-part structure and the deletion of the .mu.CH1 domain of protein BOT are discussed.

This publication has 21 references indexed in Scilit: