Document 0047 DOCN M9590047 TI Cleavage of the HIV replication primer tRNALys,3 in human cells expressing bacterial anticodon nuclease. DT 9509 AU Shterman N; Elroy-Stein O; Morad I; Amitsur M; Kaufmann G; Department of Biochemistry, Tel Aviv University, Israel. SO Nucleic Acids Res. 1995 May 25;23(10):1744-9. Unique Identifier : AIDSLINE MED/95303607 AB Anticodon nuclease is a bacterial restriction enzyme directed against tRNA(Lys). We report that anticodon nuclease also cleaves mammalian tRNA(Lys) molecules, with preference and site specificity shown towards the natural substrate. Expression of the anticodon nuclease core polypeptide PrrC in HeLa cells from a recombinant vaccinia virus elicited cleavage of intracellular tRNA(Lys),3. The data justify an inquiry into the possible application of anticodon nuclease as an inhibitor of tRNA(Lys),3-primed HIV replication. They also indicate that the anticodon region of tRNA(Lys) is a substrate recognition site and suggest that PrrC harbors the enzymatic activity. DE Animal Bacterial Proteins/BIOSYNTHESIS/*METABOLISM Base Sequence Comparative Study Escherichia coli/*METABOLISM Hela Cells Human HIV/*GENETICS/*PHYSIOLOGY Mammals Molecular Sequence Data Nucleic Acid Conformation Recombinant Proteins/BIOSYNTHESIS/METABOLISM Ribonucleases/BIOSYNTHESIS/*METABOLISM RNA, Transfer, Lys/CHEMISTRY/*METABOLISM Sequence Homology, Nucleic Acid Substrate Specificity Support, Non-U.S. Gov't Transfection JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).