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UniProtKB/Swiss-Prot Q9Y653: Variant p.Arg38Gln

Adhesion G-protein coupled receptor G1
Gene: ADGRG1
Chromosomal location: 16q13
Variant information

Variant position:  38
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 Arginine (R) to Glutamine (Q) at position 38 (R38Q, p.Arg38Gln).
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 large size and basic (R) to medium size and polar (Q)
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:  Polymicrogyria, bilateral frontoparietal (BFPP) [MIM:606854]: A malformation of the cortex in which the brain surface is irregular and characterized by an excessive number of small gyri with abnormal lamination, most severe in the frontoparietal regions. BFPP clinical manifestations include developmental and psychomotor delay, cerebellar and pyramidal signs, truncal ataxia, seizures, hyperreflexia. Polymicrogyria is a heterogeneous disorder, considered to be the result of postmigratory abnormal cortical organization. {ECO:0000269|PubMed:15044805, ECO:0000269|PubMed:16240336, ECO:0000269|PubMed:21349848, ECO:0000269|PubMed:21723461, ECO:0000269|PubMed:22238662, ECO:0000269|PubMed:24949629}. 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 BFPP; abolishes interaction with COL3A1.
Any additional useful information about the variant.

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

Sequence information

Variant position:  38
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  693
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 26 – 693 Adhesion G-protein coupled receptor G1
Chain 26 – 382 ADGRG1 N-terminal fragment
Topological domain 26 – 402 Extracellular
Glycosylation 39 – 39 N-linked (GlcNAc...) asparagine
Alternative sequence 1 – 175 Missing. In isoform 5.
Alternative sequence 21 – 21 Q -> QASASS. In isoform 3.
Alternative sequence 38 – 207 Missing. In isoform 4.
Mutagenesis 28 – 28 H -> A. Abolishes heparin-binding; when associated with A-29 and A-33.
Mutagenesis 29 – 29 R -> A. Abolishes heparin-binding; when associated with A-28 and A-33.
Mutagenesis 33 – 33 R -> A. Reduces heparin-binding. Abolishes heparin-binding; when associated with A-28 and A-29.

Literature citations

Disease-associated mutations prevent GPR56-collagen III interaction.
Luo R.; Jin Z.; Deng Y.; Strokes N.; Piao X.;
PLoS ONE 7:E29818-E29818(2012)

Genotype-phenotype analysis of human frontoparietal polymicrogyria syndromes.
Piao X.; Chang B.S.; Bodell A.; Woods K.; Benzeev B.; Topcu M.; Guerrini R.; Goldberg-Stern H.; Sztriha L.; Dobyns W.B.; Barkovich A.J.; Walsh C.A.;
Ann. Neurol. 58:680-687(2005)
Cited for: VARIANTS BFPP GLN-38; TRP-38; SER-349; TRP-565 AND ARG-640;

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.