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UniProtKB/Swiss-Prot P21549: Variant p.Cys253Arg

Alanine--glyoxylate aminotransferase
Gene: AGXT
Variant information

Variant position:  253
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 Cysteine (C) to Arginine (R) at position 253 (C253R, p.Cys253Arg).
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 medium size and polar (C) to large size and basic (R)
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 HP1; when associated with L-11 and M-340 on the minor AGXT allele; results in loss of alanine--glyoxylate aminotransferase activity.
Any additional useful information about the variant.

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

Sequence information

Variant position:  253
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  392
The length of the canonical sequence.

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                         RKTKPFSFYLDIKWLANFWG-----CDDQ---------PRMYHHTIPVISLYSLR

Mouse                         RKTKPVSFYTDITYLAKLWG-----CEGE---------TRV

Rat                           RKTKPVSFYTDITYLSKLWG-----CEGK---------TRV

Rabbit                        RKTKPFSFYMDVQLLANIWG-----CDGK---------PRM

Cat                           RKTKPVSFYLDMKWLANIWG-----CDGK---------PRI


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.

Chain 1 – 392 Alanine--glyoxylate aminotransferase
Modified residue 234 – 234 N6-acetyllysine

Literature citations

Implications of genotype and enzyme phenotype in pyridoxine response of patients with type I primary hyperoxaluria.
Monico C.G.; Olson J.B.; Milliner D.S.;
Am. J. Nephrol. 25:183-188(2005)
Cited for: VARIANTS HP1 VAL-139 DEL; ARG-156; LEU-158; ARG-190; GLU-201; LEU-233; THR-244 AND ARG-253; VARIANT ASN-9;

Selected exonic sequencing of the AGXT gene provides a genetic diagnosis in 50% of patients with primary hyperoxaluria type 1.
Williams E.; Rumsby G.;
Clin. Chem. 53:1216-1221(2007)
Cited for: VARIANTS HP1 CYS-36; ARG-41; GLU-41; PRO-150; ILE-152; ARG-156; LEU-158; CYS-161; SER-161; PRO-166; ARG-170; TYR-173; CYS-233; HIS-233; THR-244 AND ARG-253; VARIANT ASN-9; CHARACTERIZATION OF VARIANTS HP1 CYS-36; GLU-41; PRO-150; ARG-156; LEU-158; CYS-161; SER-161; PRO-166; TYR-173; CYS-233; HIS-233 AND ARG-253; CHARACTERIZATION OF VARIANT ASN-9;

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.