Fukutin-related | |||||||||
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Identifiers | |||||||||
Symbol | Fukutin-related | ||||||||
Pfam | PF04991 | ||||||||
InterPro | IPR009644 | ||||||||
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Fukutin is a eukaryotic protein necessary for the maintenance of muscle integrity, cortical histogenesis, and normal ocular development. Mutations in the fukutin gene have been shown to result in Fukuyama congenital muscular dystrophy (FCMD) characterised by brain malformation - one of the most common autosomal-recessive disorders in Japan. [5] In humans this protein is encoded by the FCMD gene (also named FKTN), located on chromosome 9q31. [6] [7] [8] Human fukutin exhibits a length of 461 amino acids and a predicted molecular mass of 53.7 kDa.
Although its function is mostly unknown, fukutin is a putative transmembrane protein that is ubiquitously expressed, although at higher levels in skeletal muscle, heart and brain. [9] It is localized to the cis-Golgi compartment, where it may be involved in the glycosylation of α-dystroglycan in skeletal muscle. The encoded protein is thought to be a glycosyltransferase and could play a role in brain development. [7]
Defects in this gene are a cause of Fukuyama congenital muscular dystrophy (FCMD), Walker-Warburg syndrome (WWS), limb-girdle muscular dystrophy type 2M (LGMD2M), and dilated cardiomyopathy type 1X (CMD1X). [7] [10]
Muscular dystrophy (MD) is a group of muscle diseases that results in increasing weakening and breakdown of skeletal muscles over time. The disorders differ in which muscles are primarily affected, the degree of weakness, how fast they worsen, and when symptoms begin. Many people will eventually become unable to walk. Some types are also associated with problems in other organs.
Fukuyama congenital muscular dystrophy (FCMD) is a rare, autosomal recessive form of muscular dystrophy mainly described in Japan but also identified in Turkish and Ashkenazi Jewish patients; fifteen cases were first described on 1960 by Dr. Yukio Fukuyama.
Derek Blake was, until 2007, the Isobel Laing Post-Doctoral Fellow in Biomedical Sciences, and the Wellcome Trust Senior Fellow in Basic Biomedical Science, Oriel College, Oxford.
Hereditary inclusion body myopathies (HIBM) are a group of rare genetic disorders which have different symptoms. Generally, they are neuromuscular disorders characterized by muscle weakness developing in young adults. Hereditary inclusion body myopathies comprise both autosomal recessive and autosomal dominant muscle disorders that have a variable expression (phenotype) in individuals, but all share similar structural features in the muscles.
Walker–Warburg syndrome (WWS), also called Warburg syndrome, Chemke syndrome, HARD syndrome, Pagon syndrome, cerebroocular dysgenesis (COD) or cerebroocular dysplasia-muscular dystrophy syndrome (COD-MD), is a rare form of autosomal recessive congenital muscular dystrophy. It is associated with brain and eye abnormalities. This condition has a worldwide distribution. The overall incidence is unknown but a survey in North-eastern Italy has reported an incidence rate of 1.2 per 100,000 live births. It is the most severe form of congenital muscular dystrophy with most children dying before the age of three years.
Congenital muscular dystrophies are autosomal recessively-inherited muscle diseases. They are a group of heterogeneous disorders characterized by muscle weakness which is present at birth and the different changes on muscle biopsy that ranges from myopathic to overtly dystrophic due to the age at which the biopsy takes place.
Caveolin-3 is a protein that in humans is encoded by the CAV3 gene. Alternative splicing has been identified for this locus, with inclusion or exclusion of a differentially spliced intron. In addition, transcripts utilize multiple polyA sites and contain two potential translation initiation sites.
Micropolygyria, is a neuronal migration disorder, a developmental anomaly of the brain characterized by development of numerous small convolutions (microgyri), causing intellectual disability and/or other neurological disorders. It is present in a number of specific neurological diseases, notably multiple sclerosis and Fukuyama congenital muscular dystrophy, a specific disease cause by mutation in the Fukutin gene (FKTN).
Laminin subunit alpha-2 is a protein that in humans is encoded by the LAMA2 gene.
Alpha-7 integrin is a protein that in humans is encoded by the ITGA7 gene. Alpha-7 integrin is critical for modulating cell-matrix interactions. Alpha-7 integrin is highly expressed in cardiac muscle, skeletal muscle and smooth muscle cells, and localizes to Z-disc and costamere structures. Mutations in ITGA7 have been associated with congenital myopathies and noncompaction cardiomyopathy, and altered expression levels of alpha-7 integrin have been identified in various forms of muscular dystrophy.
Beta-sarcoglycan is a protein that in humans is encoded by the SGCB gene.
Alpha-sarcoglycan is a protein that in humans is encoded by the SGCA gene.
Ganglioside-induced differentiation-associated protein 1 is a protein that in humans is encoded by the GDAP1 gene.
Protein O-linked-mannose beta-1,2-N-acetylglucosaminyltransferase 1 is an enzyme that in humans is encoded by the POMGNT1 gene.
Protein O-mannosyl-transferase 1 is an enzyme that in humans is encoded by the POMT1 gene. It is a member of the dolichyl-phosphate-mannose-protein mannosyltransferases.
Choline kinase beta (CK), also known as Ethanolamine kinase (EK), Choline kinase-like protein , choline/ethanolamine kinase beta (CKEKB), or Choline/ethanolamine kinase is a protein encoded by the CHKB gene. This gene is found on chromosome 22 in humans. The encoded protein plays a key role in phospholipid biosynthesis. Choline kinase (CK) and ethanolamine kinase (EK) catalyzes the first step in phosphatidylethanolamine biosynthesis. Read-through transcripts are expressed from this locus that include exons from the downstream CPT1B locus.
Protein O-mannosyl-transferase 2 is an enzyme that in humans is encoded by the POMT2 gene.
Glycosyltransferase-like protein LARGE1 is an enzyme that in humans is encoded by the LARGE gene.
Pikachurin, also known as AGRINL (AGRINL) and EGF-like, fibronectin type-III and laminin G-like domain-containing protein (EGFLAM), is a protein that in humans is encoded by the EGFLAM gene.
Muscle–eye–brain (MEB) disease, also known as muscular dystrophy-dystroglycanopathy congenital with brain and eye anomalies A3 (MDDGA3), is a kind of rare congenital muscular dystrophy (CMD), largely characterized by hypotonia at birth. Patients suffer from muscular dystrophy, central nervous system abnormalities and ocular abnormalities, the condition is degenerative.
This article incorporates text from the United States National Library of Medicine, which is in the public domain.
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