Collagen alpha-1(X) chain is a protein that in humans is a member of the collagen family encoded by the COL10A1gene.[1][2]
This gene encodes the alpha chain of type X collagen, a short chain collagen expressed by hypertrophic chondrocytes during endochondral ossification. Unlike type VIII collagen, the other short chain collagen, type X collagen is a homotrimer. Type X collagen has a short triple helical collagen domain flanked by the N-terminal NC2 and the C-terminal NC1 domains. The C-terminal NC1 domain has complement C1q-like structure. Collagen X forms hexamer complexes through the association of NC1 regions[3]. Mutations in this gene are associated with Schmid type metaphyseal chondrodysplasia (SMCD) and Japanese type spondylometaphyseal dysplasia (SMD).[2]
Recent studies into the early detection of colon cancer have identified COL10A1 protein levels in serum as a potential diagnostic biomarker candidate to detect both adenoma lesions and tumor.[5]
Collagen alpha-1(X) undergoes degradation in the active growth plate releasing an intact NC1 region with a small amount of collagenous region attached. This degradation byproduct has been deemed CXM and has potential to be a useful biomarker to assess real time growth velocity in children and fracture healing in adults [6].
References
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Kuivaniemi H, Tromp G, Prockop DJ (1997). "Mutations in fibrillar collagens (types I, II, III, and XI), fibril-associated collagen (type IX), and network-forming collagen (type X) cause a spectrum of diseases of bone, cartilage, and blood vessels". Hum. Mutat. 9 (4): 300–15. doi:10.1002/(SICI)1098-1004(1997)9:4<300::AID-HUMU2>3.0.CO;2-9. PMID9101290.
Kirsch T, Pfäffle M (1992). "Selective binding of anchorin CII (annexin V) to type II and X collagen and to chondrocalcin (C-propeptide of type II collagen). Implications for anchoring function between matrix vesicles and matrix proteins". FEBS Lett. 310 (2): 143–7. doi:10.1016/0014-5793(92)81316-E. PMID1397263.
Reichenberger E, Beier F, LuValle P, et al. (1992). "Genomic organization and full-length cDNA sequence of human collagen X.". FEBS Lett. 311 (3): 305–10. doi:10.1016/0014-5793(92)81126-7. PMID1397333.
Apte SS, Seldin MF, Hayashi M, Olsen BR (1992). "Cloning of the human and mouse type X collagen genes and mapping of the mouse type X collagen gene to chromosome 10". Eur. J. Biochem. 206 (1): 217–24. doi:10.1111/j.1432-1033.1992.tb16919.x. PMID1587271.
Reichenberger E, Aigner T, von der Mark K, et al. (1992). "In situ hybridization studies on the expression of type X collagen in fetal human cartilage". Dev. Biol. 148 (2): 562–72. doi:10.1016/0012-1606(91)90274-7. PMID1743401.
Bonaventure J, Chaminade F, Maroteaux P (1995). "Mutations in three subdomains of the carboxy-terminal region of collagen type X account for most of the Schmid metaphyseal dysplasias". Hum. Genet. 96 (1): 58–64. doi:10.1007/BF00214187. PMID7607655.
McIntosh I, Abbott MH, Francomano CA (1995). "Concentration of mutations causing Schmid metaphyseal chondrodysplasia in the C-terminal noncollagenous domain of type X collagen". Hum. Mutat. 5 (2): 121–5. doi:10.1002/humu.1380050204. PMID7749409.
Chan D, Cole WG, Rogers JG, Bateman JF (1995). "Type X collagen multimer assembly in vitro is prevented by a Gly618 to Val mutation in the alpha 1(X) NC1 domain resulting in Schmid metaphyseal chondrodysplasia". J. Biol. Chem. 270 (9): 4558–62. doi:10.1074/jbc.270.9.4558. PMID7876225.
McIntosh I, Abbott MH, Warman ML, et al. (1994). "Additional mutations of type X collagen confirm COL10A1 as the Schmid metaphyseal chondrodysplasia locus". Hum. Mol. Genet. 3 (2): 303–7. doi:10.1093/hmg/3.2.303. PMID8004099.
Dharmavaram RM, Elberson MA, Peng M, et al. (1994). "Identification of a mutation in type X collagen in a family with Schmid metaphyseal chondrodysplasia". Hum. Mol. Genet. 3 (3): 507–9. doi:10.1093/hmg/3.3.507. PMID8012364.
Warman ML, Abbott M, Apte SS, et al. (1993). "A type X collagen mutation causes Schmid metaphyseal chondrodysplasia". Nat. Genet. 5 (1): 79–82. doi:10.1038/ng0993-79. PMID8220429.
Pokharel RK, Alimsardjono H, Uno K, et al. (1996). "A novel mutation substituting tryptophan with arginine in the carboxyl-terminal, non-collagenous domain of collagen X in a case of Schmid metaphyseal chondrodysplasia". Biochem. Biophys. Res. Commun. 217 (3): 1157–62. doi:10.1006/bbrc.1995.2890. PMID8554571.
Stratakis CA, Orban Z, Burns AL, et al. (1997). "Dideoxyfingerprinting (ddF) analysis of the type X collagen gene (COL10A1) and identification of a novel mutation (S671P) in a kindred with Schmid metaphyseal chondrodysplasia". Biochem. Mol. Med. 59 (2): 112–7. doi:10.1006/bmme.1996.0075. PMID8986632.
Beier F, Eerola I, Vuorio E, et al. (1997). "Variability in the upstream promoter and intron sequences of the human, mouse and chick type X collagen genes". Matrix Biol. 15 (6): 415–22. doi:10.1016/S0945-053X(96)90160-2. PMID9049979.
Ikegawa S, Nakamura K, Nagano A, et al. (1997). "Mutations in the N-terminal globular domain of the type X collagen gene (COL10A1) in patients with Schmid metaphyseal chondrodysplasia". Hum. Mutat. 9 (2): 131–5. doi:10.1002/(SICI)1098-1004(1997)9:2<131::AID-HUMU5>3.0.CO;2-C. PMID9067753.