The N-terminus of FILIA Forms an Atypical KH Domain with a Unique Extension Involved in Interaction with RNA.
Wang, J., Xu, M., Zhu, K., Li, L., Liu, X.(2012) PLoS One 7: e30209-e30209
- PubMed: 22276159
- DOI: https://doi.org/10.1371/journal.pone.0030209
- Primary Citation of Related Structures:
3V69 - PubMed Abstract:
FILIA is a member of the recently identified oocyte/embryo expressed gene family in eutherian mammals, which is characterized by containing an N-terminal atypical KH domain. Here we report the structure of the N-terminal fragment of FILIA (FILIA-N), which represents the first reported three-dimensional structure of a KH domain in the oocyte/embryo expressed gene family of proteins. The structure of FILIA-N revealed a unique N-terminal extension beyond the canonical KH region, which plays important roles in interaction with RNA. By co-incubation with the lysates of mice ovaries, FILIA and FILIA-N could sequester specific RNA components, supporting the critical roles of FILIA in regulation of RNA transcripts during mouse oogenesis and early embryogenesis.
Organizational Affiliation:
State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China.