3o2x

Structural highlights

Disease

[MMP13_HUMAN] Defects in MMP13 are the cause of spondyloepimetaphyseal dysplasia Missouri type (SEMD-MO) [MIM:602111]. A bone disease characterized by moderate to severe metaphyseal changes, mild epiphyseal involvement, rhizomelic shortening of the lower limbs with bowing of the femora and/or tibiae, coxa vara, genu varum and pear-shaped vertebrae in childhood. Epimetaphyseal changes improve with age.^[1] Defects in MMP13 are the cause of metaphyseal anadysplasia type 1 (MANDP1) [MIM:602111]. Metaphyseal anadysplasia consists of an abnormal bone development characterized by severe skeletal changes that, in contrast with the progressive course of most other skeletal dysplasias, resolve spontaneously with age. Clinical characteristics are evident from the first months of life and include slight shortness of stature and a mild varus deformity of the legs. Patients attain a normal stature in adolescence and show improvement or complete resolution of varus deformity of the legs and rhizomelic micromelia.^[2]

Function

[MMP13_HUMAN] Degrades collagen type I. Does not act on gelatin or casein. Could have a role in tumoral process.

See Also

• Matrix metalloproteinase

References

1. ↑ Kennedy AM, Inada M, Krane SM, Christie PT, Harding B, Lopez-Otin C, Sanchez LM, Pannett AA, Dearlove A, Hartley C, Byrne MH, Reed AA, Nesbit MA, Whyte MP, Thakker RV. MMP13 mutation causes spondyloepimetaphyseal dysplasia, Missouri type (SEMD(MO). J Clin Invest. 2005 Oct;115(10):2832-42. PMID:16167086 doi:10.1172/JCI22900
2. ↑ Lausch E, Keppler R, Hilbert K, Cormier-Daire V, Nikkel S, Nishimura G, Unger S, Spranger J, Superti-Furga A, Zabel B. Mutations in MMP9 and MMP13 determine the mode of inheritance and the clinical spectrum of metaphyseal anadysplasia. Am J Hum Genet. 2009 Aug;85(2):168-78. doi: 10.1016/j.ajhg.2009.06.014. Epub 2009, Jul 16. PMID:19615667 doi:10.1016/j.ajhg.2009.06.014