Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:2.7.7.48 (
transcriptase
)
9,479
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Although the unique mechanism by which hepatitis B virus (HBV) polymerase primes reverse transcription is now well-characterized, the subsequent elongation process remains poorly understood. Reverse
transcriptase
(RT)-
RNase H
sequences from polymerase amino acid 304 (the C-terminal part of spacer domain) to 843 were expressed in Escherichia coli and purified partially. RT elongation activity was investigated using the fluorescent-tagged primer and homopolymeric RNA templates. RT elongation activity depended on both Mg
2+
and Mn
2+
, and had low affinity for purine deoxynucleotides, which may be related with the success of adefovir, tenofovir, and entecavir. However, the polymerization rate was lower than that of human immunodeficiency virus RT. All HBV genotypes displayed similar RT activity, except for genotype B, which demonstrated increased elongation activity.
...
PMID:Fluorescence-based biochemical analysis of human hepatitis B virus reverse transcriptase activity. 3217 77
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