UniProtKB/Swiss-Prot Q9NS56: Variant p.Asn749Asp

E3 ubiquitin-protein ligase Topors
Gene: TOPORS
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Variant information Variant position:

749 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 749 (N749D, p.Asn749Asp). 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.

Variant rs17857515 [ dbSNP | Ensembl ]

Sequence information Variant position:

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

1045 The length of the canonical sequence.
Location on the sequence:

HYSRQSSSPEFRVQSFSERT N ARKKNNHSERKYYYYERHRS 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                         HYSRQSSSPEFRVQSFSERTNARKKNNHSERKYYYYERHRS

Mouse                         HYSRQSSSPEFRIQSFSERTNARKK-NHSERKYYYYERRRS

Drosophila                    KPQRQPESSSDSPSSSDDESGGDSS-----------ESSGQ

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	1 – 1045	E3 ubiquitin-protein ligase Topors
Region	456 – 882	Interaction with TOP1
Region	713 – 936	Disordered
Compositional bias	745 – 772	Basic and acidic residues
Modified residue	734 – 734	Phosphoserine

Literature citations
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] (ISOFORM 1); VARIANTS THR-154; LYS-517 AND ASP-749;

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.