Expasy logo

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9UMX9: Variant p.Asp157Asn

Membrane-associated transporter protein
Gene: SLC45A2
Feedback?
Variant information Variant position: help 157 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LP/P [Disclaimer] 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: help From Aspartate (D) to Asparagine (N) at position 157 (D157N, p.Asp157Asn). 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: help Change from medium size and acidic (D) to medium size and polar (N) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 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
Variant description: help In OCA4. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 157 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 530 The length of the canonical sequence.
Location on the sequence: help KLVWAISVTMIGVVLFDFAA D FIDGPIKAYLFDVCSHQDKE 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: help The multiple alignment of the region surrounding the variant against various orthologous sequences. 
Human                         KLVWAISVTMIGVVLFDFAADFIDGPIKAYLFDVCSHQDKE

Mouse                         KLIWAISITMVGVVLFDFSADFIDGPIKAYLFDVCSHQDKE

Pig                           KPIWAISITMTGVVLFDFAADFIDGPIKAYLFDVCTHQDKE
Sequence annotation in neighborhood: help 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 – 530 Membrane-associated transporter protein
Transmembrane 139 – 159 Helical; Name=4
Alternative sequence 129 – 187 Missing. In isoform 3.



Literature citations
Oculocutaneous albinism type 4 is one of the most common types of albinism in Japan.
Inagaki K.; Suzuki T.; Shimizu H.; Ishii N.; Umezawa Y.; Tada J.; Kikuchi N.; Takata M.; Takamori K.; Kishibe M.; Tanaka M.; Miyamura Y.; Ito S.; Tomita Y.;
Am. J. Hum. Genet. 74:466-471(2004)
Cited for: VARIANTS OCA4 SER-58; ASN-157 AND VAL-188; VARIANTS LYS-272; PRO-500 AND LEU-507; A Korean case of oculocutaneous albinism type IV caused by a D157N mutation in the MATP gene.
Suzuki T.; Inagaki K.; Fukai K.; Obana A.; Lee S.-T.; Tomita Y.;
Br. J. Dermatol. 152:174-175(2005)
Cited for: VARIANT OCA4 ASN-157; SLC45A2 variations in Indian oculocutaneous albinism patients.
Sengupta M.; Chaki M.; Arti N.; Ray K.;
Mol. Vis. 13:1406-1411(2007)
Cited for: VARIANTS OCA4 ILE-42; SER-64; ASN-157; SER-302 AND CYS-348; VARIANTS LYS-272 AND PHE-374; A comprehensive analysis reveals mutational spectra and common alleles in Chinese patients with oculocutaneous albinism.
Wei A.; Wang Y.; Long Y.; Wang Y.; Guo X.; Zhou Z.; Zhu W.; Liu J.; Bian X.; Lian S.; Li W.;
J. Invest. Dermatol. 130:716-724(2010)
Cited for: VARIANTS OCA4 ARG-110; PRO-151; ASN-157; HIS-160; GLN-233; ARG-349; LYS-368 AND LEU-418;
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.