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UniProtKB/Swiss-Prot P06213: Variant p.Leu89Pro

Insulin receptor
Gene: INSR
Variant information

Variant position:  89
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 Leucine (L) to Proline (P) at position 89 (L89P, p.Leu89Pro).
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 hydrophobic.
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -3
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 IRAN type A.
Any additional useful information about the variant.



Sequence information

Variant position:  89
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  1382
The length of the canonical sequence.

Location on the sequence:   RPEDFRDLSFPKLIMITDYL  L LFRVYGLESLKDLFPNLTVI
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                         RPEDFRDL--------------SFPKLIMITDYLLLFRVYGLESLKDLFPNLTVI

Mouse                         RPEDFRDL--------------SFPKLIMITDYLLLFRVYG

Rat                           RPEDFRDL--------------SFPKLIMITDYLLLFRVYG

Xenopus laevis                KPENFRGL--------------RFPKLTTITDYLLLFRVYG

Caenorhabditis elegans        KTKAQEEMHRSLQPRYSQDEFITFPHLREITGTLLVFETEG

Drosophila                    SPLNR-----------------SFPKLTEVTDYIIIYRVTG

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 28 – 758 Insulin receptor subunit alpha
Topological domain 28 – 758 Extracellular
Glycosylation 105 – 105 N-linked (GlcNAc...) asparagine
Beta strand 88 – 93


Literature citations

Identification of two novel insulin receptor mutations, Asp59Gly and Leu62Pro, in type A syndrome of extreme insulin resistance.
Rouard M.; Macari F.; Bouix O.; Lautier C.; Brun J.F.; Lefebvre P.; Renard E.; Bringer J.; Jaffiol C.; Grigorescu F.;
Biochem. Biophys. Res. Commun. 234:764-768(1997)
Cited for: VARIANTS IRAN TYPE A GLY-86 AND PRO-89;

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.