Use of carboxypeptidase A for simultaneous assessment of purity and assignment of human Bence Jones proteins and light chains to K and L classes

A simple and rapid method involving the use of carboxypeptidase A was developed to assess the purity of human Bence Jones proteins and light chains and simultaneously to assign them to their principal antigenic class (K- or L-type). Only serine was released from purified L-type proteins by the actio...

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Published inArchives of biochemistry and biophysics Vol. 132; no. 2; pp. 502 - 508
Main Authors Edmundson, Allen B., Simonds, Nanne B., Sheber, Florence A., Johnson, Timothy, Bangs, Betty
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.07.1969
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Abstract A simple and rapid method involving the use of carboxypeptidase A was developed to assess the purity of human Bence Jones proteins and light chains and simultaneously to assign them to their principal antigenic class (K- or L-type). Only serine was released from purified L-type proteins by the action of the enzyme, while no amino acids were liberated from K-type proteins. The heavy chain of a human myeloma IgG protein was also not susceptible to hydrolysis, but serine was released from the L-type light chain of the intact myeloma protein.
AbstractList A simple and rapid method involving the use of carboxypeptidase A was developed to assess the purity of human Bence Jones proteins and light chains and simultaneously to assign them to their principal antigenic class (K- or L-type). Only serine was released from purified L-type proteins by the action of the enzyme, while no amino acids were liberated from K-type proteins. The heavy chain of a human myeloma IgG protein was also not susceptible to hydrolysis, but serine was released from the L-type light chain of the intact myeloma protein.
Author Sheber, Florence A.
Simonds, Nanne B.
Edmundson, Allen B.
Johnson, Timothy
Bangs, Betty
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CitedBy_id crossref_primary_10_1126_science_177_4046_360
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10.1016/S0065-3233(08)60022-4
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10.1126/science.149.3688.1090
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Snippet A simple and rapid method involving the use of carboxypeptidase A was developed to assess the purity of human Bence Jones proteins and light chains and...
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SubjectTerms Amino Acids - analysis
Antigens - classification
Bence Jones Protein - classification
Carboxypeptidases
Chromatography, Gel
Humans
Immunoglobulin G - classification
Multiple Myeloma - immunology
Serine
Title Use of carboxypeptidase A for simultaneous assessment of purity and assignment of human Bence Jones proteins and light chains to K and L classes
URI https://dx.doi.org/10.1016/0003-9861(69)90394-4
https://www.ncbi.nlm.nih.gov/pubmed/5797336
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