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UniProtKB/Swiss-Prot P41180: Variant p.Leu727Gln

Extracellular calcium-sensing receptor
Gene: CASR
Variant information

Variant position:  727
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 Leucine (L) to Glutamine (Q) at position 727 (L727Q, p.Leu727Gln).
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 (L) to medium size and polar (Q)
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 HYPOC1; increased G-protein coupled receptor signaling pathway; does not affect cell membrane localization.
Any additional useful information about the variant.

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



Sequence information

Variant position:  727
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  1078
The length of the canonical sequence.

Location on the sequence:   EAKIPTSFHRKWWGLNLQFL  L VFLCTFMQIVICVIWLYTAP
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                         EAKIPTSFHRKWWGLNLQFLLVFLCTFMQIVICVIWLYTAP

Mouse                         EAKIPTSFHRKWWGLNLQFLLVFLCTFMQIVICIIWLYTAP

Rat                           EAKIPTSFHRKWWGLNLQFLLVFLCTFMQILICIIWLYTAP

Pig                           EAKIPTSFHRKWWGLNLQFLLVFLCTFMQIVICAIWLYTAP

Bovine                        EAKIPTSFHRKWWGLNLQFLLVFLCTFMQIVICAIWLNTAP

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 20 – 1078 Extracellular calcium-sensing receptor
Transmembrane 725 – 745 Helical; Name=4
Helix 725 – 745


Literature citations

A hypocalcemic child with a novel activating mutation of the calcium-sensing receptor gene: successful treatment with recombinant human parathyroid hormone.
Mittelman S.D.; Hendy G.N.; Fefferman R.A.; Canaff L.; Mosesova I.; Cole D.E.; Burkett L.; Geffner M.E.;
J. Clin. Endocrinol. Metab. 91:2474-2479(2006)
Cited for: VARIANT HYPOC1 GLN-727; CHARACTERIZATION OF VARIANT HYPOC1 GLN-727;

CASR gene activating mutations in two families with autosomal dominant hypocalcemia.
Guarnieri V.; Valentina D'Elia A.; Baorda F.; Pazienza V.; Benegiamo G.; Stanziale P.; Copetti M.; Battista C.; Grimaldi F.; Damante G.; Pellegrini F.; D'Agruma L.; Zelante L.; Carella M.; Scillitani A.;
Mol. Genet. Metab. 107:548-552(2012)
Cited for: VARIANTS HYPOC1 LEU-221; ARG-681 AND GLN-727; FUNCTION; SUBCELLULAR LOCATION; CHARACTERIZATION OF VARIANTS HYPOC1 ARG-681 AND GLN-727;

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.