4aw6
From Proteopedia
Crystal structure of the human nuclear membrane zinc metalloprotease ZMPSTE24 (FACE1)
Structural highlights
Disease[FACE1_HUMAN] Mandibuloacral dysplasia with type B lipodystrophy;Hutchinson-Gilford progeria syndrome;Lethal restrictive dermopathy. Mandibuloacral dysplasia with type B lipodystrophy (MADB) [MIM:608612]: A disorder characterized by mandibular and clavicular hypoplasia, acroosteolysis, delayed closure of the cranial suture, joint contractures, and generalized lipodystrophy with loss of subcutaneous fat from the extremities, face, neck and trunk. Note=The disease is caused by mutations affecting the gene represented in this entry.[1] [2] [3] [4] Lethal tight skin contracture syndrome (LTSCS) [MIM:275210]: Rare disorder mainly characterized by intrauterine growth retardation, tight and rigid skin with erosions, prominent superficial vasculature and epidermal hyperkeratosis, facial features (small mouth, small pinched nose and micrognathia), sparse/absent eyelashes and eyebrows, mineralization defects of the skull, thin dysplastic clavicles, pulmonary hypoplasia, multiple joint contractures and an early neonatal lethal course. Liveborn children usually die within the first week of life. The overall prevalence of consanguineous cases suggested an autosomal recessive inheritance. Note=The disease is caused by mutations affecting the gene represented in this entry.[5] Function[FACE1_HUMAN] Proteolytically removes the C-terminal three residues of farnesylated proteins. Acts on lamin A/C. Publication Abstract from PubMedMutations in the nuclear membrane zinc metalloprotease ZMPSTE24 lead to diseases of lamin processing (laminopathies), such as the premature aging disease progeria and metabolic disorders. ZMPSTE24 processes prelamin A, a component of the nuclear lamina intermediate filaments, by cleaving it at two sites. Failure of this processing results in accumulation of farnesylated, membrane-associated prelamin A. The 3.4 angstrom crystal structure of human ZMPSTE24 has a seven transmembrane alpha-helical barrel structure, surrounding a large, water-filled, intramembrane chamber, capped by a zinc metalloprotease domain with the catalytic site facing into the chamber. The 3.8 angstrom structure of a complex with a CSIM tetrapeptide showed that the mode of binding of the substrate resembles that of an insect metalloprotease inhibitor in thermolysin. Laminopathy-associated mutations predicted to reduce ZMPSTE24 activity map to the zinc metalloprotease peptide-binding site and to the bottom of the chamber. The structural basis of ZMPSTE24-dependent laminopathies.,Quigley A, Dong YY, Pike AC, Dong L, Shrestha L, Berridge G, Stansfeld PJ, Sansom MS, Edwards AM, Bountra C, von Delft F, Bullock AN, Burgess-Brown NA, Carpenter EP Science. 2013 Mar 29;339(6127):1604-7. doi: 10.1126/science.1231513. PMID:23539603[6] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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Categories: Human | Large Structures | Ste24 endopeptidase | Arrowsmith, C H | Barr, A J | Berridge, G | Bountra, C | Bray, J E | Bullock, A | Burgess-Brown, N | Carpenter, E P | Chaikuad, A | Chalk, R | Cooper, C D.O | Delft, F von | Dong, L | Dong, Y Y | Edwards, A | Goubin, S | Li, Q | Mukhopadhyay, S | Pike, A C.W | Quigley, A | Shintre, C A | Shrestha, L | Xia, X | Yang, J | Ageing | Hydrolase | Integral membrane protein | M48 peptidase | Prelamin a processing | Progeria
