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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q96F25: Variant p.Asp74Asn

UDP-N-acetylglucosamine transferase subunit ALG14
Gene: ALG14
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Variant information Variant position: help 74 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 Aspartate (D) to Asparagine (N) at position 74 (D74N, p.Asp74Asn). 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 acidic (D) to medium size and polar (N) 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 MEPCA; decreased function in dolichol-linked oligosaccharide biosynthetic process. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 74 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 216 The length of the canonical sequence.
Location on the sequence: help RLLGSLSNAYSPRHYVIADT D EMSANKINSFELDRADRDPS 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                         RLLGSLSNA-YSPRHYVIADTDEMSANKINSF-ELDRADRDPS

Mouse                         RLVGSLSNA-YSPRHYVIAESDEMSAKKIHSLEELSRAQND

Rat                           RLVGSLSGA-YSPRHYVIAESDEMSAKKIHSL-ELARAQND

Baker's yeast                 RLLENYQDLLLGKSIVYLGYSDEASRQRFAHF--------I

Fission yeast                 NLLNALDDKLYSVRSYVAGSDDTMSVSKASLL--------S
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 – 216 UDP-N-acetylglucosamine transferase subunit ALG14
Topological domain 25 – 216 Cytoplasmic



Literature citations
An in vitro assay for enzymatic studies on human ALG13/14 heterodimeric UDP-N-acetylglucosamine transferase.
Wang C.D.; Xu S.; Chen S.; Chen Z.H.; Dean N.; Wang N.; Gao X.D.;
Front. Cell Dev. Biol. 10:1008078-1008078(2022)
Cited for: FUNCTION; SUBUNIT; CHARACTERIZATION OF VARIANT CMS15 LEU-65; CHARACTERIZATION OF VARIANT MEPCA ASN-74; GLN-109 AND GLY-141; Early and lethal neurodegeneration with myasthenic and myopathic features: A new ALG14-CDG.
Schorling D.C.; Rost S.; Lefeber D.J.; Brady L.; Mueller C.R.; Korinthenberg R.; Tarnopolsky M.; Boennemann C.G.; Rodenburg R.J.; Bugiani M.; Beytia M.; Krueger M.; van der Knaap M.; Kirschner J.;
Neurology 89:657-664(2017)
Cited for: INVOLVEMENT IN MEPCA; VARIANTS MEPCA ASN-74; GLN-109 AND GLY-141;
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.