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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P02671: Variant p.Arg160Ser

Fibrinogen alpha chain
Gene: FGA
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Variant information Variant position: help 160 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help US 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 Arginine (R) to Serine (S) at position 160 (R160S, p.Arg160Ser). 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 large size and basic (R) 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 Lima. Any additional useful information about the variant.


Sequence information Variant position: help 160 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 866 The length of the canonical sequence.
Location on the sequence: help VLKRKVIEKVQHIQLLQKNV R AQLVDMKRLEVDIDIKIRSC 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                         VLKRKVIEKVQHIQLLQKNVRAQLVDMKRLEVDIDIKIRSC

Mouse                         ILRRKVIEKAQQIQALQSNVRAQLIDMKRLEVDIDIKIRSC

Rat                           ILKRKVIEKAQQIQVLQKDVRDQLIDMKRLEVDIDIKIRSC

Bovine                        ILRRKVIEQVQRIKVLQKNVRDQLVDMKRLEVDIDIKIRSC

Chicken                       TLKQRVATQVNRIKALQNSIQEQVVEMKRLEVDIDIKIRAC

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 36 – 866 Fibrinogen alpha chain
Coiled coil 68 – 631
Disulfide bond 180 – 180 Interchain (with C-165 in gamma chain)
Helix 142 – 178



Literature citations
Fibrinogen Lima: a homozygous dysfibrinogen with an A alpha-arginine-141 to serine substitution associated with extra N-glycosylation at A alpha-asparagine-139. Impaired fibrin gel formation but normal fibrin-facilitated plasminogen activation catalyzed by tissue-type plasminogen activator.
Maekawa H.; Yamazumi K.; Muramatsu S.; Kaneko M.; Hirata H.; Takahashi N.; Arocha-Pinango C.L.; Rodriguez S.; Nagy H.; Perez-Requejo J.L.; Matsuda M.;
J. Clin. Invest. 90:67-76(1992)
Cited for: VARIANT LIMA SER-160;
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.