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Nucleic Acids Research, 1979, Vol. 7, No. 6 1635-1648
© 1979

Articles

Correlation between the presence of tRNAHisGUG and the erythropoietic function in foetal sheep liver

Rosa-Maria Landin*, Monique Boisnard and Guy Petrissant

*Institut de Recherches Scientifiques surle Cancer CNRS, B.P. No 8, 94800 Villejuif Laboratoire de Physiologie de la Lactation - CNRZ - INRA 78350 Jouy-en-Josas, France

Received August 8, 1979. Histidyl-tRNAs from foetal and adult sheep liver were compared to their reticulocyte counterparts. The combination of various techniques revealed the existence of two histidyl-tRNA species in reticulocytes, one of which was not retained on acetylated DRAE-cellulose columns and was guanylatable. Three histidyl-tRNA isoacceptors were identified in foetal liver. Two of these species were not adsorbed on acetylated DBAE-cellulose but only one was found to be guanylatable. An identical chroma-tographic behaviour on RPC-5 columns was observed for guanylated histidyl-tRNAs from both origins. These results suggest the occurrence of a GUG anticodon in these guanine-accepting tRNAs. In foetal liver the amount of guanylatable histidyl-tRNA was estimated to be 7% of the total tRNA population. This observation is in agreement with the erythropoietic function of liver during the foetal life.


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