607
Entry URI http://metadb.riken.jp/db/SciNetS_ria224i/cria224u4ria224u17488242i
Entry name Jiang Ling et al. 2007 Jun. Plant J. 50(6):1020-34.
Title The Arabidopsis cohesin protein SYN3 localizes to the nucleolus and is essential for gametogenesis.
Authors Jiang Ling|Makaroff Christopher A|Strittmatter Lara I|Xia Ming
Abstract Alpha-kleisins are core components of meiotic and mitotic cohesin complexes. Arabidopsis contains genes for four alpha-kleisin proteins encoded by SYN genes. SYN1, a REC8 ortholog, is essential for meiosis, while SYN2 and SYN4 appear to be SCC1 orthologs and function in mitosis. Our analysis of AtSYN3 shows that it localizes primarily in the nucleolus of both meiotic and mitotic cells. Furthermore, analysis of plants containing an AtSYN3 T-DNA knockout mutation demonstrated that it is essential for megagametogenesis and plays an important role in pollen. These results suggest that SYN3 may not function as part of a typical cohesin complex; rather it may have evolved a specialized role in controlling rDNA structure, transcription or rRNA processing.
Pubmed ID 17488242
Journal The Plant journal
Volume 50
Issue 6
Pages 1020-34
Publication date 2007 Jun
Num of phenotype gene 0