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The extent and nature of sequence variation in segmental duplications, which is widespread in the human genome, is poorly understood. A new study provides valuable insights into this issue.
Inactivating mutations in TGFBR2, encoding the transforming growth factor-β (TGFβ) type 2 receptor, may account for up to 10% of cases of Marfan syndrome. This finding has implications for a wider spectrum of disorders, including cancer, fibrosis and inflammatory and cardiovascular diseases, which are influenced by TGFβ.
Vascular endothelial growth factor (VEGF) stimulates angiogenesis, protects neurons from ischemic and degenerative disorders, and triggers the birth of new nerve cells in the adult brain. Now we discover that it is also important for memory and learning.
Two new papers report advances in the understanding of the GNAS complex locus of overlapping and oppositely directed transcripts that are subject to genomic imprinting.
A comprehensive microarray-based analysis of the cell cycle shows that periodic transcription of most genes is not conserved between Schizosaccharomyces pombe and Saccharomyces cerevisiae. A core group of ∼40–80 genes have conserved patterns of transcription and may have key roles in cell cycle progression.