UniProtKB/Swiss-Prot Q13326: Variant p.Asn287Ser

Gamma-sarcoglycan
Gene: SGCG
Chromosomal location: 13q12
Variant information

Variant position:  287
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Polymorphism
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants have been found in patients and disease-association is reported in literature. However, this classification is not a definitive assessment of variant pathogenicity.
  • Polymorphism: No disease-association has been reported.
  • Unclassified: Variants have been found in patients but disease-association remains unclear.

Residue change:  From Asparagine (N) to Serine (S) at position 287 (N287S, p.Asn287Ser).
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 polar (N) to small size and polar (S)
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

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



Sequence information

Variant position:  287
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  291
The length of the canonical sequence.

Location on the sequence:   CPDGKLYLSVAGVSTTCQEH  N HICL
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                         CPDGKLYLSVAGVSTTCQEHNHICL

Mouse                         CPDGKLYLSMAGEVTTCEEHSHVCL

Bovine                        CPDGKLYLSVAGMGTTCHEHSHLCL

Dog                           CPDGKLYLSVAGVGTTCHEHSHICL

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 1 – 291 Gamma-sarcoglycan
Topological domain 59 – 291 Extracellular
Disulfide bond 265 – 290


Literature citations

Mutations in the dystrophin-associated protein gamma-sarcoglycan in chromosome 13 muscular dystrophy.
Noguchi S.; McNally E.M.; Othmane K.B.; Hagiwara Y.; Mizuno Y.; Yoshida M.; Yamamoto H.; Boennemann C.G.; Gussoni E.; Denton P.H.; Kyriakides T.; Middleton L.; Hentati F.; Hamida M.B.; Nonaka I.; Vance J.M.; Kunkel L.M.; Ozawa E.;
Science 270:819-822(1995)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; DISEASE; VARIANT SER-287;

Mild and severe muscular dystrophy caused by a single gamma-sarcoglycan mutation.
McNally E.M.; Passos-Bueno M.R.; Boennemann C.G.; Vainzof M.; de Sa Moreira E.; Lidov H.G.W.; Othmane K.B.; Denton P.H.; Vance J.M.; Zatz M.; Kunkel L.M.;
Am. J. Hum. Genet. 59:1040-1047(1996)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]; DISEASE; VARIANTS HIS-116 AND SER-287;

The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).
The MGC Project Team;
Genome Res. 14:2121-2127(2004)
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]; VARIANT SER-287;

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.