Characterization of human T-cell leukemia virus type I integrase expressed in Escherichia coli.
Characterization of human T-cell leukemia virus type I integrase expressed in Escherichia coli.
复制标题
在大肠杆菌中表达的人 T 细胞白血病病毒 I 型整合酶的表征。
DOI:
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发表时间:
1999
期刊:
影响因子:
--
通讯作者:
H. Kräusslich
中科院分区:
文献类型:
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作者:
B. Müller;H. Kräusslich
The C-terminal part of the pol gene of the human T-cell leukemia virus type I (HTLV-I) is predicted to encode the integrase (IN) of the virus; however, this protein has not yet been detected in virions or infected cells. We expressed the putative IN from an infectious molecular clone of HTLV-I in Escherichia coli. Comparison with protein resulting from coexpression of HTLV-I protease (PR) and Pol in insect cells indicated that the bacterially expressed protein is identical with or very similar to IN released from a PR-Pol precursor by proteolytic cleavage. HTLV-I IN was purified from E. coli under native conditions. The protein behaved like a dimer in size-exclusion chromatography. It carried out activities characteristic of retroviral IN with high efficiency, displaying a strong preference for U5-derived vs. U3-derived sequences in the processing and strand-transfer reactions. In the disintegration reaction, HTLV-I IN not only accepted the double-stranded branched substrate corresponding to the product of a strand-transfer reaction, but was also able to carry out a phosphoryl transfer on a branched molecule with a single-stranded or a single adenosine overhang.
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DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Jones,KS;Coleman,J;Merkel,GW;Laue,TM;Skalka,AM
通讯作者:
Skalka,AM
影响因子:
10.5
作者:
KUKOLJ, G;SKALKA, AM
通讯作者:
SKALKA, AM
影响因子:
56.9
作者:
CHOW, SA;VINCENT, KA;BROWN, PO
通讯作者:
BROWN, PO
影响因子:
3.7
作者:
Balakrishnan,M;Zastrow,D;Jonsson,CB
通讯作者:
Jonsson,CB
影响因子:
3.7
作者:
Kulkosky,J;Katz,RA;Merkel,G;Skalka,AM
通讯作者:
Skalka,AM