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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9BX84: Variant p.Ser141Leu

Transient receptor potential cation channel subfamily M member 6
Gene: TRPM6
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Variant information Variant position: help 141 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help 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: help From Serine (S) to Leucine (L) at position 141 (S141L, p.Ser141Leu). 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 small size and polar (S) to medium size and hydrophobic (L) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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: help In HOMG1; abolishes channel activity. Impairs homo- and heterooligomeric formation with TRPM7 resulting in intracellular retention. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 141 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 2022 The length of the canonical sequence.
Location on the sequence: help DHLLHLMLKEWKMELPKLVI S VHGGIQNFTMPSKFKEIFSQ 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: help The multiple alignment of the region surrounding the variant against various orthologous sequences. 
Human                         DHLLHLMLKEWKMELPKLVISVHGGIQNFTMPSKFKEIFSQ

Mouse                         DHLLHLMLKEWNMELPKLVISVHGGLQNFKISSKLKETFSQ
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 1 – 2022 Transient receptor potential cation channel subfamily M member 6
Topological domain 1 – 741 Cytoplasmic



Literature citations
Hypomagnesemia with secondary hypocalcemia is caused by mutations in TRPM6, a new member of the TRPM gene family.
Schlingmann K.P.; Weber S.; Peters M.; Niemann Nejsum L.N.; Vitzthum H.; Klingel K.; Kratz M.; Haddad E.; Ristoff E.; Dinour D.; Syrrou M.; Nielsen S.; Sassen M.C.; Waldegger S.; Seyberth H.W.; Konrad M.;
Nat. Genet. 31:166-170(2002)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM TRPM6A); VARIANT HOMG1 LEU-141; Disruption of TRPM6/TRPM7 complex formation by a mutation in the TRPM6 gene causes hypomagnesemia with secondary hypocalcemia.
Chubanov V.; Waldegger S.; Mederos y Schnitzler M.; Vitzthum H.; Sassen M.C.; Seyberth H.W.; Konrad M.; Gudermann T.;
Proc. Natl. Acad. Sci. U.S.A. 101:2894-2899(2004)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS TRPM6A; TRPM6B; TRPM6C; TRPM6T; M6-KINASE 1; M6-KINASE 2 AND M6-KINASE 3); CHARACTERIZATION OF VARIANT HOMG1 LEU-141; INTERACTION WITH TRPM7; SUBUNIT; Functional characterization of homo- and heteromeric channel kinases TRPM6 and TRPM7.
Li M.; Jiang J.; Yue L.;
J. Gen. Physiol. 127:525-537(2006)
Cited for: FUNCTION; TRANSPORTER ACTIVITY; ACTIVITY REGULATION; SUBUNIT; CHARACTERIZATION OF VARIANT HOMG1 LEU-141;
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.