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UniProtKB/Swiss-Prot P35555: Variant p.Cys129Tyr

Fibrillin-1
Gene: FBN1
Variant information

Variant position:  129
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  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:  From Cysteine (C) to Tyrosine (Y) at position 129 (C129Y, p.Cys129Tyr).
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 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:  -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 MFS; severe neonatal.
Any additional useful information about the variant.

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



Sequence information

Variant position:  129
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  2871
The length of the canonical sequence.

Location on the sequence:   PSCGSRSIQHCNIRCMNGGS  C SDDHCLCQKGYIGTHCGQPV
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.

Human                         PSCGSRSIQHCNIRCMNGGSCSDDHCLCQKGYIGTHCGQPV

Mouse                         PSCGSRSIQHCSIRCMNGGSCSDDHCLCQKGYIGTHCGQPV

Pig                           PSCGSRSIQHCNIRCMNGGSCSDDHCLCQKGYIGTHCGQPV

Bovine                        PSCGSRSIQHCNIRCMNGGSCSDDHCLCQKGYIGTHCGQPV

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 45 – 2731 Fibrillin-1
Domain 115 – 146 EGF-like 2
Region 45 – 450 N-terminal domain
Region 119 – 329 Interaction with MFAP4
Disulfide bond 119 – 129
Disulfide bond 123 – 134
Beta strand 128 – 130


Literature citations

Fifteen novel FBN1 mutations causing Marfan syndrome detected by heteroduplex analysis of genomic amplicons.
Nijbroek G.; Sood S.; McIntosh I.; Francomano C.A.; Bull E.; Pereira L.; Ramirez F.; Pyeritz R.E.; Dietz H.C.;
Am. J. Hum. Genet. 57:8-21(1995)
Cited for: VARIANTS MFS TYR-129; PHE-166; CYS-746; ARG-926; ARG-1013; LYS-1073; SER-1382 AND ARG-1928;

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.