USER™(尿嘧啶-特异性切除试剂)酶在尿嘧啶位置产生一个单核苷酸缺口。USER 酶是尿嘧啶 DNA 糖基化酶(UDG)和 DNA 糖基化酶-裂解酶 Endo VIII 的混合物。UDG 催化尿嘧啶碱基的切割,形成一个脱碱基(脱嘧啶)位点,但保持磷酸二酯骨架结构完整。Endo VIII 的裂解酶活力使脱碱基位点 3´ 和 5´ 端的磷酸二酯键断裂,释放无碱基的脱氧核糖。
人类烷基腺嘌呤 DNA 糖基化酶(hAAG)作用于烷基化和氧化了的 DNA 损伤位点,包括 3-甲基腺嘌呤、7-甲基鸟嘌呤、1,N6-乙烯基腺嘌呤和次黄嘌呤。hAAG 催化 N-糖苷键的水解断裂,释放受损碱基。hAAG 也被称作甲基嘌呤 DNA 糖基化酶(MPG)或 3-甲基腺嘌呤-DNA 糖基化酶(ANPG)。
biotechrabbit™ Heat Labile Uracil–DNA Glycosylase selectively degrades uracil-containing PCR products. After performing PCR or RT-PCR using dUTP instead of dTTP, PCR products remain intact after treatment with Heat Labile Uracil–DNA Glycosylase, whereas contaminating DNA (i.e., not amplified) is degraded. Heat Labile Uracil–DNA Glycosylase is completely and irreversibly inactivated by moderate heat treatment at 50⁰C, allowing contamination control in RT-qPCR. The enzyme hydrolyses the N-glycosylic bond between the deoxyribose sugar and the base in uracil-containing DNA leaving an abasic (apyrimidinic) site in DNA but does not modify uracils in RNA.
Heat Labile Uracil–DNA Glycosylase is highly active at 20–40°C. No cofactors or divalent cations are required for activity, and the enzyme is active in most PCR and RT-PCR buffers. Although the enzyme is active a pH 6.5–9.0, the optimal pH 7.5 is in 50 mM NaCl.
USER™(尿嘧啶-特异性切除试剂)酶在尿嘧啶位置产生一个单核苷酸缺口。USER 酶是尿嘧啶 DNA 糖基化酶(UDG)和 DNA 糖基化酶-裂解酶 Endo VIII 的混合物。UDG 催化尿嘧啶碱基的切割,形成一个脱碱基(脱嘧啶)位点,但保持磷酸二酯骨架结构完整。Endo VIII 的裂解酶活力使脱碱基位点 3´ 和 5´ 端的磷酸二酯键断裂,释放无碱基的脱氧核糖。
biotechrabbit™ Heat Labile Uracil–DNA Glycosylase selectively degrades uracil-containing PCR products. After performing PCR or RT-PCR using dUTP instead of dTTP, PCR products remain intact after treatment with Heat Labile Uracil–DNA Glycosylase, whereas contaminating DNA (i.e., not amplified) is degraded. Heat Labile Uracil–DNA Glycosylase is completely and irreversibly inactivated by moderate heat treatment at 50⁰C, allowing contamination control in RT-qPCR. The enzyme hydrolyses the N-glycosylic bond between the deoxyribose sugar and the base in uracil-containing DNA leaving an abasic (apyrimidinic) site in DNA but does not modify uracils in RNA.
Heat Labile Uracil–DNA Glycosylase is highly active at 20–40°C. No cofactors or divalent cations are required for activity, and the enzyme is active in most PCR and RT-PCR buffers. Although the enzyme is active a pH 6.5–9.0, the optimal pH 7.5 is in 50 mM NaCl.