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Basic Characteristics of Mutations
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Mutation Site
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A289G |
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Mutation Site Sentence
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Table 2 |
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Mutation Level
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Nucleotide level |
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Mutation Type
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Nonsynonymous substitution |
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Gene/Protein/Region
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E6 |
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Standardized Encoding Gene
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E6
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Genotype/Subtype
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HPV16 |
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Viral Reference
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-
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Functional Impact and Mechanisms
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Disease
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Uterine Cervical Diseases
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Immune
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- |
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Target Gene
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-
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Clinical and Epidemiological Correlations
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Clinical Information
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Y |
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Treatment
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- |
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Location
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USA |
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Literature Information
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PMID
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15721413
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Title
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Human papillomavirus type 16 E2 and E6/E7 variants
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Author
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Swan DC,Rajeevan M,Tortolero-Luna G,Follen M,Tucker RA,Unger ER
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Journal
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Gynecologic oncology
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Journal Info
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2005 Mar;96(3):695-700
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Abstract
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OBJECTIVES: Polymorphisms in human papillomavirus (HPV) type 16 have been shown to be related to geographic areas and are broadly classified as European (E), African (Af), Asian (As), or Asian-American (AA). Certain variants have been reported as being more likely to cause cervical disease; our objectives were to identify new HPV16 polymorphisms, to determine the linkage of the E2 and E6/E7 regions and to determine the minimum sequence necessary to classify variants. METHODS: We sequenced the complete E2, E6, and E7 regions in all HPV16-positive cervical samples identified in a case-control study of pre-invasive cervical disease. RESULTS: In the 100 samples analyzed, only one new polymorphism was identified, a synonymous change, T3205A, in region E2. The frequency distribution of variants in the sample set was 37 European prototypes and 27 E-G350, 16 AA, 5 Af1, 2 Af2, 8 E-C109G, 3 E-G131G, and 2 As. As shown by others, region E7 varied much less than E6 and E2. CONCLUSIONS: In each case, E2 changes were linked to the expected E6/E7 changes, and there was no evidence for recombination. The linkage between E2 and E6/E7 allows variant classification to be based on a short E6 sequence (nt 109-350).
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Sequence Data
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-
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