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UniProtKB/Swiss-Prot P01023: Variant p.Asn639Asp

Alpha-2-macroglobulin
Gene: A2M
Variant information

Variant position:  639
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  LB/B
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 Aspartate (D) at position 639 (N639D, p.Asn639Asp).
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 medium size and acidic (D)
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:  639
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  1474
The length of the canonical sequence.

Location on the sequence:   YNLLPEKDLTGFPGPLNDQD  N EDCINRHNVYINGITYTPVS
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.

TypePositionsDescription
Chain 24 – 1474 Alpha-2-macroglobulin
Disulfide bond 595 – 771


Literature citations

Nucleotide sequence of cDNA encoding human alpha 2-macroglobulin and assignment of the chromosomal locus.
Kan C.-C.; Solomon E.; Belt K.T.; Chain A.C.; Hiorns L.R.; Fey G.H.;
Proc. Natl. Acad. Sci. U.S.A. 82:2282-2286(1985)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANTS ASP-639 AND VAL-1000;

Alpha(2) macroglobulin, a PSA-binding protein, is expressed in human prostate stroma.
Lin V.K.; Wang S.-Y.; Boetticher N.C.; Vazquez D.V.; Saboorian H.; McConnell J.D.; Roehrborn C.G.;
Prostate 63:299-308(2005)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANTS ASP-639 AND VAL-1000;

Submission
Totoki Y.; Toyoda A.; Takeda T.; Sakaki Y.; Tanaka A.; Yokoyama S.; Ohara O.; Nagase T.; Kikuno R.F.;
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]; VARIANT ASP-639;

The full-ORF clone resource of the German cDNA consortium.
Bechtel S.; Rosenfelder H.; Duda A.; Schmidt C.P.; Ernst U.; Wellenreuther R.; Mehrle A.; Schuster C.; Bahr A.; Bloecker H.; Heubner D.; Hoerlein A.; Michel G.; Wedler H.; Koehrer K.; Ottenwaelder B.; Poustka A.; Wiemann S.; Schupp I.;
BMC Genomics 8:399-399(2007)
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]; VARIANTS ASP-639 AND VAL-1000;

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]; VARIANTS ASP-639 AND VAL-1000;

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.