Cloning and promoter mapping of mouse κ opioid receptor gene

Hsien Ching Liu, Shengli L. Lu, Lance B. Augustin, Roderick F. Felsheim, Hung Chun Chen, Horace H. Loh, Li Na Wei

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


We have isolated mouse κ opioid receptor (KOR) genomic clones containing the complete 5′-untranslated region, a portion of the 3′-untranslated region, and its coding region. The mouse KOR gene spans at least 16 kb and contains at least 4 exons. Exon I encodes the major portion of 5′-untranslated sequence and transcription initiation is determined, by primer extension experiments, to reside at 3 major sites, located at 334, 340, and 716 nucleotides upstream from the translation initiation codon. No typical TATA or CAAT boxes can be identified within an approximately 1-kb upstream region. Exon II contains 271 nucleotides, including 14 nucleotides of 5′-untranslated sequence. Exon III contains 353 nucleotides and exon IV begins at amino acid position #204 and encodes the rest of the 3′-end sequence of the cloned cDNA. Based upon Northern blot analysis, KOR transcript is estimated to be approximately 6 kb in length.

Original languageEnglish (US)
Pages (from-to)639-647
Number of pages9
JournalBiochemical and Biophysical Research Communications
Issue number2
StatePublished - Apr 17 1995


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