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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P04062: Variant p.His490Arg

Lysosomal acid glucosylceramidase
Gene: GBA1
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Variant information Variant position: help 490 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help US 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: help From Histidine (H) to Arginine (R) at position 490 (H490R, p.His490Arg). 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: help Change from medium size and polar (H) to large size and basic (R) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 0 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: help In GD1; associated in cis with D-460; uncertain significance; no effect on glucosylceramidase activity. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 490 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 536 The length of the canonical sequence.
Location on the sequence: help SQRVGLVASQKNDLDAVALM H PDGSAVVVVLNRSSKDVPLT 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.
Sequence annotation in neighborhood: help 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 40 – 536 Lysosomal acid glucosylceramidase
Glycosylation 501 – 501 N-linked (GlcNAc...) asparagine
Alternative sequence 425 – 536 Missing. In isoform 3.
Mutagenesis 482 – 482 D -> E. Loss of glucosylceramidase activity.
Mutagenesis 482 – 482 D -> G. Decreased glucosylceramidase activity.
Mutagenesis 482 – 482 D -> S. Severe decrease of glucosylceramidase activity.
Mutagenesis 501 – 501 N -> D. Loss of glucosylceramidase activity.
Mutagenesis 501 – 501 N -> Q. Loss of glucosylceramidase activity.



Literature citations
Analysis of the glucocerebrosidase gene and mutation profile in 144 Italian Gaucher patients.
Filocamo M.; Mazzotti R.; Stroppiano M.; Seri M.; Giona F.; Parenti G.; Regis S.; Corsolini F.; Zoboli S.; Gatti R.;
Hum. Mutat. 20:234-235(2002)
Cited for: VARIANTS GD1 THR-198; CYS-209; PRO-209; ARG-241; ILE-252; CYS-324; HIS-324; CYS-351; ASN-438; HIS-448; CYS-457; PRO-485 AND ARG-490; VARIANTS GD2 CYS-170; PRO-235; ARG-241; ARG-270 AND ILE-400; VARIANTS GD3 LEU-146; SER-227; ARG-241; ILE-252; CYS-324; GLY-392 AND HIS-448; Identification and functional characterization of five novel mutant alleles in 58 Italian patients with Gaucher disease type 1.
Miocic S.; Filocamo M.; Dominissini S.; Montalvo A.L.; Vlahovicek K.; Deganuto M.; Mazzotti R.; Cariati R.; Bembi B.; Pittis M.G.;
Hum. Mutat. 25:100-100(2005)
Cited for: VARIANTS GD1 ASN-63; SER-158; TRP-159; CYS-170; LEU-221; GLU-230; ARG-241; CYS-324; SER-409; ASN-438; LEU-440; HIS-448; CYS-457; ASP-460; PRO-483 AND ARG-490; CHARACTERIZATION OF VARIANTS GD1 ASN-63; SER-158; LEU-221; GLU-230; ASP-460 AND ARG-490;
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.