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UniProtKB/Swiss-Prot Q96DX7: Variant p.Gly155Arg

Tripartite motif-containing protein 44
Gene: TRIM44
Variant information

Variant position:  155
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Disease [Disclaimer]
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 Glycine (G) to Arginine (R) at position 155 (G155R, p.Gly155Arg).
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 glycine (G) to large size and basic (R)
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

Involvement in disease:  Aniridia 3 (AN3) [MIM:617142]: A form of aniridia, a congenital, bilateral, panocular disorder characterized by complete absence of the iris or extreme iris hypoplasia. Aniridia is not just an isolated defect in iris development but it is associated with macular and optic nerve hypoplasia, cataract, corneal changes, nystagmus. Visual acuity is generally low but is unrelated to the degree of iris hypoplasia. Glaucoma is a secondary problem causing additional visual loss over time. {ECO:0000269|PubMed:26394807}. Note=The disease is caused by mutations affecting the gene represented in this entry.
The name and a short description of the disease associated with the variant. For more information about the disease, the user can refer to OMIM, following the link provided after the disease acronym.

Variant description:  In AN3; affects function and results in increased negative regulation of PAX6 expression compared to wild-type.
Any additional useful information about the variant.

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



Sequence information

Variant position:  155
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  344
The length of the canonical sequence.

Location on the sequence:   DEQESEAEEDNQEEGESEAE  G ETEAESEFDPEIEMEAERVA
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                         DEQESEAEEDNQEEGESEAEGETEAESEFDPEIEMEAERVA

Mouse                         DEQESEAEEDNQEEGESEAEGETEAESEFDPEIEMEAERVA

Rat                           DEQESEAEEDNQE-GESEAEGETEAESEFDPEIEMEAERVA

Bovine                        DEQESEAEEDNQEEGESEAEGETEAESEFDPEIEMEAERVA

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 1 – 344 Tripartite motif-containing protein 44
Compositional bias 74 – 172 Glu-rich


Literature citations

Variants in TRIM44 cause aniridia by impairing PAX6 expression.
Zhang X.; Qin G.; Chen G.; Li T.; Gao L.; Huang L.; Zhang Y.; Ouyang K.; Wang Y.; Pang Y.; Zeng B.; Yu L.;
Hum. Mutat. 36:1164-1167(2015)
Cited for: FUNCTION; INVOLVEMENT IN AN3; VARIANT TYR-64; CHARACTERIZATION OF VARIANT TYR-64; VARIANT AN3 ARG-155; CHARACTERIZATION OF VARIANT AN3 ARG-155;

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.