UniProtKB/Swiss-Prot Q15796: Variant p.Asn318Lys

Mothers against decapentaplegic homolog 2
Gene: SMAD2
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Variant information Variant position:

318 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant:

US 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 Lysine (K) at position 318 (N318K, p.Asn318Lys). 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 basic (K) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score:

0 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:

Found in a patient with Marfan syndrome-like phenotype; uncertain significance. Any additional useful information about the variant.

Sequence information Variant position:

318 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length:

467 The length of the canonical sequence.
Location on the sequence:

TVDGFTDPSNSERFCLGLLS N VNRNATVEMTRRHIGRGVRL 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                         TVDGFTDPSNSERFCLGLLSNVNRNATVEMTRRHIGRGVRL

Mouse                         TVDGFTDPSNSERFCLGLLSNVNRNATVEMTRRHIGRGVRL

Rat                           TVDGFTDPSNSERFCLGLLSNVNRNATVEMTRRHIGRGVRL

Bovine                        TVDGFTDPSNSERFCLGLLSNVNRNATVEMTRRHIGRGVRL

Zebrafish                     TVDGFTDPSNSERFCLGLLSNVNRNATVEMTRRHIGRGVRL

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.

Type	Positions	Description
Chain	2 – 467	Mothers against decapentaplegic homolog 2
Domain	274 – 467	MH2

Literature citations
Novel pathogenic SMAD2 variants in five families with arterial aneurysm and dissection: further delineation of the phenotype.
Cannaerts E.; Kempers M.; Maugeri A.; Marcelis C.; Gardeitchik T.; Richer J.; Micha D.; Beauchesne L.; Timmermans J.; Vermeersch P.; Meyten N.; Chenier S.; van de Beek G.; Peeters N.; Alaerts M.; Schepers D.; Van Laer L.; Verstraeten A.; Loeys B.;
J. Med. Genet. 56:220-227(2019)
Cited for: VARIANTS LDS6 THR-361 AND TYR-397; VARIANTS LYS-318 AND LEU-467;

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.