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UniProtKB/Swiss-Prot Q01968: Variant p.Gln277Arg

Inositol polyphosphate 5-phosphatase OCRL
Gene: OCRL
Variant information

Variant position:  277
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Disease [Disclaimer]
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants implicated in disease according to literature reports.
  • Polymorphism: Variants not reported to be implicated in disease.
  • Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:  From Glutamine (Q) to Arginine (R) at position 277 (Q277R, p.Gln277Arg).
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 polar (Q) to large size and basic (R)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  1
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

Involvement in disease:  Lowe oculocerebrorenal syndrome (OCRL) [MIM:309000]: X-linked multisystem disorder affecting eyes, nervous system, and kidney. It is characterized by hydrophthalmia, cataract, mental retardation, vitamin D-resistant rickets, aminoaciduria, and reduced ammonia production by the kidney. Ocular abnormalities include cataract, glaucoma, microphthalmos, and decreased visual acuity. Developmental delay, hypotonia, behavior abnormalities, and areflexia are also present. Renal tubular involvement is characterized by impaired reabsorption of bicarbonate, amino acids, and phosphate. Musculoskeletal abnormalities such as joint hypermobility, dislocated hips, and fractures may develop as consequences of renal tubular acidosis and hypophosphatemia. Cataract is the only significant manifestation in carriers and is detected by slit-lamp examination. {ECO:0000269|PubMed:10767176, ECO:0000269|PubMed:10923037, ECO:0000269|PubMed:19168822, ECO:0000269|PubMed:20133602, ECO:0000269|PubMed:21031565, ECO:0000269|PubMed:21233288, ECO:0000269|PubMed:9199559, ECO:0000269|PubMed:9632163, ECO:0000269|PubMed:9682219, ECO:0000269|PubMed:9788721}. Note=The disease is caused by mutations affecting the gene represented in this entry.
The name and a short description of the disease associated with the variant. For more information about the disease, the user can refer to OMIM, following the link provided after the disease acronym.

Variant description:  In OCRL.
Any additional useful information about the variant.

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



Sequence information

Variant position:  277
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  901
The length of the canonical sequence.

Location on the sequence:   GLEPWLNCDPNPPDIYCIGF  Q ELDLSTEAFFYFESVKEQEW
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                         GLEPWLNCDPNPPDIYCIGFQELDLSTEAFFYFESVKEQEW

Mouse                         SLEPWLDCDPNPPDIYCIGFQELDLSTEAFFYFESVKEQEW

Rat                           SLEPWLNCDPNPPDIYCIGFQELDLSTEAFFYFESVKEQEW

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 1 – 901 Inositol polyphosphate 5-phosphatase OCRL
Region 237 – 563 5-phosphatase
Beta strand 270 – 277


Literature citations

From Lowe syndrome to Dent disease: correlations between mutations of the OCRL1 gene and clinical and biochemical phenotypes.
Hichri H.; Rendu J.; Monnier N.; Coutton C.; Dorseuil O.; Poussou R.V.; Baujat G.; Blanchard A.; Nobili F.; Ranchin B.; Remesy M.; Salomon R.; Satre V.; Lunardi J.;
Hum. Mutat. 32:379-388(2011)
Cited for: VARIANTS OCRL SER-242; THR-274; ARG-277; CYS-318; CYS-337; ILE-361; GLY-372; TYR-373; PHE-374; ARG-414; ASN-451; GLY-457; LYS-468; GLY-468; LEU-495; HIS-499; ARG-503; LYS-591; VAL-742 DEL; PRO-797; LEU-801 AND ARG-891; VARIANTS DD2 HIS-354 AND LEU-799;

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.