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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P08686: Variant p.Gly376Ser

Steroid 21-hydroxylase
Gene: CYP21A2
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Variant information Variant position: help 376 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LB/B 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 Glycine (G) to Serine (S) at position 376 (G376S, p.Gly376Ser). 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 glycine (G) to small size and polar (S) 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

Polymorphism: help Several non deleterious alleles have been described including CYP21A2*1A, CYP21A2*1B, CYP21A2*2, CYP21A2*3, CYP21A2*4, CYP21A2*5 and CYP21A2*6. Deleterious alleles are mostly generated by recombinations between CYP21A2 and the pseudogene CYP21A1P through gene conversion. This process consists of recombination events that either delete CYP21A2 or transfer deleterious mutations from CYP21A1P to CYP21A2. Additional information on the polymorphism described.
Variant description: help In hyperandrogenism; due to 21-hydroxylase deficiency; almost completely abolished enzyme activity. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 376 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 495 The length of the canonical sequence.
Location on the sequence: help LRPVVPLALPHRTTRPSSIS G YDIPEGTVIIPNLQGAHLDE 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                         LRPVVPLALPHRTTRPSSISGYDIPEGTVIIPNLQGAHLDE

                              LRPVVPLALPHCTTRPSSISGYDIPEGMVVIPNLQGAHLDE

Mouse                         LRPVVPLALPHRATRASSISGYDIPKDMVIIPNIQGANLDE

Rat                           LRPVVPMALPHRATKASSISGYDIPKDTIIIPNIQGANLDE

Pig                           LRPVVPLALPHRATRPSSIFGYDIPEGTVVIPNLQGAHLDE

Bovine                        LRPVVPLALPHRTTRPSSIFGYDIPEGMVVIPNLQGAHLDE

Cat                           LRPVVPLALPHRTTRHSSILGYDIPEGTVVIPNLQGAHLDD

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 1 – 495 Steroid 21-hydroxylase
Binding site 366 – 366
Beta strand 376 – 378



Literature citations
Novel mutations in CYP21 detected in individuals with hyperandrogenism.
Lajic S.; Clauin S.; Robins T.; Vexiau P.; Blanche H.; Bellanne-Chantelot C.; Wedell A.;
J. Clin. Endocrinol. Metab. 87:2824-2829(2002)
Cited for: VARIANTS HYPERANDROGENISM MET-305; SER-376 AND SER-454; CHARACTERIZATION OF VARIANTS HYPERANDROGENISM MET-305; SER-376 AND SER-454;
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.