Human Gene FBN1 (ENST00000316623.10) Description and Page Index
Description: Homo sapiens fibrillin 1 (FBN1), mRNA. (from RefSeq NM_000138) RefSeq Summary (NM_000138): This gene encodes a member of the fibrillin family of proteins. The encoded preproprotein is proteolytically processed to generate two proteins including the extracellular matrix component fibrillin-1 and the protein hormone asprosin. Fibrillin-1 is an extracellular matrix glycoprotein that serves as a structural component of calcium-binding microfibrils. These microfibrils provide force-bearing structural support in elastic and nonelastic connective tissue throughout the body. Asprosin, secreted by white adipose tissue, has been shown to regulate glucose homeostasis. Mutations in this gene are associated with Marfan syndrome and the related MASS phenotype, as well as ectopia lentis syndrome, Weill-Marchesani syndrome, Shprintzen-Goldberg syndrome and neonatal progeroid syndrome. [provided by RefSeq, Apr 2016]. Sequence Note: This RefSeq record was created from transcript and genomic sequence data to make the sequence consistent with the reference genome assembly. The genomic coordinates used for the transcript record were based on transcript alignments. Gencode Transcript: ENST00000316623.10 Gencode Gene: ENSG00000166147.14 Transcript (Including UTRs) Position: hg38 chr15:48,408,313-48,645,709 Size: 237,397 Total Exon Count: 66 Strand: - Coding Region Position: hg38 chr15:48,410,990-48,644,769 Size: 233,780 Coding Exon Count: 65
ID:FBN1_HUMAN DESCRIPTION: RecName: Full=Fibrillin-1; Flags: Precursor; FUNCTION: Fibrillins are structural components of 10-12 nm extracellular calcium-binding microfibrils, which occur either in association with elastin or in elastin-free bundles. Fibrillin-1- containing microfibrils provide long-term force bearing structural support. Regulates osteoblast maturation by controlling TGF-beta bioavailability and calibrating TGF-beta and BMP levels, respectively (By similarity). SUBUNIT: Interacts with COL16A1. Interacts with integrin alpha- V/beta-3. Interacts with ADAMTSL4. Interacts with ADAMTS10; this interaction promotes microfibrils assembly. Interacts with THSD4; this interaction promotes fibril formation (By similarity). INTERACTION: O95967:EFEMP2; NbExp=3; IntAct=EBI-2505934, EBI-743414; Q9UBX5:FBLN5; NbExp=3; IntAct=EBI-2505934, EBI-947897; P28300:LOX; NbExp=2; IntAct=EBI-2505934, EBI-3893481; SUBCELLULAR LOCATION: Secreted, extracellular space, extracellular matrix. PTM: Forms intermolecular disulfide bonds either with other fibrillin-1 molecules or with other components of the microfibrils. DISEASE: Defects in FBN1 are a cause of Marfan syndrome (MFS) [MIM:154700]. MFS is an autosomal dominant disorder that affects the skeletal, ocular, and cardiovascular systems. A wide variety of skeletal abnormalities occurs with MFS, including scoliosis, chest wall deformity, tall stature, abnormal joint mobility. Ectopia lentis occurs in up to about 80% of MFS patients and is almost always bilateral. The leading cause of premature death in MFS patients is progressive dilation of the aortic root and ascending aorta, causing aortic incompetence and dissection. Note=The majority of the more than 600 mutations in FBN1 currently known are point mutations, the rest are frameshifts and splice site mutations. Marfan syndrome has been suggested in at least 2 historical figures, Abraham Lincoln and Paganini. DISEASE: Defects in FBN1 are a cause of ectopia lentis, isolated, autosomal dominant (ECTOL1) [MIM:129600]. An ocular abnormality characterized by partial or complete displacement of the lens from its space resulting from defective zonule formation. DISEASE: Defects in FBN1 are the cause of Weill-Marchesani syndrome 2 (WMS2) [MIM:608328]. A rare connective tissue disorder characterized by short stature, brachydactyly, joint stiffness, and eye abnormalities including microspherophakia, ectopia lentis, severe myopia and glaucoma. DISEASE: Defects in FBN1 are a cause of Shprintzen-Goldberg craniosynostosis syndrome (SGS) [MIM:182212]. SGS is a very rare syndrome characterized by a marfanoid habitus, craniosynostosis, characteristic dysmorphic facial features, skeletal and cardiovascular abnormalities, mental retardation, developmental delay and learning disabilities. DISEASE: Defects in FBN1 are a cause of overlap connective tissue disease (OCTD) [MIM:604308]. A heritable disorder of connective tissue characterized by involvement of the mitral valve, aorta, skeleton, and skin. MASS syndrome is closely resembling both the Marfan syndrome and the Barlow syndrome. However, no dislocation of the lenses or aneurysmal changes occur in the aorta, and the mitral valve prolapse is by no means invariable. DISEASE: Defects in FBN1 are a cause of stiff skin syndrome (SSKS) [MIM:184900]. It is a syndrome characterized by hard, thick skin, usually over the entire body, which limits joint mobility and causes flexion contractures. Other occasional findings include lipodystrophy and muscle weakness. DISEASE: Defects in FBN1 are the cause of geleophysic dysplasia type 2 (GPHYSD2) [MIM:614185]. An autosomal dominant disorder characterized by severe short stature, short hands and feet, joint limitations, and skin thickening. Radiologic features include delayed bone age, cone-shaped epiphyses, shortened long tubular bones, and ovoid vertebral bodies. Affected individuals have characteristic facial features including a 'happy' face with full cheeks, shortened nose, hypertelorism, long and flat philtrum, and thin upper lip. Other distinctive features include progressive cardiac valvular thickening often leading to an early death, toe walking, tracheal stenosis, respiratory insufficiency, and lysosomal-like storage vacuoles in various tissues. DISEASE: Defects in FBN1 are the cause of acromicric dysplasia (ACMICD) [MIM:102370]. An autosomal dominant disorder characterized by severe short stature, short hands and feet, joint limitations, and skin thickening. Radiologic features include delayed bone age, cone-shaped epiphyses, shortened long tubular bones, and ovoid vertebral bodies. Affected individuals have distinct facial features, including round face, well-defined eyebrows, long eyelashes, bulbous nose with anteverted nostrils, long and prominent philtrum, and thick lips with a small mouth. Other characteristic features include hoarse voice and pseudomuscular build, and there are distinct skeletal features as well, including an internal notch of the femoral head, internal notch of the second metacarpal, and external notch of the fifth metacarpal. SIMILARITY: Belongs to the fibrillin family. SIMILARITY: Contains 47 EGF-like domains. SIMILARITY: Contains 9 TB (TGF-beta binding) domains. SEQUENCE CAUTION: Sequence=CAA45118.1; Type=Erroneous initiation; Note=Translation N-terminally shortened; WEB RESOURCE: Name=GeneReviews; URL="http://www.ncbi.nlm.nih.gov/sites/GeneTests/lab/gene/FBN1";
The RNAfold program from the Vienna RNA Package is used to perform the secondary structure predictions and folding calculations. The estimated folding energy is in kcal/mol. The more negative the energy, the more secondary structure the RNA is likely to have.
ModBase Predicted Comparative 3D Structure on P35555
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Orthologous Genes in Other Species
Orthologies between human, mouse, and rat are computed by taking the best BLASTP hit, and filtering out non-syntenic hits. For more distant species reciprocal-best BLASTP hits are used. Note that the absence of an ortholog in the table below may reflect incomplete annotations in the other species rather than a true absence of the orthologous gene.