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    • 9. 发明申请
    • POLYMERASE INCORPORATION OF NON-STANDARD NUCLEOTIDES
    • 聚合物纳入非标准核素
    • US20110124053A1
    • 2011-05-26
    • US12999138
    • 2009-06-16
    • Steven Albert BennerFei ChenZunyi Yang
    • Steven Albert BennerFei ChenZunyi Yang
    • C12P19/34
    • C12Q1/6853C12P19/34C12Q1/686C12Q2521/101C12Q2525/117C12Q2525/191
    • The disclosed invention teaches processes to amplify oligonucleotides by contacting templates and primers with DNA polymerases and triphosphates of non-standard nucleotides, which form nucleobase pairs fitting the standard Watson-Crick geometry, but joined by hydrogen bonding patterns different from those that join standard A:T and G:C pairs. Thus, this invention relates to nucleotide analogs and their derivatives that, when incorporated into DNA and RNA, expand the number of replicatable nucleotides beyond the four found in standard DNA and RNA. The invention further relates to polymerases that incorporate those non-standard nucleotide analogs into oligonucleotide products using the corresponding triphosphate derivatives, and more specifically, polymerases and non-standard nucleoside triphosphates that support the polymerase chain reaction (PCR), including PCR where the products contain more than one non-standard nucleotide unit. Examples are provides that show this process using 6-amino-5-nitro-3-(1′-beta-D-2′-deoxyribofuranosyl)-2(1H)-pyridone to implement the non-standard “small” donor-donor-acceptor (pyDDA) hydrogen bonding pattern, and 2-amino-8-(r-beta-D-2′-deoxyribofuranosyl)-imidazo[1,2-α]-1,3,5-triazin-4(8H)-one to implement the “large” acceptor-acceptor-donor (puADD) pattern.
    • 所公开的发明教导了通过使模板和引物与DNA聚合酶和非标准核苷酸的三磷酸接触来扩增寡核苷酸的过程,其形成适合标准Watson-Crick几何形状的核碱基对,但是通过与加入标准A: T和G:C对。 因此,本发明涉及核苷酸类似物及其衍生物,其在掺入DNA和RNA时扩大超出标准DNA和RNA中发现的四种可重复核苷酸的数量。 本发明还涉及使用相应的三磷酸衍生物,更具体地,支持聚合酶链式反应(PCR)的聚合酶和非标准核苷三磷酸(包括产物含有的PCR)的寡核苷酸产物,将这些非标准核苷酸类似物结合到聚合酶中的聚合酶 多个非标准核苷酸单位。 提供了使用6-氨基-5-硝基-3-(1'-β-D-2'-脱氧三呋喃糖基)-2(1H) - 吡啶酮来实施非标准“小”供体 - 供体 - 受体(pyDDA)氢键图案和2-氨基-8-(r-β-D-2'-脱氧三呋喃糖基) - 咪唑并[1,2-α] -1,3,5-三嗪-4(8H) - 实施“大”受体 - 受体 - 供体(puADD)模式。