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UniProtKB/Swiss-Prot P02766: Variant p.His110Asn

Transthyretin
Gene: TTR
Variant information

Variant position:  110
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Polymorphism
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants implicated in disease according to literature reports.
  • Polymorphism: Variants not reported to be implicated in disease.
  • Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:  From Histidine (H) to Asparagine (N) at position 110 (H110N, p.His110Asn).
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:  Similar physico-chemical property. Both residues are medium size and polar.
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  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

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



Sequence information

Variant position:  110
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  147
The length of the canonical sequence.

Location on the sequence:   KVEIDTKSYWKALGISPFHE  H AEVVFTANDSGPRRYTIAAL
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                         KVEIDTKSYWKALGISPFHEHAEVVFTANDSGPRRYTIAAL

Chimpanzee                    KVEIDTKSYWKALGISPFHEHAEVVFTANDSGPRRYTIAAL

Mouse                         RVELDTKSYWKTLGISPFHEFADVVFTANDSGHRHYTIAAL

Rat                           RVELDTKSYWKALGISPFHEYAEVVFTANDSGHRHYTIAAL

Pig                           KVELDTKSYWKALGISPFHEYAEVVFTANDSGRRHYTIAAL

Bovine                        KVELDTKSYWKSLGISPFHEFAEVVFTANDSGPRHYTIAAL

Rabbit                        KVELDTKSYWKALGISPFHEYAEVVFTANDSGHRSYTIAAL

Sheep                         KVELDTKSYWKSLGISPFHEYAEVVFTANDSGLRHYTIAAL

Chicken                       RVEFDTSSYWKGLGLSPFHEYADVVFTANDSGHRHYTIAAL

Xenopus laevis                KIEFATKAFWGKLGLSPFHEYVDVVFTANDAGHRHYTIAVL

Xenopus tropicalis            KIEFATKTFWRKLGLSPFHEYVDVVFSANDAGHRHYTIAVL

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 21 – 147 Transthyretin
Glycosylation 118 – 118 N-linked (GlcNAc...) asparagine
Mutagenesis 107 – 107 F -> M. Loss of tetramerization; when associated with M-130.
Mutagenesis 130 – 130 L -> M. Loss of tetramerization; when associated with M-107.
Beta strand 107 – 118


Literature citations

Two transthyretin mutations (Glu42Gly, His90Asn) in an Italian family with amyloidosis.
Skare J.C.; Jones L.A.; Myles N.; Kane K.; Milunsky A.; Cohen A.S.; Skinner M.;
Clin. Genet. 45:281-284(1994)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 24-67; VARIANT AMYL-TTR GLY-62; VARIANT ASN-110;

A new transthyretin variant from a patient with familial amyloidotic polyneuropathy has asparagine substituted for histidine at position 90.
Skare J.C.; Milunsky J.M.; Milunsky A.; Skare I.B.; Cohen A.S.; Skinner M.;
Clin. Genet. 39:6-12(1991)
Cited for: VARIANT ASN-110;

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.