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UniProtKB/Swiss-Prot Q09428: Variant p.Val187Asp

ATP-binding cassette sub-family C member 8
Gene: ABCC8
Variant information

Variant position:  187
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 Valine (V) to Aspartate (D) at position 187 (V187D, p.Val187Asp).
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 (V) to medium size and acidic (D)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -3
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:  Familial hyperinsulinemic hypoglycemia 1 (HHF1) [MIM:256450]: Most common cause of persistent hypoglycemia in infancy. Unless early and aggressive intervention is undertaken, brain damage from recurrent episodes of hypoglycemia may occur. {ECO:0000269|PubMed:10202168, ECO:0000269|PubMed:10334322, ECO:0000269|PubMed:10615958, ECO:0000269|PubMed:11018078, ECO:0000269|PubMed:11226335, ECO:0000269|PubMed:11867634, ECO:0000269|PubMed:12364426, ECO:0000269|PubMed:12941782, ECO:0000269|PubMed:15562009, ECO:0000269|PubMed:15579781, ECO:0000269|PubMed:15807877, ECO:0000269|PubMed:16357843, ECO:0000269|PubMed:16429405, ECO:0000269|PubMed:24814349, ECO:0000269|PubMed:25720052, ECO:0000269|PubMed:8650576, ECO:0000269|PubMed:8751851, ECO:0000269|PubMed:8923011, ECO:0000269|PubMed:9618169, ECO:0000269|PubMed:9648840, ECO:0000269|PubMed:9769320}. 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 HHF1; severe; high prevalence in Finland; loss of channel activity.
Any additional useful information about the variant.

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

Sequence information

Variant position:  187
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  1581
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 – 1581 ATP-binding cassette sub-family C member 8
Transmembrane 168 – 194 Helical; Name=5
Alternative sequence 51 – 1581 Missing. In isoform 3.

Literature citations

A point mutation inactivating the sulfonylurea receptor causes the severe form of persistent hyperinsulinemic hypoglycemia of infancy in Finland.
Otonkoski T.; Aemmaelae C.; Huopio H.; Cote G.J.; Chapman J.; Cosgrove K.; Ashfield R.; Huang E.; Komulainen J.; Ashcroft F.M.; Dunne M.J.; Kere J.; Thomas P.M.;
Diabetes 48:408-415(1999)
Cited for: VARIANT HHF1 ASP-187;

Acute insulin response tests for the differential diagnosis of congenital hyperinsulinism.
Huopio H.; Jaeaeskelaeinen J.; Komulainen J.; Miettinen R.; Kaerkkaeinen P.; Laakso M.; Tapanainen P.; Voutilainen R.; Otonkoski T.;
J. Clin. Endocrinol. Metab. 87:4502-4507(2002)
Cited for: VARIANTS HHF1 ASP-187; THR-1457; LYS-1506; ASP-1550 AND VAL-1551;

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.