Fukutin

Last updated
FKTN
Identifiers
Aliases FKTN , CMD1X, FCMD, LGMD2M, MDDGA4, MDDGB4, MDDGC4, fukutin, LGMDR13
External IDs OMIM: 607440 MGI: 2179507 HomoloGene: 31402 GeneCards: FKTN
Gene location (Human)
Ideogram human chromosome 9.svg
Chr. Chromosome 9 (human) [1]
Human chromosome 9 ideogram.svg
HSR 1996 II 3.5e.svg
Red rectangle 2x18.png
Band 9q31.2Start105,558,130 bp [1]
End105,641,118 bp [1]
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_139309
NM_001363126
NM_001363127
NM_001363128

RefSeq (protein)

NP_647470
NP_001350055
NP_001350056
NP_001350057

Location (UCSC) Chr 9: 105.56 – 105.64 Mb Chr 4: 53.71 – 53.78 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse
Fukutin-related
Identifiers
SymbolFukutin-related
Pfam PF04991
InterPro IPR009644

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.

Function

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]

Clinical significance

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]

See also

Related Research Articles

Muscular dystrophy

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

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

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 dystrophy

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

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, alpha 2

Laminin subunit alpha-2 is a protein that in humans is encoded by the LAMA2 gene.

Integrin alpha 7

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.

SGCB

Beta-sarcoglycan is a protein that in humans is encoded by the SGCB gene.

SGCA

Alpha-sarcoglycan is a protein that in humans is encoded by the SGCA gene.

GDAP1

Ganglioside-induced differentiation-associated protein 1 is a protein that in humans is encoded by the GDAP1 gene.

POMGNT1 Human gene

Protein O-linked-mannose beta-1,2-N-acetylglucosaminyltransferase 1 is an enzyme that in humans is encoded by the POMGNT1 gene.

POMT1

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.

CHKB (gene)

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.

POMT2

Protein O-mannosyl-transferase 2 is an enzyme that in humans is encoded by the POMT2 gene.

LARGE Human enzyme present in the golgi body

Glycosyltransferase-like protein LARGE1 is an enzyme that in humans is encoded by the LARGE gene.

Pikachurin Protein-coding gene in the species Homo sapiens

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 disease

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.

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000106692 - Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000028414 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Kobayashi K, Shimizu T, Arai K, Nakamura Y, Fukui T, Toda T, Matsumura K, Imamura M, Takeda S, Kondo M, Sasaki J, Kurahashi H, Kano H, Misaki K, Tachikawa M, Murakami T, Sunada Y, Fujikado T, Terashima T (2003). "Fukutin is required for maintenance of muscle integrity, cortical histiogenesis and normal eye development". Hum. Mol. Genet. 12 (12): 1449–1459. doi: 10.1093/hmg/ddg153 . PMID   12783852.
  6. Toda T, Segawa M, Nomura Y, Nonaka I, Masuda K, Ishihara T, Sakai M, Tomita I, Origuchi Y, Suzuki M (November 1993). "Localization of a gene for Fukuyama type congenital muscular dystrophy to chromosome 9q31-33". Nat. Genet. 5 (3): 283–6. doi:10.1038/ng1193-283. PMID   8275093. S2CID   21435748.
  7. 1 2 3 "Entrez Gene: fukutin".
  8. Online Mendelian Inheritance in Man (OMIM): 607440
  9. Hayashi YK, Ogawa M, Tagawa K, Noguchi S, Ishihara T, Nonaka I, Arahata K (July 2001). "Selective deficiency of alpha-dystroglycan in Fukuyama-type congenital muscular dystrophy". Neurology. 57 (1): 115–21. doi:10.1212/wnl.57.1.115. PMID   11445638. S2CID   86733816.
  10. Murakami T, Hayashi YK, Noguchi S, et al. (November 2006). "Fukutin gene mutations cause dilated cardiomyopathy with minimal muscle weakness". Ann. Neurol. 60 (5): 597–602. CiteSeerX   10.1.1.515.1578 . doi:10.1002/ana.20973. PMID   17036286.

Further reading

This article incorporates text from the United States National Library of Medicine, which is in the public domain.