Home  |  Contact
Due to maintenance work, this service will be unavailable Mon Feb 13 between 07:00 and 09:30 - CET. Apologies for the inconvenience.

UniProtKB/Swiss-Prot P80365: Variant p.Tyr338His

11-beta-hydroxysteroid dehydrogenase type 2
Gene: HSD11B2
Variant information

Variant position:  338
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 Tyrosine (Y) to Histidine (H) at position 338 (Y338H, p.Tyr338His).
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 large size and aromatic (Y) to medium size and polar (H)
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 AME; abolishes enzyme activity; decreased half-life from 21 to 3 hours compared to wild-type, probably due to degradation via the proteasomal pathway.
Any additional useful information about the variant.

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



Sequence information

Variant position:  338
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  405
The length of the canonical sequence.

Location on the sequence:   LTPVVDAITDALLAARPRRR  Y YPGQGLGLMYFIHYYLPEGL
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                         LTPVVDAITDALLAARPRRRYYPGQGLGLMYFIHYYLPEGL

Mouse                         LSPVVDAIIDALLAAQPRSRYYPGRGLGLMYFIHHYLPEGL

Rat                           LSPVVDAIIDALLAAQPRSRYYTGRGLGLMYFIHHYLPGGL

Bovine                        LSPVVDAITDALLAAQPLRRYYPGHGLGLIYFIHYYLPEGL

Rabbit                        LSPVVDAITDALLAARPRPRYYPGRGLGLMYFIHYYLPEGL

Sheep                         LSPVVDAITDALLAAQPRRRYYPGHGLGLIYFIHYYLPEGC

Zebrafish                     LSPVIDTIVEALLSPQPQVRYYAGPGLILMYFICSYLPLSI

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 1 – 405 11-beta-hydroxysteroid dehydrogenase type 2
Region 335 – 339 Essential for protein stability
Mutagenesis 335 – 335 R -> AQ. Reduced enzyme activity.
Mutagenesis 335 – 335 R -> K. No effect on enzyme activity.
Mutagenesis 336 – 336 R -> AQ. Almost complete loss of enzyme activity.
Mutagenesis 336 – 336 R -> K. Reduced enzyme activity.
Mutagenesis 337 – 337 R -> AQ. Almost complete loss of enzyme activity.
Mutagenesis 337 – 337 R -> K. Reduced enzyme activity.
Mutagenesis 338 – 338 Y -> FA. Complete loss of enzyme activity.
Mutagenesis 339 – 339 Y -> AFH. Reduced enzyme activity.


Literature citations

Impaired protein stability of 11beta-hydroxysteroid dehydrogenase type 2: a novel mechanism of apparent mineralocorticoid excess.
Atanasov A.G.; Ignatova I.D.; Nashev L.G.; Dick B.; Ferrari P.; Frey F.J.; Odermatt A.;
J. Am. Soc. Nephrol. 18:1262-1270(2007)
Cited for: VARIANTS AME CYS-337 AND HIS-338; FUNCTION; CATALYTIC ACTIVITY; SUBCELLULAR LOCATION; BIOPHYSICOCHEMICAL PROPERTIES; MUTAGENESIS OF ARG-335; ARG-336; ARG-337; TYR-338 AND TYR-339;

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.