4mj2

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Crystal structure of apo-iduronidase in the R3 form

Structural highlights

4mj2 is a 2 chain structure with sequence from Homo sapiens. This structure supersedes the now removed PDB entry 4jxo. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:BMA, CL, GOL, MAN, NAG, SRT, TLA
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

IDUA_HUMAN Hurler-Scheie syndrome;Hurler syndrome;Scheie syndrome. Defects in IDUA are the cause of mucopolysaccharidosis type 1H (MPS1H) [MIM:607014; also known as Hurler syndrome. MPS1H is a severe form of mucopolysaccharidosis type 1, a rare lysosomal storage disease characterized by progressive physical deterioration with urinary excretion of dermatan sulfate and heparan sulfate. Patients with MPS1H usually present, within the first year of life, a combination of hepatosplenomegaly, skeletal deformities, corneal clouding and severe mental retardation. Obstructive airways disease, respiratory infection and cardiac complications usually result in death before 10 years of age.[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Defects in IDUA are the cause of mucopolysaccharidosis type 1H/S (MPS1H/S) [MIM:607015; also known as Hurler-Scheie syndrome. MPS1H/S is a form of mucopolysaccharidosis type 1, a rare lysosomal storage disease characterized by progressive physical deterioration with urinary excretion of dermatan sulfate and heparan sulfate. MPS1H/S represents an intermediate phenotype of the MPS1 clinical spectrum. It is characterized by relatively little neurological involvement, but most of the somatic symptoms described for severe MPS1 develop in the early to mid-teens, causing considerable loss of mobility. Defects in IDUA are the cause of mucopolysaccharidosis type 1S (MPS1S) [MIM:607016; also known as Scheie syndrome. MPS1S is a mild form of mucopolysaccharidosis type 1, a rare lysosomal storage disease characterized by progressive physical deterioration with urinary excretion of dermatan sulfate and heparan sulfate. Patients with MPS1S may have little or no neurological involvement, normal stature and life span, but present development of joints stiffness, mild hepatosplenomegaly, aortic valve disease and corneal clouding.

Function

IDUA_HUMAN

Publication Abstract from PubMed

Mucopolysaccharidosis type I (MPS I), caused by mutations in the gene encoding alpha-L-iduronidase (IDUA), is one of approximately 70 genetic disorders collectively known as the lysosomal storage diseases. To gain insight into the basis for MPS I, we crystallized human IDUA produced in an Arabidopsis thaliana cgl mutant. IDUA consists of a TIM barrel domain containing the catalytic site, a beta-sandwich domain and a fibronectin-like domain. Structures of IDUA bound to iduronate analogs illustrate the Michaelis complex and reveal a 2,5B conformation in the glycosyl-enzyme intermediate, which suggest a retaining double displacement reaction involving the nucleophilic Glu299 and the general acid/base Glu182. Unexpectedly, the N-glycan attached to Asn372 interacts with iduronate analogs in the active site and is required for enzymatic activity. Finally, these IDUA structures and biochemical analysis of the disease-relevant P533R mutation have enabled us to correlate the effects of mutations in IDUA to clinical phenotypes.

Insights into mucopolysaccharidosis I from the structure and action of alpha-L-iduronidase.,Bie H, Yin J, He X, Kermode AR, Goddard-Borger ED, Withers SG, James MN Nat Chem Biol. 2013 Sep 11. doi: 10.1038/nchembio.1357. PMID:24036510[14]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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References

