Amino Acid Sequences in Amyloid Proteins of χIII Immunoglobulin Light‐Chain Origin
- 1 December 1983
- journal article
- case report
- Published by Wiley in Scandinavian Journal of Immunology
- Vol. 18 (6), 557-560
- https://doi.org/10.1111/j.1365-3083.1983.tb00891.x
Abstract
The main amyloid fibril (AL) proteins extracted from the spleen of Patient So 124 with systemic amyloidosis and from a skin nodule of Patient KSA with localized amyloidosis were studied by partial amino acid sequence analysis and proved to be of kappa III immunoglobulin light-chain origin. The sequences were similar to that of Bence Jones protein V and, which has been reported to have a unique kappa III subset sequence. Thus, except for position 9 in protein AL(KSA), the amino acid sequences were identical to position 25 in AL(So 124) and in AL(KSA). The question is being raised whether this kappa III subset might contain amyloidogenic sequences.Keywords
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