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Lamin B2 Antibody- Mouse Anti-Lamin B2
An important part of the cell nucleus is formed by nuclear lamina Nuclear lamins form a network of filaments at the nucleoplasmic site of the nuclear membrane Two main subtypes of nuclear lamins can be distinguished ie A-type lamins and B-type lamins The A-type lamins comprise a set of three proteins arising from the same gene by alternative splicing ie lamin A lamin C and lamin Adel10 while the B-type lamins include two proteins arising from two distinct genes ie lamin B1 and lamin B2 The nuclear lamins comprise a unique subclass of the intermediate filament protein family They share a molecular domain organisation with the other intermediate filament proteins in that they are fibrous molecules that have an aminoterminal globular head a central rod of a-helices and a carboxyterminal globular domain Many biochemical and molecular features of lamins have been studied but their functions remain still largely undetermined One of the functions ascribed to the lamina is the maintenance of the structural integrity of the nucleus Besides interactions with the nuclear membrane and other intermediate filaments lamins interact with the nuclear chromatin Eukaryotic chromatin is organised into loops which are attached to the nuclear matrix This organisation is thought to contribute to compaction of the chromatin and regulation of gene expression Lamins as part of the nuclear matrix may be involved in these processes since chromatin binding sites have been detected in both A- and B-type lamins
£183.00
Ran Antibody- Rabbit Anti-Ran
Ran (ras-related nuclear protein) is a small GTP binding protein belonging to the RAS superfamily that is essential for the translocation of RNA and proteins through the nuclear pore complex The Ran protein is also involved in control of DNA synthesis and cell cycle progression Nuclear localization of Ran requires the presence of regulator of chromosome condensation 1 (RCC1) Mutations in Ran disrupt DNA synthesis Because of its many functions it is likely that Ran interacts with several other proteins Ran regulates formation and organization of the microtubule network independently of its role in the nucleus-cytosol exchange of macromolecules Ran could be a key signaling molecule regulating microtubule polymerization during mitosis RCC1 generates a high local concentration of Ran-GTP around chromatin which in turn induces the local nucleation of microtubules Ran is an androgen receptor (AR) coactivator that binds differentially with different lengths of polyglutamine within the androgen receptor Polyglutamine repeat expansion in the AR is linked to Kennedys disease (X-linked spinal and bulbar muscular atrophy) Ran coactivation of the AR diminishes with polyglutamine expansion within the AR and this weak coactivation may lead to partial androgen insensitivity during the development of Kennedys disease
£183.00
