Defective GNS does not hydrolyse 6-sulfate from GlcNAc6S

Stable Identifier
R-HSA-2263495
Type
Reaction [transition]
Species
Homo sapiens
Compartment
lysosomal lumen
Synonyms
Defective GNS does not hydrolyse 6-sulfate from N-acetylglucosamine 6-sulfate of KS
ReviewStatus
5/5
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Defective GNS does not hydrolyse 6-sulfate from GlcNAc6S
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Due to the rarity of this disease, only approximately 20 mutations had been described. Recently a study by Valstar et al. revealed 15 of those mutations (Valstar et al. 2010). The group also conducted a literature survey of MPS IIID (MIM:252940). Mutations include R355X (Mok et al. 2003), Q390X (Jansen et al. 2007), Q272X (Beesley et al. 2007) and S94I (Valstar et al. 2010). Other mutations are not detailed here but can be referenced in the Valstar et al. review (Valstar et al. 2010).
Literature References
PubMed ID Title Journal Year
16990043 Identification and characterisation of an 8.7 kb deletion and a novel nonsense mutation in two Italian families with Sanfilippo syndrome type D (mucopolysaccharidosis IIID)

Beesley, CE, Concolino, D, Filocamo, M, Winchester, BG, Strisciuglio, P

Mol Genet Metab 2007
20232353 Mucopolysaccharidosis type IIID: 12 new patients and 15 novel mutations

Valstar, MJ, Bertoli-Avella, AM, Wessels, MW, Ruijter, GJ, de Graaf, B, Olmer, R, Elfferich, P, Neijs, S, Kariminejad, R, Suheyl Ezgü, F, Tokatli, A, Czartoryska, B, Bosschaart, AN, van den Bos-Terpstra, F, Puissant, H, Bürger, F, Omran, H, Eckert, D, Filocamo, M, Simeonov, E, Willems, PJ, Wevers, RA, Niermeijer, MF, Halley, DJ, Poorthuis, BJ, van Diggelen, OP

Hum Mutat 2010
17998446 Sanfilippo syndrome type D: natural history and identification of 3 novel mutations in the GNS Gene

Jansen, AC, Cao, H, Kaplan, P, Silver, K, Leonard, G, De Meirleir, L, Lissens, W, Liebaers, I, Veilleux, M, Andermann, F, Hegele, RA, Andermann, E

Arch Neurol 2007
12573255 Genomic basis of mucopolysaccharidosis type IIID (MIM 252940) revealed by sequencing of GNS encoding N-acetylglucosamine-6-sulfatase

Mok, A, Cao, H, Hegele, RA

Genomics 2003
Participants
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Catalyst Activity

N-acetylglucosamine-6-sulfatase activity of GNS mutants [lysosomal lumen]

Physical Entity
GNS mutants [lysosomal lumen] (Homo sapiens)
Activity
N-acetylglucosamine-6-sulfatase activity (GO:0008449)
Normal reaction
GNS:Ca2+ cleaves sulfate from GlcNAc-6-sulfate units of keratan sulfate (Homo sapiens)
Functional status

Loss of function of GNS mutants [lysosomal lumen]

Normal Entity
Disease Entity
Status
Disease
Name Identifier Synonyms
mucopolysaccharidosis III DOID:12801 Sanfilippo's syndrome, SANFILIPPO SYNDROME B, N-sulphoglucosamine sulphohydrolase deficiency, Sanfilippo's syndrome, mucopolysaccharidosis type IIIB, NAGLU DEFICIENCY, mucopolysaccharidosis type IIIA, Mucopolysaccharidosis, MPS-III, Mucopolysaccharidosis, MPS-III-B (disorder), mucopolysaccharidosis III, SANFILIPPO SYNDROME A, N-ACETYL-ALPHA-D-GLUCOSAMINIDASE DEFICIENCY, HEPARAN SULFATE SULFATASE DEFICIENCY, mucopolysaccharidosis type III
Cross References
Mondo
Authored
Jassal, B  (2012-05-21)
Reviewed
Coutinho, MF  (2012-08-27)
Alves, S  (2012-08-27)
Matos, L  (2012-08-27)
Created
Jassal, B  (2012-05-21)
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