UniProtKB/Swiss-Prot P08686: Variant p.Lys99Arg

Steroid 21-hydroxylase
Gene: CYP21A2
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Variant information Variant position:

99 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant:

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:

From Lysine (K) to Arginine (R) at position 99 (K99R, p.Lys99Arg). 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 large size and basic. 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
Polymorphism:

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.
Other resources:

Links to websites of interest for the variant.

Variant rs1268071078 [ dbSNP | Ensembl ]

Sequence information Variant position:

99 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length:

495 The length of the canonical sequence.
Location on the sequence:

EEAMVKKWADFAGRPEPLTY K LVSRNYPDLSLGDYSLLWKA 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                         EEAMVKKWADFAGRPEPLTYKLVSRNYPDLSLGDYSLLWKA

                              EEAMVRKWVDFAGRPQTPSYKLVSLHHQDLSLGDYSLLWKA

Mouse                         EEALIQKWVDFAGRPHMLNGKM----DLDLSLGDYSLMWKA

Rat                           EEALIQKWVDFAGRPQILDGKM----NFDLSMGDYSLTWKA

Pig                           EEALVRKWVDFAGRPQIPSYKLASQHCPDISLGDYSLFWKA

Bovine                        EEAMIRKWVDFAGRPQIPSYKLVSQRCQDISLGDYSLLWKA

Cat                           EEALIRRWVDFAGRPQMPSYKLVSQHYQDLSLGDYSLLWKA

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.

Type	Positions	Description
Chain	1 – 495	Steroid 21-hydroxylase
Binding site	92 – 92
Helix	96 – 100

Literature citations
Molecular genetic analysis of patients carrying steroid 21-hydroxylase deficiency in the Mexican population: identification of possible new mutations and high prevalence of apparent germ-line mutations.
Ordonez-Sanchez M.L.; Ramirez-Jimenez S.; Lopez-Gutierrez A.U.; Riba L.; Gamboa-Cardiel S.; Cerrillo-Hinojosa M.; Altamirano-Bustamante N.; Calzada-Leon R.; Robles-Valdes C.; Mendoza-Morfin F.; Tusie-Luna M.T.;
Hum. Genet. 102:170-177(1998)
Cited for: VARIANTS ARG-99; LYS-103; GLU-184 AND ASN-494;

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.