Many cell types display the remarkable ability to alter their cellular phenotype in response specific external or internal signals. Such phenotypic plasticity is apparent nematode Caenorhabditis elegans when adverse environmental conditions trigger entry into dauer diapause stage. This accompanied by structural, molecular, and functional remodeling of a number distinct tissue animal, including ...

NirA, the specific transcription factor of the nitrate assimilation pathway of Aspergillus nidulans, accumulates in the nucleus upon induction by nitrate. NirA interacts with the nuclear export factor KapK, which bridges an interaction with a protein of the nucleoporin-like family (NplA). Nitrate induction disrupts the NirA-KapK interaction in vivo, whereas KapK associates with NirA when this p...

There is long-standing recognition that transformed and tumor cells exhibit striking alterations in nuclear morphology as well as in the representation and intranuclear distribution of nucleic acids and regulatory factors. Parameters of nuclear structure support cell growth and phenotypic properties of cells by facilitating the organization of genes, replication and transcription sites, chromat...

Actin, a major component of the cytoplasm, is also abundant in the nucleus. Nuclear actin is involved in a variety of nuclear processes including transcription, chromatin remodeling, and intranuclear transport. Nevertheless, the regulation of nuclear actin by posttranslational modifications has not been investigated. We now show that nuclear actin is modified by SUMO2 and SUMO3 and that computa...

There is long-standing recognition that transformed and tumor cells exhibit striking alterations in nuclear morphology as well as in the representation and intranuclear distribution of nucleic acids and regulatory factors. Parameters of nuclear structure support cell growth and phenotypic properties of cells by facilitating the organization of genes, replication and transcription sites, chromat...

10.1083/jcb.2047iti1jcb.2047iti1Ben [email protected] g1.epsIn This IssueNews UN proteins melt the nuclear envelope T urgay et al. reveal that SUN proteins help disassemble the nuclear envelope at the start of mitosis and promote assembly of the mitotic spindle during metaphase. Ea...

the widespread use of sulfur mustard  (sm) as a chemical warfare agent in the  past century has proved its long-lasting toxic effects. despite a lot of research over the past decades on iranian veterans, there are still major gaps in the sm literature. transforming growth  factor  (tgf-β),  a  cytokine  that  affects  many  different  cell processes,  has  an important role in the lungs of pati...