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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Cloning and promoter mapping of mouse kappa opioid receptor gene.

We have isolated mouse kappa 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.[1]


  1. Cloning and promoter mapping of mouse kappa opioid receptor gene. Liu, H.C., Lu, S., Augustin, L.B., Felsheim, R.F., Chen, H.C., Loh, H.H., Wei, L.N. Biochem. Biophys. Res. Commun. (1995) [Pubmed]
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