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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P35555: Variant p.Asn2144Ser

Fibrillin-1
Gene: FBN1
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Variant information Variant position: help 2144 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 Asparagine (N) to Serine (S) at position 2144 (N2144S, p.Asn2144Ser). 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 (N) to small size and polar (S) 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 MFS. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 2144 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 2871 The length of the canonical sequence.
Location on the sequence: help SAVDMDECKEPDVCKHGQCI N TDGSYRCECPFGYILAGNEC 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                         SAVDMDECKEPDVCKHGQCINTDGSYRCECPFGYILAGNEC

Mouse                         SAVDMDECKEPDVCRHGQCINTDGSYRCECPFGYILEGNEC

Pig                           SAVDMDECKEPDVCKHGQCINTDGSYRCECPFGYILEGNEC

Bovine                        SAVDMDECKEPDVCKHGQCINTDGSYRCECPFGYILQGNEC
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 45 – 2731 Fibrillin-1
Domain 2127 – 2165 EGF-like 36; calcium-binding
Region 1528 – 2731 C-terminal domain
Glycosylation 2148 – 2148 O-linked (Glc) serine
Disulfide bond 2137 – 2151



Literature citations
A novel fibrillin mutation in the Marfan syndrome which could disrupt calcium binding of the epidermal growth factor-like module.
Hewett D.R.; Lynch J.R.; Smith R.; Sykes B.C.;
Hum. Mol. Genet. 2:475-477(1993)
Cited for: VARIANT MFS SER-2144; Identification of 29 novel and nine recurrent fibrillin-1 (FBN1) mutations and genotype-phenotype correlations in 76 patients with Marfan syndrome.
Rommel K.; Karck M.; Haverich A.; von Kodolitsch Y.; Rybczynski M.; Muller G.; Singh K.K.; Schmidtke J.; Arslan-Kirchner M.;
Hum. Mutat. 26:529-539(2005)
Cited for: VARIANTS MFS ASN-507 DEL; TYR-541; CYS-627; TYR-781; ARG-985; ARG-1013; VAL-1113; GLY-1284; SER-1475; GLU-1475; THR-1576; ARG-1791; GLY-1928; TYR-1928; TYR-2038; ARG-2085; SER-2144; ARG-2536 AND TYR-2605; Identification of novel FBN1 and TGFBR2 mutations in 65 probands with Marfan syndrome or Marfan-like phenotypes.
Chung B.H.; Lam S.T.; Tong T.M.; Li S.Y.; Lun K.S.; Chan D.H.; Fok S.F.; Or J.S.; Smith D.K.; Yang W.; Lau Y.L.;
Am. J. Med. Genet. A 149A:1452-1459(2009)
Cited for: VARIANTS MFS ASP-57; TYR-100; TYR-129; 861-ARG--HIS-2871 DEL; HIS-910; 921-CYS--HIS-2871 DEL; PRO-1130; 1790-ARG--HIS-2871 DEL; ARG-1812; SER-1826; TRP-2084; LYS-2130; SER-2144; 2298-LYS--HIS-2871 DEL; TYR-2522 AND SER-2708;
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.