Lamin A (LMNA) Antibody – Mouse Monoclonal

The nuclear lamina consists of a two-dimensional matrix of proteins located next to the inner nuclear membrane. The lamin family of proteins make up the matrix and are highly conserved in evolution. During mitosis, the lamina matrix is reversibly disassembled as the lamin proteins are phosphorylated. Lamin proteins are thought to be involved in nuclear stability, chromatin structure and gene expression. Vertebrate lamins consist of two types, A and B. Alternative splicing results in multiple transcript variants. Mutations in this gene lead to several diseases: Emery-Dreifuss muscular dystrophy, familial partial lipodystrophy, limb girdle muscular dystrophy, dilated cardiomyopathy, Charcot-Marie-Tooth disease, and Hutchinson-Gilford progeria syndrome. [provided by RefSeq, Apr 2012]

lamin A/C: nuclear lamins are intermediate filament proteins that constitute the lattice-like matrix at the inner face of the nuclear membrane that underlies the nuclear envelop. The lamins, highly conserved throughout evolution, are encoded by three genes in the human: LMNA, LMNB1, and LMNB2. The A-type lamins (lamin A/C) are developmentally regulated and are generally expressed in differentiated cells. The anchoring of chromatin to the nuclear lamina is involved in the control of gene expression and in DNA replication and repair. During mitosis, the nuclear lamina is reversibly disassembled as the lamin proteins are phosphorylated. Cleaved by caspase-6 during apoptosis into a 40-45 kDa and a28 kDa fragment.

Protein type: Cytoskeletal

Chromosomal Location of Human Ortholog: 1q22

Cellular Component: cytoplasm; cytosol; extracellular matrix; nuclear envelope; nuclear membrane; nucleoplasm; nucleus

Molecular Function: protein binding

Biological Process: establishment and/or maintenance of microtubule cytoskeleton polarity; mitotic nuclear envelope disassembly; mitotic nuclear envelope reassembly; regulation of cell migration

Disease: Cardiomyopathy, Dilated, 1a; Cardiomyopathy, Dilated, With Hypergonadotropic Hypogonadism; Charcot-marie-tooth Disease, Axonal, Type 2b1; Emery-dreifuss Muscular Dystrophy 2, Autosomal Dominant; Emery-dreifuss Muscular Dystrophy 3, Autosomal Recessive; Heart-hand Syndrome, Slovenian Type; Hutchinson-gilford Progeria Syndrome; Lipodystrophy, Familial Partial, Type 2; Mandibuloacral Dysplasia With Type A Lipodystrophy; Muscular Dystrophy, Congenital, Lmna-related; Muscular Dystrophy, Limb-girdle, Type 1b; Restrictive Dermopathy, Lethal