UniProtKB/Swiss-Prot Q15582: Variant p.Leu518Arg

Transforming growth factor-beta-induced protein ig-h3
Gene: TGFBI
Chromosomal location: 5q31
Variant information

Variant position:  518
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 have been found in patients and disease-association is reported in literature. However, this classification is not a definitive assessment of variant pathogenicity.
  • Polymorphism: No disease-association has been reported.
  • Unclassified: Variants have been found in patients but disease-association remains unclear.

Residue change:  From Leucine (L) to Arginine (R) at position 518 (L518R, p.Leu518Arg).
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 hydrophobic (L) 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

Variant description:  In CDL1; severe phenotype; delayed age of onset.
Any additional useful information about the variant.



Sequence information

Variant position:  518
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  683
The length of the canonical sequence.

Location on the sequence:   LTPPMGTVMDVLKGDNRFSM  L VAAIQSAGLTETLNREGVYT
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                         LTPPMGTVMDVLKGDNRFSMLVAAIQSAGLTETLNREGVYT

Mouse                         LTPPMGTVMDVLKGDNRFSMLVAAIQSAGLMEILNREGVYT

Pig                           LTPPMGTVMDVLKGDNRFSMLVAAIQSAGLTETLNREGVYT

Rabbit                        LTPPSGTVMDVLKGDNRFSMLVAAIQFRRLTETLNREGAYT

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 – 683 Transforming growth factor-beta-induced protein ig-h3
Domain 502 – 632 FAS1 4
Modified residue 529 – 529 4-carboxyglutamate
Modified residue 534 – 534 4-carboxyglutamate
Helix 516 – 525


Literature citations

BIGH3 mutation spectrum in corneal dystrophies.
Munier F.L.; Frueh B.E.; Othenin-Girard P.; Uffer S.; Cousin P.; Wang M.X.; Heon E.; Black G.C.M.; Blasi M.A.; Balestrazzi E.; Lorenz B.; Escoto R.; Barraquer R.; Hoeltzenbein M.; Gloor B.; Fossarello M.; Singh A.D.; Arsenijevic Y.; Zografos L.; Schorderet D.F.;
Invest. Ophthalmol. Vis. Sci. 43:949-954(2002)
Cited for: VARIANTS CORNEAL DYSTROPHIES CYS-124; HIS-124; SER-124; ARG-518; ARG-538; PHE-540 DEL; TRP-555; LYS-622; ASP-623; ARG-626; PRO-626 AND ASP-631;

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.