{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,23]],"date-time":"2026-08-23T15:48:42Z","timestamp":1787500122986,"version":"build-2736575974"},"reference-count":33,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2006,11,7]],"date-time":"2006-11-07T00:00:00Z","timestamp":1162857600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Inher Metab Disea"],"published-print":{"date-parts":[[2006,12]]},"abstract":"<jats:title>Summary<\/jats:title>\n                  <jats:p>Mucopolysaccharidosis II (Hunter disease), a lysosomal storage disorder caused by a deficiency of iduronate\u20102\u2010sulfatase (IDS), has variable clinical phenotypes. Nearly 300 different mutations have been identified in the IDS gene from patients with Hunter disease, but the correlation between the genotype and phenotype has remained unclear. We studied the characteristics of 11 missense mutations, which were detected in the patients or artificially introduced, using stable expression experiments and structural analysis. The mutants found in the attenuated phenotype showed considerable residual activity (0.2\u20132.4% of the wild\u2010type IDS activity) and those in the severe phenotype had no activity. In immunoblot analysis, both the 73\u201375 kDa precursor and processed forms were detected in the expression of \u2018attenuated\u2019 mutants (R48P, A85T and W337R) and the artificial active site mutants (C84S, C84T). The 73\u201375 kDa initial precursor was detected in the \u2018severe\u2019 mutants (P86L, S333L, S349I, R468Q, R468L). The truncated 68 kDa precursor form was synthesized in the Q531X mutant. The results of immunoblotting indicated rapid degradation and\/or insufficiency in processing as a result of structural alteration of the IDS protein. A combination of analyses of genotype and molecular phenotypes, including enzyme activity, protein processing and structural analysis with an engineered reference protein, could provide an avenue to understanding the molecular mechanism of the disease and could give a useful tool for the evaluation of possible therapeutic chemical compounds.<\/jats:p>","DOI":"10.1007\/s10545-006-0440-7","type":"journal-article","created":{"date-parts":[[2006,11,7]],"date-time":"2006-11-07T06:59:33Z","timestamp":1162882773000},"page":"755-761","source":"Crossref","is-referenced-by-count":34,"title":["Effect of Hunter disease (mucopolysaccharidosis type II) mutations on molecular phenotypes of iduronate\u20102\u2010sulfatase: Enzymatic activity, protein processing and structural analysis"],"prefix":"10.1002","volume":"29","author":[{"given":"K.","family":"Sukegawa\u2010Hayasaka","sequence":"first","affiliation":[{"name":"Department of Pediatrics Gifu University Graduate School of Medicine Gifu 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