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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9Y223: Variant p.Ile472Thr

Bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase
Gene: GNE
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Variant information Variant position: help 472 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 Isoleucine (I) to Threonine (T) at position 472 (I472T, p.Ile472Thr). 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 medium size and hydrophobic (I) to medium size and polar (T) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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
Variant description: help In NM; decreased UDP-N-acetylglucosamine 2-epimerase activity; decreased N-acylmannosamine kinase activity corresponding to less than 10% of wild-type activity. Any additional useful information about the variant.


Sequence information Variant position: help 472 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 722 The length of the canonical sequence.
Location on the sequence: help MCVEAAAEAVKLNCRILGVG I STGGRVNPREGIVLHSTKLI 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                         MCVEAAAEAVKLNCRILGVGISTGGRVNPREGIVLHSTKLI

Mouse                         MCVEAAAEAVKLNCRILGVGISTGGRVNPQEGVVLHSTKLI

Rat                           MCVEAAAEAVKLNCRILGVGISTGGRVNPQEGVVLHSTKLI
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 – 722 Bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase
Region 406 – 722 N-acetylmannosamine kinase
Binding site 476 – 476
Binding site 476 – 476
Binding site 477 – 477
Binding site 477 – 477
Binding site 489 – 489
Binding site 489 – 489
Alternative sequence 471 – 544 Missing. In isoform 4.
Beta strand 465 – 479



Literature citations
Distal myopathy with rimmed vacuoles is allelic to hereditary inclusion body myopathy.
Nishino I.; Noguchi S.; Murayama K.; Driss A.; Sugie K.; Oya Y.; Nagata T.; Chida K.; Takahashi T.; Takusa Y.; Ohi T.; Nishimiya J.; Sunohara N.; Ciafaloni E.; Kawai M.; Aoki M.; Nonaka I.;
Neurology 59:1689-1693(2002)
Cited for: VARIANTS NM GLN-132; VAL-176; CYS-177; GLN-306; ALA-331; TYR-378; THR-472; LEU-572; THR-630 AND VAL-631; GNE mutations causing distal myopathy with rimmed vacuoles with inflammation.
Yabe I.; Higashi T.; Kikuchi S.; Sasaki H.; Fukazawa T.; Yoshida K.; Tashiro K.;
Neurology 61:384-386(2003)
Cited for: VARIANTS NM THR-472 AND LEU-572; Reduction of UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase activity and sialylation in distal myopathy with rimmed vacuoles.
Noguchi S.; Keira Y.; Murayama K.; Ogawa M.; Fujita M.; Kawahara G.; Oya Y.; Imazawa M.; Goto Y.; Hayashi Y.K.; Nonaka I.; Nishino I.;
J. Biol. Chem. 279:11402-11407(2004)
Cited for: VARIANTS NM SER-13; VAL-176; VAL-524; LEU-572 AND SER-708; CHARACTERIZATION OF VARIANTS NM SER-13; GLN-132; VAL-176; CYS-177; ALA-331; TYR-378; THR-472; VAL-524; LEU-572; THR-630; VAL-631 AND SER-708; FUNCTION; CATALYTIC ACTIVITY; PATHWAY;
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.