Abstract:
:Human cDNA probes for 21-hydroxylase (21-OH) and for complement component C4 are used on restriction digests of the members of several families with interesting supratypes. The presence of two Taq I fragments of 3.7 kb and 3.2 kb in size with a 21-OH probe is confirmed in most individuals who show no evidence of C4 deletions or 21-OH deficiency. Most individuals also show a doublet of weakly hybridizing bands at approximately 2.5 kb, the smaller of which is part of the 21 A gene. The arrangement of the 21-OH genes on disease-associated supratypes was examined, and it is shown that copies of the same supratype from unrelated individuals are usually identical. Evidence is provided for deletions of 21A on the B8, C4AQ0, C4B1, BfS, DR3 and B18, C4A3, C4BQ0, BfF1, DR3 supratypes and a duplication of 21A on the B14, C4A2, C4B1/B2, BfS supratype. Gene rearrangements may be relevant to diseases such as juvenile onset diabetes mellitus.
journal_name
Immunogeneticsjournal_title
Immunogeneticsauthors
Garlepp MJ,Wilton AN,Dawkins RL,White PCdoi
10.1007/BF00377968subject
Has Abstractpub_date
1986-01-01 00:00:00pages
100-5issue
2eissn
0093-7711issn
1432-1211journal_volume
23pub_type
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