Abstract:
:We have constructed the detailed physical map of the HLA class II gene region by the pulsed field gel electrophoresis (PFGE) and cosmid walking technique. In this process, the DNA gene was found to be located telomeric to DPA1 with the 5'----3' orientation which is the same as the DPA1 and DPA2 genes, but opposite to the DQA1, DQA2 and DRA genes. This orientation is reverse to that of the counterpart gene in the rabbit major histocompatibility complex region. About 30 kb downstream from the DNA gene towards DOB, a CpG island characterized by clustered sites for rare cutting restriction enzymes and frequently associated with the 5' end of housekeeping genes was identified by PFGE and cosmid walking. From a complementary DNA (cDNA) library constructed from a Epstein-Barr virus-transformed B-cell line, a cDNA clone was isolated using the genetic probe from this CpG island. Its nucleotide sequences suggested that it represented a new non-HLA gene with a single copy which was of little genetic polymorphism and named NAT (DNA-associated transcript). Northern blot analysis showed that the NAT gene was expressed with a 4-kb transcript in all of tissues examined so far.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Okamoto N,Ando A,Kawai J,Yoshiwara T,Tsuji K,Inoko Hdoi
10.1016/0198-8859(91)90059-isubject
Has Abstractpub_date
1991-11-01 00:00:00pages
221-8issue
3eissn
0198-8859issn
1879-1166pii
0198-8859(91)90059-Ijournal_volume
32pub_type
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