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DNA Deamination in Antibody Diversity

DNA Deamination in Antibody Diversity
抗体多样性中的 DNA 脱氨基作用
批准号:
8552446
负责人:
PATRICIA J GEARHART
金额:
$17.02万
依托单位:
依托单位国家:
美国
项目类别:
财政年份:
--
资助国家:
美国
项目状态:
未结题
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中文摘要
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英文摘要
Two opposing models have been proposed for AID to deaminate either DNA or RNA. Although most data supports DNA deamination, there is no physical evidence for uracils in immunoglobulin genes. Here we demonstrate their presence by determining the sensitivity of DNA to digestion with uracil DNA glycosylase and abasic endonuclease. Using several methods of detection, we identified uracils in the variable and switch regions. Uracils were generated within 24 hours after B cell stimulation, were found on both DNA strands, and were enriched in hotspot motifs. This data provides direct evidence for the model that AID functions by deaminating cytosine in DNA. In addition, we have shown the XRCC1 protein is involved in repairing the uracils.
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DOI: 10.1084/jem.20080086
发表时间: 2009-01-16
期刊: The Journal of experimental medicine
影响因子: --
作者: [Maul RW, Gearhart PJ]
通讯作者: Gearhart PJ
DOI: 10.1084/jem.20111135
发表时间: 2011-10-24
期刊: The Journal of experimental medicine
影响因子: --
作者: [Saribasak H, Maul RW, Cao Z, McClure RL, Yang W, McNeill DR, Wilson DM 3rd, Gearhart PJ]
通讯作者: Gearhart PJ
GENERATION OF ANTIBODY DIVERSITY
  • 批准号:
    3301928
  • 项目类别:
  • 资助金额:
    $28.11万
  • 财政年份:
    1989
  • 负责人:
    PATRICIA J GEARHART
  • 依托单位:
GENERATION OF ANTIBODY DIVERSITY
  • 批准号:
    3301931
  • 项目类别:
  • 资助金额:
    $29.66万
  • 财政年份:
    1989
  • 负责人:
    PATRICIA J GEARHART
  • 依托单位:
GENERATION OF ANTIBODY DIVERSITY
  • 批准号:
    2181754
  • 项目类别:
  • 资助金额:
    $29.47万
  • 财政年份:
    1989
  • 负责人:
    PATRICIA J GEARHART
  • 依托单位:
REARRANGEMENT OF VK GENES DURING ONTOGENY
  • 批准号:
    3301930
  • 项目类别:
  • 资助金额:
    $17.13万
  • 财政年份:
    1989
  • 负责人:
    PATRICIA J GEARHART
  • 依托单位:
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