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UniProtKB/Swiss-Prot P35475: Variant p.Pro533Arg

Alpha-L-iduronidase
Gene: IDUA
Variant information

Variant position:  533
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  LP/P [Disclaimer]
The variants are classified into three categories: LP/P, LB/B and US.
  • LP/P: likely pathogenic or pathogenic.
  • LB/B: likely benign or benign.
  • US: uncertain significance

Residue change:  From Proline (P) to Arginine (R) at position 533 (P533R, p.Pro533Arg).
Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.

Physico-chemical properties:  Change from medium size and hydrophobic (P) to large size and basic (R)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -2
The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:
  • Lowest score: -4 (low probability of substitution).
  • Highest score: 11 (high probability of substitution).
More information can be found on the following page

Variant description:  In MPS1H and MPS1H/S; in 3% of the MPS1H patients; reduces catalytic activity and protein stability.
Any additional useful information about the variant.

Other resources:  
Links to websites of interest for the variant.



Sequence information

Variant position:  533
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  653
The length of the canonical sequence.

Location on the sequence:   AAPRPLPAGGRLTLRPALRL  P SLLLVHVCARPEKPPGQVTR
The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.

Residue conservation: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         AAPRPLPAGGRLTLRPALRLPSLLLVHVCARPEKPPGQVTR

                              EAPRPFPASGRLTLSVELRLPSLLLLHVCARPEKPPGPVTR

Mouse                         EAPRPFPARGRLTLHRKLPVPSLLLVHVCTRPLKPPGQVSR

Sequence annotation in neighborhood:  
The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
  • Type: the type of sequence feature.
  • Positions: endpoints of the sequence feature.
  • Description: contains additional information about the feature.

TypePositionsDescription
Chain 28 – 653 Alpha-L-iduronidase
Beta strand 529 – 541


Literature citations

Insights into mucopolysaccharidosis I from the structure and action of alpha-L-iduronidase.
Bie H.; Yin J.; He X.; Kermode A.R.; Goddard-Borger E.D.; Withers S.G.; James M.N.;
Nat. Chem. Biol. 9:739-745(2013)
Cited for: X-RAY CRYSTALLOGRAPHY (2.1 ANGSTROMS) OF 27-653 IN COMPLEX WITH IDURONATE ANALOGS; CATALYTIC ACTIVITY; ACTIVE SITE; CHARACTERIZATION OF VARIANT MPS1H ARG-533; DISULFIDE BOND; GLYCOSYLATION AT ASN-110; ASN-372 AND ASN-415;

Alpha-L-iduronidase mutations (Q70X and P533R) associate with a severe Hurler phenotype.
Scott H.S.; Litjens T.; Nelson P.V.; Brooks D.A.; Hopwood J.J.; Morris C.P.;
Hum. Mutat. 1:333-339(1992)
Cited for: VARIANT MPS1H ARG-533;

Identification and characterization of 13 new mutations in mucopolysaccharidosis type I patients.
Matte U.; Yogalingam G.; Brooks D.; Leistner S.; Schwartz I.; Lima L.; Norato D.Y.; Brum J.M.; Beesley C.; Winchester B.; Giugliani R.; Hopwood J.J.;
Mol. Genet. Metab. 78:37-43(2003)
Cited for: VARIANTS MPS1H ILE-133; LYS-182; ASP-208; TYR-349 AND ARG-533; VARIANTS MPS1H/S PHE-260; PRO-327; ARG-380 AND PRO-628; VARIANTS MPS1S GLN-89; ILE-350; HIS-383 AND ASP-445 DEL;

Identification and molecular characterization of alpha-L-iduronidase mutations present in mucopolysaccharidosis type I patients undergoing enzyme replacement therapy.
Yogalingam G.; Guo X.H.; Muller V.J.; Brooks D.A.; Clements P.R.; Kakkis E.D.; Hopwood J.J.;
Hum. Mutat. 24:199-207(2004)
Cited for: VARIANTS MPS1H/S VAL-79; GLN-238; PRO-327; CYS-363; ARG-380; ARG-533 AND ILE-602; VARIANT MPS1S ARG-423; VARIANTS GLN-82; GLN-105; THR-361 AND ILE-454; CHARACTERIZATION OF VARIANTS MPS1H/S VAL-79; GLN-238; CYS-363 AND ILE-602; CHARACTERIZATION OF VARIANT MPS1S ARG-423; CHARACTERIZATION OF VARIANT GLN-82;

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.
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 C.D.; Okur I.; Rosell J.; Rovelli A.; Furlan F.; Rigoldi M.; Biondi A.; Cooper D.N.; Parini R.;
Hum. Mutat. 32:E2189-E2210(2011)
Cited for: VARIANTS MPS1H/S ARG-84; LYS-178; LEU-188; ARG-265; LYS-276; PRO-396; ARG-423; PRO-436; ARG-496; ARG-533 AND PHE-535; VARIANTS MPS1H ASP-51; PRO-103; PRO-327 AND ARG-385; VARIANTS MPS1S CYS-76; TRP-89; GLU-219; LYS-276; LEU-306; LYS-348; PRO-490 AND PRO-492; VARIANTS GLN-33; GLN-105; THR-361; ASN-449; ILE-454 AND THR-591;

Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.