期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 102, 期 42, 页码 15173-15177出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.0409558102
关键词
embryonic lethality; H beta 58; vacuolar protein sorting; cation-independent mannose 6-phosphate receptor; yolk sac
资金
- NICHD NIH HHS [F32 HD042938] Funding Source: Medline
We have previously shown that the putative mammalian retromer components sorting nexins 1 and 2 (Snx1 and Snx2) result in embryonic lethality when simultaneously targeted for deletion in mice, whereas others have shown that H beta 58 (also known as mVps26), another retromer component, results in similar lethality when targeted for deletion. In the current study, we address the genetic interaction of these mammalian retromer components in mice. Our findings reveal a functional interaction between H beta 58, SNX1, and SNX2 and strongly suggest that SNX2 plays a more critical role than SNX1 in retromer activity during embryonic development. This genetic evidence supports the existence of mammalian retromer complexes containing SNX1 and SNX2 and identifies SNX2 as an important mediator of retromer biology. Moreover, we find that mammalian retromer complexes containing SNX1 and SNX2 have an essential role in embryonic development that is independent of cation-independent mannose 6-phosphate receptor trafficking.
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