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Human HLA‐DRα gene: a rare oligonucleotide (GTATA) identifies an upstream sequence required for nuclear protein binding
Author(s) -
Barbieri Rafaella,
Giacomini Patrizio,
Volinia Stefano,
Nastruzzi Claudio,
Mileo Anna Maria,
Ferrini Umberto,
Soria Marco,
Barrai Italo,
Natali Pier Giorgio,
Gambari Roberto
Publication year - 1990
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(90)80970-t
Subject(s) - gene , oligonucleotide , biology , genetics , promoter , dna , homology (biology) , regulatory sequence , computational biology , consensus sequence , dna sequencing , sequence (biology) , microbiology and biotechnology , peptide sequence , regulation of gene expression , gene expression
Synthetic oligonucleotides containing putative regulatory sequences are currently employed to identify and isolate genes coding for nuclear binding factors. Upstream DNA sequences of eukaryotic genes required for transcriptional activity and tissue specificity can be identified by means of biochemical techniques as well as computer analysis using homology searching. An alternative approach has been recently proposed by our research group. Scanning DNA sequences 1.8 megabases in length from a Genetic Sequence Data Bank, we have identified rare oligonucleotides 5 base pairs (bp) long, which are localized within or close to regulatory segments in mammalian promoters. In this paper we demonstrate that the rare GTATA sequence identifies an upstream region of the HLA‐DRα gene which operates in conjunction with the sequence AGAAGTCAG, homologous to a box found in many interferon‐inducible genes, in binding nuclear proteins.