BSCL2 cdna clone
BSCL2 cDNA Clone
NCBI and Uniprot Product Information
NCBI Description
This gene encodes the multi-pass transmembrane protein protein seipin. This protein localizes to the endoplasmic reticulum and may be important for lipid droplet morphology. Mutations in this gene have been associated with congenital generalized lipodystrophy type 2 or Berardinelli-Seip syndrome, a rare autosomal recessive disease characterized by a near absence of adipose tissue and severe insulin resistance. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. Naturally occurring read-through transcription occurs between this locus and the neighboring locus HNRNPUL2 (heterogeneous nuclear ribonucleoprotein U-like 2).[provided by RefSeq, Mar 2011]
Uniprot Description
BSCL2: Is a regulator of lipid catabolism essential for adipocyte differentiation. Necessary for correct lipid storage and lipid droplets maintenance. Defects in BSCL2 are the cause of congenital generalized lipodystrophy type 2 (CGL2). Congenital generalized lipodystrophy is an autosomal recessive disorder characterized by a near absence of adipose tissue, extreme insulin resistance, hypertriglyceridemia, hepatic steatosis and early onset of diabetes. Defects in BSCL2 are the cause of spastic paraplegia type 17 (SPG17); also known as Silver spastic paraplegia syndrome. Spastic paraplegia is a neurodegenerative disorder characterized by a slow, gradual, progressive weakness and spasticity of the lower limbs. SPG17 is characterized by prominent amyotrophy of the hand muscles, the presence of mild to severe pyramidal tract signs, and spastic paraplegia. SPG17 is a motor neuron disease overlapping with distal spinal muscular atrophy type 5. Defects in BSCL2 are a cause of distal hereditary motor neuronopathy type 5A (HMN5A); also known as distal hereditary motor neuropathy type V (DSMAV). A disorder characterized by distal muscular atrophy mainly affecting the upper extremities, in contrast to other distal motor neuronopathies. These constitute a heterogeneous group of neuromuscular diseases caused by selective degeneration of motor neurons in the anterior horn of the spinal cord, without sensory deficit in the posterior horn. The overall clinical picture consists of a classical distal muscular atrophy syndrome in the legs without clinical sensory loss. The disease starts with weakness and wasting of distal muscles of the anterior tibial and peroneal compartments of the legs. Later on, weakness and atrophy may expand to the proximal muscles of the lower limbs and/or to the distal upper limbs. Belongs to the seipin family. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Membrane protein, multi-pass; Membrane protein, integral
Chromosomal Location of Human Ortholog: 11q13
Cellular Component: integral to endoplasmic reticulum membrane
Molecular Function: protein binding
Biological Process: fat cell differentiation; negative regulation of lipid catabolic process; sequestering of lipid
Disease: Encephalopathy, Progressive, With Or Without Lipodystrophy; Lipodystrophy, Congenital Generalized, Type 2; Neuronopathy, Distal Hereditary Motor, Type Va; Spastic Paraplegia 17, Autosomal Dominant
