Abstract:
:The locus for human immunoglobulin heavy chain constant region genes (IgCH) is characterized by a significant frequency of deleted or duplicated haplotypes, due to unequal crossing-over events. Four types of deletions and one duplication have been reported so far. We describe here a molecular study of four cases of IgCH deletions. Two of the three types of deletions are reported here for the first time. Analysis of genetic markers associated with the deleted haplotypes pointed to the independent origin of similar deletions and the involvement of intergenic sequences in the mispairing-recombination process. The reduced or absent transcription of the C gamma 4 gene in two C gamma 2-deleted haplotypes offers an insight into the requirements for the isotype switch mechanism.
journal_name
Immunogeneticsjournal_title
Immunogeneticsauthors
Bottaro A,De Marchi M,De Lange G,Boccazzi C,Caldesi F,Gallina R,Carbonara AOdoi
10.1007/BF02341612subject
Has Abstractpub_date
1989-01-01 00:00:00pages
44-8issue
1eissn
0093-7711issn
1432-1211journal_volume
29pub_type
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