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UniProtKB/Swiss-Prot P01009: Variant p.Glu400Asp

Variant information

Variant position:  400
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 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 Glutamate (E) to Aspartate (D) at position 400 (E400D, p.Glu400Asp).
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:  Similar physico-chemical property. Both residues are medium size and acidic.
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

Polymorphism:  The sequence shown is that of the M1V allele which is the most common form of PI (44 to 49%). Other frequent alleles are: M1A 20 to 23%; M2 10 to 11%; M3 14 to 19%.
Additional information on the polymorphism described.

Variant description:  In M2 and M3; associated with H-125 in M2.
Any additional useful information about the variant.

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

Sequence information

Variant position:  400
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  418
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.

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 25 – 418 Alpha-1-antitrypsin
Peptide 375 – 418 Short peptide from AAT
Modified residue 383 – 383 Phosphoserine
Alternative sequence 307 – 418 Missing. In isoform 3.
Mutagenesis 382 – 382 M -> V. Oxidation-resistant inhibitor of therapeutic importance.
Beta strand 394 – 400

Literature citations

An alpha-1 antitrypsin genetic variant from India.
Shasany A.K.; Shukla A.K.; Darokar M.P.; Saraiya M.; Chaturvedi N.; Tewari L.; Khanuja S.P.;
Indian J. Biochem. Biophys. 44:176-178(2007)

Characterisation of the alpha-1-antitrypsin M3 gene, a normal variant.
Graham A.; Hayes K.; Weidinger S.; Newton C.R.; Markham A.F.; Kalsheker N.A.;
Hum. Genet. 85:381-382(1990)
Cited for: VARIANT M3 ASP-400;

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.