Cartilage oligomeric matrix protein: Difference between revisions

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== Function ==
== Function ==


The [[protein]] encoded by this gene is a noncollagenous [[extracellular matrix]] (ECM) [[protein]].<ref name=pmid7325960>{{cite journal | vauthors = Paulsson M, Heinegård D | title = Purification and structural characterization of a cartilage matrix protein | journal = The Biochemical Journal | volume = 197 | issue = 2 | pages = 367–75 | date = Aug 1981 | pmid = 7325960 | pmc = 1163135 | doi=10.1042/bj1970367}}</ref> It consists of five identical [[glycoprotein]] subunits, each with [[EGF-like domain|EGF-like]] and calcium-binding ([[thrombospondin]]-like) domains. Oligomerization results from formation of a five-stranded [[coiled coil]] and [[disulfide bond]]s. Binding to other ECM proteins such as collagen appears to depend on divaleNt cations. Mutations can cause the osteochondrodysplasias [[pseudoachondroplasia]] (PSACH) and [[multiple epiphyseal dysplasia]] (MED).<ref name="entrez" />
The [[protein]] encoded by this gene is a noncollagenous [[extracellular matrix]] (ECM) [[protein]].<ref name=pmid7325960>{{cite journal | vauthors = Paulsson M, Heinegård D | title = Purification and structural characterization of a cartilage matrix protein | journal = The Biochemical Journal | volume = 197 | issue = 2 | pages = 367–75 | date = Aug 1981 | pmid = 7325960 | pmc = 1163135 | doi=10.1042/bj1970367}}</ref> It consists of five identical [[glycoprotein]] subunits, each with [[EGF-like domain|EGF-like]] and calcium-binding ([[thrombospondin]]-like) domains. Oligomerization results from formation of a five-stranded [[coiled coil]] and [[disulfide bond]]s. Binding to other ECM proteins such as collagen appears to depend on divalent cations. Mutations can cause the osteochondrodysplasias [[pseudoachondroplasia]] (PSACH) and [[multiple epiphyseal dysplasia]] (MED).<ref name="entrez" />


COMP is a marker of cartilage turnover.<ref>{{cite journal | vauthors = Petersen SG, Saxne T, Heinegard D, Hansen M, Holm L, Koskinen S, Stordal C, Christensen H, Aagaard P, Kjaer M | title = Glucosamine but not ibuprofen alters cartilage turnover in osteoarthritis patients in response to physical training | journal = Osteoarthritis and Cartilage / OARS, Osteoarthritis Research Society | volume = 18 | issue = 1 | pages = 34–40 | date = Jan 2010 | pmid = 19679221 | doi = 10.1016/j.joca.2009.07.004 }}</ref> It is present in high quantities in [[Fibrosis|fibrotic scar]]s and [[systemic sclerosis]], and it appears to have a role in vascular wall remodeling.<ref>{{cite journal | vauthors = Halper J, Kjaer M | title = Basic components of connective tissues and extracellular matrix: elastin, fibrillin, fibulins, fibrinogen, fibronectin, laminin, tenascins and thrombospondins | journal = Advances in Experimental Medicine and Biology | volume = 802 | pages = 31–47 | date = 2014 | pmid = 24443019 | doi = 10.1007/978-94-007-7893-1_3 }}</ref>
COMP is a marker of cartilage turnover.<ref>{{cite journal | vauthors = Petersen SG, Saxne T, Heinegard D, Hansen M, Holm L, Koskinen S, Stordal C, Christensen H, Aagaard P, Kjaer M | title = Glucosamine but not ibuprofen alters cartilage turnover in osteoarthritis patients in response to physical training | journal = Osteoarthritis and Cartilage / OARS, Osteoarthritis Research Society | volume = 18 | issue = 1 | pages = 34–40 | date = Jan 2010 | pmid = 19679221 | doi = 10.1016/j.joca.2009.07.004 }}</ref> It is present in high quantities in [[Fibrosis|fibrotic scar]]s and [[systemic sclerosis]], and it appears to have a role in vascular wall remodeling.<ref>{{cite journal | vauthors = Halper J, Kjaer M | title = Basic components of connective tissues and extracellular matrix: elastin, fibrillin, fibulins, fibrinogen, fibronectin, laminin, tenascins and thrombospondins | journal = Advances in Experimental Medicine and Biology | volume = 802 | pages = 31–47 | date = 2014 | pmid = 24443019 | doi = 10.1007/978-94-007-7893-1_3 }}</ref>

Latest revision as of 17:45, 28 December 2017

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Identifiers
Aliases
External IDsGeneCards: [1]
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

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n/a

RefSeq (protein)

n/a

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Location (UCSC)n/an/a
PubMed searchn/an/a
Wikidata
View/Edit Human

Cartilage oligomeric matrix protein (COMP), also known as thrombospondin-5, is an extracellular matrix (ECM) protein primarily present in cartilage. In humans it is encoded by the COMP gene.[1][2][3]

Function

The protein encoded by this gene is a noncollagenous extracellular matrix (ECM) protein.[4] It consists of five identical glycoprotein subunits, each with EGF-like and calcium-binding (thrombospondin-like) domains. Oligomerization results from formation of a five-stranded coiled coil and disulfide bonds. Binding to other ECM proteins such as collagen appears to depend on divalent cations. Mutations can cause the osteochondrodysplasias pseudoachondroplasia (PSACH) and multiple epiphyseal dysplasia (MED).[3]

COMP is a marker of cartilage turnover.[5] It is present in high quantities in fibrotic scars and systemic sclerosis, and it appears to have a role in vascular wall remodeling.[6]

References

  1. Newton G, Weremowicz S, Morton CC, Copeland NG, Gilbert DJ, Jenkins NA, Lawler J (Dec 1994). "Characterization of human and mouse cartilage oligomeric matrix protein". Genomics. 24 (3): 435–9. doi:10.1006/geno.1994.1649. PMID 7713493.
  2. Briggs MD, Rasmussen IM, Weber JL, Yuen J, Reinker K, Garber AP, Rimoin DL, Cohn DH (Dec 1993). "Genetic linkage of mild pseudoachondroplasia (PSACH) to markers in the pericentromeric region of chromosome 19". Genomics. 18 (3): 656–60. doi:10.1016/S0888-7543(05)80369-6. PMID 8307576.
  3. 3.0 3.1 "Entrez Gene: COMP cartilage oligomeric matrix protein".
  4. Paulsson M, Heinegård D (Aug 1981). "Purification and structural characterization of a cartilage matrix protein". The Biochemical Journal. 197 (2): 367–75. doi:10.1042/bj1970367. PMC 1163135. PMID 7325960.
  5. Petersen SG, Saxne T, Heinegard D, Hansen M, Holm L, Koskinen S, Stordal C, Christensen H, Aagaard P, Kjaer M (Jan 2010). "Glucosamine but not ibuprofen alters cartilage turnover in osteoarthritis patients in response to physical training". Osteoarthritis and Cartilage / OARS, Osteoarthritis Research Society. 18 (1): 34–40. doi:10.1016/j.joca.2009.07.004. PMID 19679221.
  6. Halper J, Kjaer M (2014). "Basic components of connective tissues and extracellular matrix: elastin, fibrillin, fibulins, fibrinogen, fibronectin, laminin, tenascins and thrombospondins". Advances in Experimental Medicine and Biology. 802: 31–47. doi:10.1007/978-94-007-7893-1_3. PMID 24443019.

Further reading

External links