TY - JOUR
T1 - Protein isoforms encoded by the pX region of human T-cell leukemia/lymphotropic virus type I
AU - Koralnik, I. J.
AU - Gessain, A.
AU - Klotman, M. E.
AU - Lo Monico, A.
AU - Berneman, Z. N.
AU - Franchini, G.
PY - 1992
Y1 - 1992
N2 - The pX region of the human T-cell leukemia/lymphotropic virus type I (HTLV-I) contains at least four open reading frames (orf I-orf IV). orf III and orf IV encode the regulatory HTLV-I proteins Rex and Tax, which together modulate viral expression, and the p21(rex) protein of unknown function. By using the reverse transcriptase and polymerase chain reaction techniques on the RNA of an HTLV-I-infected cell culture, we uncovered the existence of alternatively spliced mRNAs generated through the use of three splice acceptor sites. These mRNAs encoded protein isoforms derived from the HTLV-I orf I (p12(I)) and orf II (p13(II) and p30(II)). An additional acceptor splice site, used in the processing of the env and tax/rex mRNAs and a singly spliced mRNA for the p21(rex) protein, was also identified. All of these HTLV-I mRNAs were also detected in freshly isolated cells from HTLV-I- infected individuals. Thus HTLV-I, like the human immunodeficiency virus type 1, has developed fine posttranscriptional mechanisms to increase the complexity of its genome.
AB - The pX region of the human T-cell leukemia/lymphotropic virus type I (HTLV-I) contains at least four open reading frames (orf I-orf IV). orf III and orf IV encode the regulatory HTLV-I proteins Rex and Tax, which together modulate viral expression, and the p21(rex) protein of unknown function. By using the reverse transcriptase and polymerase chain reaction techniques on the RNA of an HTLV-I-infected cell culture, we uncovered the existence of alternatively spliced mRNAs generated through the use of three splice acceptor sites. These mRNAs encoded protein isoforms derived from the HTLV-I orf I (p12(I)) and orf II (p13(II) and p30(II)). An additional acceptor splice site, used in the processing of the env and tax/rex mRNAs and a singly spliced mRNA for the p21(rex) protein, was also identified. All of these HTLV-I mRNAs were also detected in freshly isolated cells from HTLV-I- infected individuals. Thus HTLV-I, like the human immunodeficiency virus type 1, has developed fine posttranscriptional mechanisms to increase the complexity of its genome.
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U2 - 10.1073/pnas.89.18.8813
DO - 10.1073/pnas.89.18.8813
M3 - Article
C2 - 1528897
AN - SCOPUS:0026687352
VL - 89
SP - 8813
EP - 8817
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
SN - 0027-8424
IS - 18
ER -