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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P21802: Variant p.Cys342Tyr

Fibroblast growth factor receptor 2
Gene: FGFR2
Variant information Variant position: help 342 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 Cysteine (C) to Tyrosine (Y) at position 342 (C342Y, p.Cys342Tyr). 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 polar (C) to large size and aromatic (Y) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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: help In CS and PS. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.

Sequence information Variant position: help 342 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 821 The length of the canonical sequence.
Location on the sequence: help KEIEVLYIRNVTFEDAGEYT C LAGNSIGISFHSAWLTVLPA 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.






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.
Chain 22 – 821 Fibroblast growth factor receptor 2
Topological domain 22 – 377 Extracellular
Domain 256 – 358 Ig-like C2-type 3
Glycosylation 331 – 331 N-linked (GlcNAc...) asparagine
Disulfide bond 278 – 342
Alternative sequence 250 – 361 Missing. In isoform 17.
Alternative sequence 255 – 821 Missing. In isoform 8.
Alternative sequence 314 – 429 Missing. In isoform 9.
Alternative sequence 341 – 353 TCLAGNSIGISFH -> ICKVSNYIGQANQ. In isoform 3, isoform 4, isoform 11, isoform 12, isoform 13 and isoform 16.
Alternative sequence 361 – 361 P -> PKQQ. In isoform 3, isoform 4, isoform 11, isoform 12, isoform 13 and isoform 16.
Beta strand 338 – 346

Literature citations
Crouzon syndrome: mutations in two spliceoforms of FGFR2 and a common point mutation shared with Jackson-Weiss syndrome.
Gorry M.C.; Preston R.A.; White G.J.; Zhang Y.; Singhal V.K.; Losken H.W.; Parker M.G.; Nwokoro N.A.; Post J.C.; Ehrlich G.D.;
Hum. Mol. Genet. 4:1387-1390(1995)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 263-361; VARIANTS CS PRO-289; ARG-338; SER-342; TYR-342; GLY-344 AND CYS-354; Mutations in the fibroblast growth factor receptor 2 gene cause Crouzon syndrome.
Reardon W.; Winter R.M.; Rutland P.; Pulleyn L.J.; Jones B.M.; Malcolm S.;
Nat. Genet. 8:98-103(1994)
Cited for: VARIANTS CS HIS-340; ARG-342; SER-342; TYR-342 AND CYS-354; Identical mutations in the FGFR2 gene cause both Pfeiffer and Crouzon syndrome phenotypes.
Rutland P.; Pulleyn L.J.; Reardon W.; Baraister M.; Hayward R.; Jones B.M.; Malcolm S.; Winter R.M.; Oldridge M.; Slaney S.F.; Poole M.D.; Wilkie A.O.M.;
Nat. Genet. 9:173-176(1995)
Cited for: VARIANTS PS PRO-341; ARG-342 AND TYR-342; FGFR2 exon IIIa and IIIc mutations in Crouzon, Jackson-Weiss, and Pfeiffer syndromes: evidence for missense changes, insertions, and a deletion due to alternative RNA splicing.
Meyers G.A.; Day D.; Goldberg R.; Daentl D.L.; Przylepa K.A.; Abrams L.J.; Graham J.M. Jr.; Feingold M.; Moeschler J.B.; Rawnsley E.; Scott A.F.; Jabs E.W.;
Am. J. Hum. Genet. 58:491-498(1996)
Cited for: VARIANTS CS GLY-268 INS; PHE-342 AND TYR-342; VARIANTS PS PHE-278; ARG-342; SER-342; PRO-344 AND PHE-359; VARIANT JWS PRO-289; Description of a new mutation and characterization of FGFR1, FGFR2, and FGFR3 mutations among Brazilian patients with syndromic craniosynostoses.
Passos-Bueno M.R.; Sertie A.L.; Richieri-Costa A.; Alonso L.G.; Zatz M.; Alonso N.; Brunoni D.; Ribeiro S.F.M.;
Am. J. Med. Genet. 78:237-241(1998)
Cited for: VARIANTS CS PHE-278; PRO-337; ARG-338; ARG-342; PHE-342 AND TYR-342; VARIANTS APRS TRP-252 AND ARG-253; VARIANT JWS PHE-278; Clustering of FGFR2 gene mutations in patients with Pfeiffer and Crouzon syndromes (FGFR2-associated craniosynostoses).
Kress W.; Collmann H.; Buesse M.; Halliger-Keller B.; Mueller C.R.;
Cytogenet. Cell Genet. 91:134-137(2000)
Cited for: VARIANTS CS/PS ARG-342 AND TYR-342; VARIANTS CS LEU-263; VAL-276; PHE-278; TYR-278; SER-288; PRO-289; PRO-341; TRP-342; CYS-354; TYR-354 AND PHE-359; VARIANT PS SER-342; Mutation analysis of Crouzon syndrome and identification of one novel mutation in Taiwanese patients.
Tsai F.-J.; Yang C.-F.; Wu J.-Y.; Tsai C.-H.; Lee C.-C.;
Pediatr. Int. 43:263-266(2001)
Cited for: VARIANTS CS CYS-281; PRO-289; ARG-342 AND TYR-342; Genomic screening of fibroblast growth-factor receptor 2 reveals a wide spectrum of mutations in patients with syndromic craniosynostosis.
Kan S.-H.; Elanko N.; Johnson D.; Cornejo-Roldan L.R.; Cook J.; Reich E.W.; Tomkins S.; Verloes A.; Twigg S.R.F.; Rannan-Eliya S.; McDonald-McGinn D.M.; Zackai E.H.; Wall S.A.; Muenke M.; Wilkie A.O.M.;
Am. J. Hum. Genet. 70:472-486(2002)
Cited for: VARIANTS CS CYS-105; PRO-267; VAL-276; CYS-281; PRO-289; ARG-338; HIS-340; PHE-342; TRP-342; CYS-347; CYS-354; HIS-549 AND GLY-678; VARIANTS PS PHE-172; 252-SER-PRO-253 DELINS PHE-SER; CYS-290; CYS-340; PRO-341; ARG-342; SER-342; CYS-375; GLY-565; ARG-641 AND GLU-663; VARIANTS APRS TRP-252 AND ARG-253; VARIANTS CS/PS PHE-278 AND TYR-342; VARIANT CRANIOSYNOSTOSIS ASN-659; VARIANTS THR-186 AND SER-315;
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.