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UniProtKB/Swiss-Prot P21359: Variant p.Arg1276Gln

Gene: NF1
Variant information

Variant position:  1276
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 Arginine (R) to Glutamine (Q) at position 1276 (R1276Q, p.Arg1276Gln).
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 large size and basic (R) to medium size and polar (Q)
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

Involvement in disease:  Neurofibromatosis 1 (NF1) [MIM:162200]: A disease characterized by patches of skin pigmentation (cafe-au-lait spots), Lisch nodules of the iris, tumors in the peripheral nervous system and fibromatous skin tumors. Individuals with the disorder have increased susceptibility to the development of benign and malignant tumors. {ECO:0000269|PubMed:10220149, ECO:0000269|PubMed:10336779, ECO:0000269|PubMed:10607834, ECO:0000269|PubMed:10712197, ECO:0000269|PubMed:10980545, ECO:0000269|PubMed:11258625, ECO:0000269|PubMed:11735023, ECO:0000269|PubMed:11857752, ECO:0000269|PubMed:12522551, ECO:0000269|PubMed:12552569, ECO:0000269|PubMed:12746402, ECO:0000269|PubMed:1302608, ECO:0000269|PubMed:15060124, ECO:0000269|PubMed:15146469, ECO:0000269|PubMed:15520408, ECO:0000269|PubMed:15523642, ECO:0000269|PubMed:15948193, ECO:0000269|PubMed:17160901, ECO:0000269|PubMed:21089070, ECO:0000269|PubMed:2114220, ECO:0000269|PubMed:21838856, ECO:0000269|PubMed:23758643, ECO:0000269|PubMed:24413922, ECO:0000269|PubMed:7981679, ECO:0000269|PubMed:8081387, ECO:0000269|PubMed:8544190, ECO:0000269|PubMed:8807336, ECO:0000269|PubMed:8834249, ECO:0000269|PubMed:9003501, ECO:0000269|PubMed:9101300, ECO:0000269|PubMed:9150739, ECO:0000269|PubMed:9298829, ECO:0000269|PubMed:9668168}. 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 NF1 and mismatch repair deficient cancer cells.
Any additional useful information about the variant.

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

Sequence information

Variant position:  1276
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  2839
The length of the canonical sequence.

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.




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.

Chain 2 – 2839 Neurofibromin
Chain 2 – 1305 Neurofibromin truncated
Domain 1235 – 1451 Ras-GAP
Alternative sequence 552 – 2839 Missing. In isoform 3.
Alternative sequence 594 – 2839 Missing. In isoform 5.

Literature citations

Minor lesion mutational spectrum of the entire NF1 gene does not explain its high mutability but points to a functional domain upstream of the GAP-related domain.
Fahsold R.; Hoffmeyer S.; Mischung C.; Gille C.; Ehlers C.; Kuecuekceylan N.; Abdel-Nour M.; Gewies A.; Peters H.; Kaufmann D.; Buske A.; Tinschert S.; Nuernberg P.;
Am. J. Hum. Genet. 66:790-818(2000)
Cited for: VARIANTS NF1 PRO-216; PRO-357; CYS-491; PRO-549; THR-581; ARG-583; PHE-665; PRO-695; PRO-763; SER-777; LYS-780; PRO-781; PRO-847; SER-1156; PRO-1250; GLN-1276; PRO-1276; PRO-1446; VAL-1605 AND ILE-2507; VARIANT GLU-176;

Neurofibromatosis type 1 gene as a mutational target in a mismatch repair-deficient cell type.
Wang Q.; Montmain G.; Ruano E.; Upadhyaya M.; Dudley S.; Liskay R.M.; Thibodeau S.N.; Puisieux A.;
Hum. Genet. 112:117-123(2003)
Cited for: VARIANTS NF1 TYR-93; VAL-604; ARG-844 AND PRO-898; VARIANTS ASP-74; GLU-176; ARG-712 AND GLN-1276;

Automated comparative sequence analysis identifies mutations in 89% of NF1 patients and confirms a mutation cluster in exons 11-17 distinct from the GAP related domain.
Mattocks C.; Baralle D.; Tarpey P.; ffrench-Constant C.; Bobrow M.; Whittaker J.;
J. Med. Genet. 41:E48-E48(2004)
Cited for: VARIANTS NF1 ARG-31; PRO-145; ARG-324; VAL-337; CYS-489; PRO-532; ARG-574; ARG-629; PHE-665; PHE-844; PRO-844; MET-991 DEL; VAL-1073; ARG-1196; GLY-1276; GLN-1276; GLU-1430; GLU-1459 DEL AND GLY-1489; VARIANTS GLU-176 AND CYS-873;

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.