  1. ↑ Clarke LA, Nelson PV, Warrington CL, Morris CP, Hopwood JJ, Scott HS. Mutation analysis of 19 North American mucopolysaccharidosis type I patients: identification of two additional frequent mutations. Hum Mutat. 1994;3(3):275-82. PMID:8019563 doi:http://dx.doi.org/10.1002/humu.1380030316
  2. ↑ Clarke LA, Scott HS. Two novel mutations causing mucopolysaccharidosis type I detected by single strand conformational analysis of the alpha-L-iduronidase gene. Hum Mol Genet. 1993 Aug;2(8):1311-2. PMID:8401515
  3. ↑ Bach G, Moskowitz SM, Tieu PT, Matynia A, Neufeld EF. Molecular analysis of Hurler syndrome in Druze and Muslim Arab patients in Israel: multiple allelic mutations of the IDUA gene in a small geographic area. Am J Hum Genet. 1993 Aug;53(2):330-8. PMID:8328452
  4. ↑ Scott HS, Litjens T, Nelson PV, Brooks DA, Hopwood JJ, Morris CP. alpha-L-iduronidase mutations (Q70X and P533R) associate with a severe Hurler phenotype. Hum Mutat. 1992;1(4):333-9. PMID:1301941 doi:http://dx.doi.org/10.1002/humu.1380010412
  5. ↑ Bunge S, Kleijer WJ, Steglich C, Beck M, Zuther C, Morris CP, Schwinger E, Hopwood JJ, Scott HS, Gal A. Mucopolysaccharidosis type I: identification of 8 novel mutations and determination of the frequency of the two common alpha-L-iduronidase mutations (W402X and Q70X) among European patients. Hum Mol Genet. 1994 Jun;3(6):861-6. PMID:7951228
  6. ↑ Tieu PT, Bach G, Matynia A, Hwang M, Neufeld EF. Four novel mutations underlying mild or intermediate forms of alpha-L-iduronidase deficiency (MPS IS and MPS IH/S). Hum Mutat. 1995;6(1):55-9. PMID:7550232 doi:http://dx.doi.org/10.1002/humu.1380060111
  7. ↑ Bunge S, Kleijer WJ, Steglich C, Beck M, Schwinger E, Gal A. Mucopolysaccharidosis type I: identification of 13 novel mutations of the alpha-L-iduronidase gene. Hum Mutat. 1995;6(1):91-4. PMID:7550242 doi:http://dx.doi.org/10.1002/humu.1380060119
  8. ↑ Scott HS, Anson DS, Orsborn AM, Nelson PV, Clements PR, Morris CP, Hopwood JJ. Human alpha-L-iduronidase: cDNA isolation and expression. Proc Natl Acad Sci U S A. 1991 Nov 1;88(21):9695-9. PMID:1946389
  9. ↑ Lee-Chen GJ, Lin SP, Tang YF, Chin YW. Mucopolysaccharidosis type I: characterization of novel mutations affecting alpha-L-iduronidase activity. Clin Genet. 1999 Jul;56(1):66-70. PMID:10466419
  10. ↑ Teng YN, Wang TR, Hwu WL, Lin SP, Lee-Chen GJ. Identification and characterization of -3c-g acceptor splice site mutation in human alpha-L-iduronidase associated with mucopolysaccharidosis type IH/S. Clin Genet. 2000 Feb;57(2):131-6. PMID:10735634
  11. ↑ Matte U, Yogalingam G, Brooks D, Leistner S, Schwartz I, Lima L, Norato DY, Brum JM, Beesley C, Winchester B, Giugliani R, Hopwood JJ. Identification and characterization of 13 new mutations in mucopolysaccharidosis type I patients. Mol Genet Metab. 2003 Jan;78(1):37-43. PMID:12559846
  12. ↑ Yogalingam G, Guo XH, Muller VJ, Brooks DA, Clements PR, Kakkis ED, Hopwood JJ. Identification and molecular characterization of alpha-L-iduronidase mutations present in mucopolysaccharidosis type I patients undergoing enzyme replacement therapy. Hum Mutat. 2004 Sep;24(3):199-207. PMID:15300847 doi:http://dx.doi.org/10.1002/humu.20081
  13. ↑ Bertola F, Filocamo M, Casati G, Mort M, Rosano C, Tylki-Szymanska A, Tuysuz B, Gabrielli O, Grossi S, Scarpa M, Parenti G, Antuzzi D, Dalmau J, Di Rocco M, Vici CD, Okur I, Rosell J, Rovelli A, Furlan F, Rigoldi M, Biondi A, Cooper DN, Parini R. IDUA mutational profiling of a cohort of 102 European patients with mucopolysaccharidosis type I: identification and characterization of 35 novel alpha-L-iduronidase (IDUA) alleles. Hum Mutat. 2011 Jun;32(6):E2189-210. doi: 10.1002/humu.21479. Epub 2011 Mar 10. PMID:21394825 doi:http://dx.doi.org/10.1002/humu.21479
  14. ↑ Bie H, Yin J, He X, Kermode AR, Goddard-Borger ED, Withers SG, James MN. Insights into mucopolysaccharidosis I from the structure and action of alpha-L-iduronidase. Nat Chem Biol. 2013 Sep 11. doi: 10.1038/nchembio.1357. PMID:24036510 doi:10.1038/nchembio.1357

Contents


PDB ID 4mj2

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