Home  |  Contact

UniProtKB/Swiss-Prot P11217: Variant p.Asn685Tyr

Glycogen phosphorylase, muscle form
Gene: PYGM
Variant information

Variant position:  685
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  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:  From Asparagine (N) to Tyrosine (Y) at position 685 (N685Y, p.Asn685Tyr).
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 large size and aromatic (Y)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -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:  In GSD5.
Any additional useful information about the variant.



Sequence information

Variant position:  685
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  842
The length of the canonical sequence.

Location on the sequence:   EQISTAGTEASGTGNMKFML  N GALTIGTMDGANVEMAEEAG
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                         EQISTAGTEASGTGNMKFMLNGALTIGTMDGANVEMAEEAG

Mouse                         EQISTAGTEASGTGNMKFMLNGALTIGTMDGANVEMAEEAG

Rat                           EQISTAGTEASGTGNMKFMLNGALTIGTMDGANVEMAEEAG

Bovine                        EQISTAGTEASGTGNMKFMLNGALTIGTMDGANVEMAEEAG

Rabbit                        EQISTAGTEASGTGNMKFMLNGALTIGTMDGANVEMAEEAG

Sheep                         EQISTAGTEASGTGNMKFMLNGALTIGTMDGANVEMAEEAG

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 2 – 842 Glycogen phosphorylase, muscle form
Modified residue 681 – 681 N6-(pyridoxal phosphate)lysine
Turn 683 – 686


Literature citations

A new mutation in the myophosphorylase gene (Asn684Tyr) in a Spanish patient with McArdle's disease.
Andreu A.L.; Bruno C.; Tamburino L.; Gamez J.; Shanske S.; Cervera C.; Navarro C.; DiMauro S.;
Neuromuscul. Disord. 9:171-173(1999)
Cited for: VARIANTS GSD5 SER-205 AND TYR-685;

Molecular heterogeneity of myophosphorylase deficiency (McArdle's disease): a genotype-phenotype correlation study.
Martin M.A.; Rubio J.C.; Buchbinder J.; Fernandez-Hojas R.; del Hoyo P.; Teijeira S.; Gamez J.; Navarro C.; Fernandez J.M.; Cabello A.; Campos Y.; Cervera C.; Culebras J.M.; Andreu A.L.; Fletterick R.J.; Arenas J.;
Ann. Neurol. 50:574-581(2001)
Cited for: VARIANTS GSD5 PRO-116; TRP-194; SER-205; LYS-349; ASN-488; TRP-602; ASP-660; TYR-685; VAL-704 AND ARG-798;

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.