UniProtKB/Swiss-Prot Q76LX8: Variant p.Ser903Leu

A disintegrin and metalloproteinase with thrombospondin motifs 13
Gene: ADAMTS13
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Variant information Variant position:

903 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 Serine (S) to Leucine (L) at position 903 (S903L, p.Ser903Leu). 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 small size and polar (S) to medium size and hydrophobic (L) 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:

Genetic variations in ADAMTS13 coding region influence plasmatic ADAMTS13 activity levels. Dependent on the sequence context, the same polymorphisms might be either positive or negative modifiers of gene expression, thereby altering the phenotype of ADAMTS13 deficiency. Additional information on the polymorphism described.
Other resources:

Links to websites of interest for the variant.

Variant rs78977446 [ dbSNP | Ensembl ]

Sequence information Variant position:

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

1427 The length of the canonical sequence.
Location on the sequence:

PWGSIRTGAQAAHVWTPAAG S CSVSCGRGLMELRFLCMDSA 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                         PWGSIRTGAQAAHVWTPAAGSCSVSCGRGLMELRFLCMDSA

Mouse                         PVGSDKPGAQAEHVWTPLVGLCSISCGRGLKELYFLCMDSV

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	75 – 1427	A disintegrin and metalloproteinase with thrombospondin motifs 13
Domain	896 – 950	TSP type-1 5
Glycosylation	907 – 907	O-linked (Fuc...) serine
Alternative sequence	693 – 1427	Missing. In isoform 4.
Mutagenesis	907 – 907	S -> A. No effect on cleavage of VWF and greatly reduced secretion of ADAMTS13. Abolishes most of the secretion of ADAMTS13; when associated with A-965.

Literature citations
Identification of two novel mutations in ADAMTS13 gene in a patient with hereditary thrombotic thrombocytopenic purpura.
Liu F.; Jin J.; Dong N.Z.; Wang Y.G.; Ruan C.G.;
Zhonghua Xue Ye Xue Za Zhi 26:521-524(2005)
Cited for: VARIANTS LEU-903 AND TRP-1095; Novel compound heterozygote mutations (H234Q/R1206X) of the ADAMTS13 gene in an adult patient with Upshaw-Schulman syndrome showing predominant episodes of repeated acute renal failure.
Shibagaki Y.; Matsumoto M.; Kokame K.; Ohba S.; Miyata T.; Fujimura Y.; Fujita T.;
Nephrol. Dial. Transplant. 21:1289-1292(2006)
Cited for: VARIANT TTP GLN-234; VARIANT LEU-903;

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.