UniProtKB/Swiss-Prot P11362: Variant p.Tyr339Cys

Fibroblast growth factor receptor 1
Gene: FGFR1
Chromosomal location: 8p11.1-p11.2
Variant information

Variant position:  339
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 Tyrosine (Y) to Cysteine (C) at position 339 (Y339C, p.Tyr339Cys).
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 aromatic (Y) to medium size and polar (C)
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 HH2.
Any additional useful information about the variant.



Sequence information

Variant position:  339
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  822
The length of the canonical sequence.

Location on the sequence:   TDKEMEVLHLRNVSFEDAGE  Y TCLAGNSIGLSHHSAWLTVL
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.

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 22 – 822 Fibroblast growth factor receptor 1
Topological domain 22 – 376 Extracellular
Domain 255 – 357 Ig-like C2-type 3
Glycosylation 330 – 330 N-linked (GlcNAc...)
Disulfide bond 277 – 341
Alternative sequence 62 – 822 Missing. In isoform 3.
Alternative sequence 151 – 822 Missing. In isoform 16.
Alternative sequence 313 – 391 TAGVNTTDKEMEVLHLRNVSFEDAGEYTCLAGNSIGLSHHSAWLTVLEALEERPAVMTSPLYLEIIIYCTGAFLISCMV -> VIMAPVFVGQSTGKETTVSGAQVPVGRLSCPRMGSFLTLQAHTLHLSRDLATSPRTSNRGHKVEVSWEQRAAGMGGAGL. In isoform 17 and isoform 18.
Alternative sequence 313 – 360 TAGVNTTDKEMEVLHLRNVSFEDAGEYTCLAGNSIGLSHHSAWLTVLE -> HSGINSSDAEVLTLFNVTEAQSGEYVCKVSNYIGEANQSAWLTVTRP. In isoform 19.
Beta strand 337 – 344


Literature citations

Mutations in fibroblast growth factor receptor 1 cause Kallmann syndrome with a wide spectrum of reproductive phenotypes.
Pitteloud N.; Meysing A.; Quinton R.; Acierno J.S. Jr.; Dwyer A.A.; Plummer L.; Fliers E.; Boepple P.; Hayes F.; Seminara S.; Hughes V.A.; Ma J.; Bouloux P.; Mohammadi M.; Crowley W.F. Jr.;
Mol. Cell. Endocrinol. 254:60-69(2006)
Cited for: VARIANTS HH2 CYS-78; ILE-102; HIS-224; ASP-237; GLN-254; MET-273; GLY-274 CYS-339; CYS-346; VAL-538; ARG-703 AND SER-703; VARIANT VAL-769;

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.