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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P02766: Variant p.Lys55Asn

Transthyretin
Gene: TTR
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Variant information Variant position: help 55 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 Lysine (K) to Asparagine (N) at position 55 (K55N, p.Lys55Asn). 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 (K) to medium size and polar (N) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 0 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 AMYL-TTR; amyloid polyneuropathy. Any additional useful information about the variant.


Sequence information Variant position: help 55 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 147 The length of the canonical sequence.
Location on the sequence: help KVLDAVRGSPAINVAVHVFR K AADDTWEPFASGKTSESGEL 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                         KVLDAVRGSPAINVAVHVFRKAADDTWEPFASGKTSESGEL

Chimpanzee                    KVLDAVRGSPAINVAVHVFKKAADETWEPFASGKTSESGEL

Mouse                         KVLDAVRGSPAVDVAVKVFKKTSEGSWEPFASGKTAESGEL

Rat                           KVLDAVRGSPAVDVAVKVFKKTADGSWEPFASGKTAESGEL

Pig                           KVLDAVRGSPAVNVGVKVFKKAADGTWEPFALGKTSEFGEL

Bovine                        KVLDAVRGSPAANVGVKVFKKAADETWEPFASGKTSESGEL

Rabbit                        KVLDAVRGSPAVDVSVHVFKKAADETWEPFASGKTSKTGEL

Sheep                         KVLDAVRGSPAANVGVKVFKKAADETWEPFASGKTSDSGEL

Chicken                       KVLDAVRGSPAANVAVKVFKKAADGTWQDFATGKTTEFGEI

Xenopus laevis                KVLDAVRGIPAANLLVNVFRQTESGKWEQITSGKTTELGEI

Xenopus tropicalis            KVLDAVRGIPAANLLVQVFRNT-EGNWELISSGKTTELGEI
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 21 – 147 Transthyretin
Binding site 35 – 35
Binding site 74 – 74
Modified residue 62 – 62 4-carboxyglutamate; in a patient with Moyamoya disease
Modified residue 72 – 72 Phosphoserine
Beta strand 49 – 55



Literature citations
Transthyretin gene analysis in European patients with suspected familial amyloid polyneuropathy.
Reilly M.M.; Adams D.; Booth D.R.; Davis M.B.; Said G.; Laubriat-Bianchin M.; Pepys M.B.; Thomas P.K.; Harding A.E.;
Brain 118:849-856(1995)
Cited for: VARIANTS AMYL-TTR MET-50; ASN-55; ALA-69; ARG-70; ALA-80; TYR-97 AND GLN-109;
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.