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UniProtKB/Swiss-Prot Q8TD43: Variant p.Gly844Asp

Transient receptor potential cation channel subfamily M member 4
Gene: TRPM4
Variant information

Variant position:  844
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 Glycine (G) to Aspartate (D) at position 844 (G844D, p.Gly844Asp).
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 glycine (G) to medium size and acidic (D)
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:  Progressive familial heart block 1B (PFHB1B) [MIM:604559]: A cardiac bundle branch disorder characterized by progressive alteration of cardiac conduction through the His-Purkinje system, with a pattern of a right bundle-branch block and/or left anterior hemiblock occurring individually or together. It leads to complete atrio-ventricular block causing syncope and sudden death. {ECO:0000269|PubMed:19726882, ECO:0000269|PubMed:20562447, ECO:0000269|PubMed:21887725}. 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 PFHB1B; right bundle-branch block.
Any additional useful information about the variant.

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

Sequence information

Variant position:  844
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  1214
The length of the canonical sequence.

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.




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.

Chain 1 – 1214 Transient receptor potential cation channel subfamily M member 4
Topological domain 836 – 863 Cytoplasmic
Metal binding 828 – 828 Calcium
Metal binding 831 – 831 Calcium
Alternative sequence 738 – 882 Missing. In isoform 3.

Literature citations

Gain-of-function mutations in TRPM4 cause autosomal dominant isolated cardiac conduction disease.
Liu H.; El Zein L.; Kruse M.; Guinamard R.; Beckmann A.; Bozio A.; Kurtbay G.; Megarbane A.; Ohmert I.; Blaysat G.; Villain E.; Pongs O.; Bouvagnet P.;
Circ. Cardiovasc. Genet. 3:374-385(2010)
Cited for: VARIANTS PFHB1B TRP-164; THR-432 AND ASP-844;

Mutational spectrum in the Ca(2+) -activated cation channel gene TRPM4 in patients with cardiac conductance disturbances.
Stallmeyer B.; Zumhagen S.; Denjoy I.; Duthoit G.; Hebert J.L.; Ferrer X.; Maugenre S.; Schmitz W.; Kirchhefer U.; Schulze-Bahr E.; Guicheney P.; Schulze-Bahr E.;
Hum. Mutat. 33:109-117(2012)
Cited for: VARIANTS PFHB1B HIS-131; ARG-293; THR-432; SER-582; HIS-790; ASP-844; ARG-914 AND SER-970; VARIANTS THR-101; CYS-103; HIS-252; LYS-487 DEL; ALA-561; ARG-854 AND LEU-1204;

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.