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UniProtKB/Swiss-Prot Q01432: Variant p.Met324Thr

AMP deaminase 3
Gene: AMPD3
Variant information

Variant position:  324
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 Methionine (M) to Threonine (T) at position 324 (M324T, p.Met324Thr).
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 hydrophobic (M) to medium size and polar (T)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -1
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 AMPDDE.
Any additional useful information about the variant.

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



Sequence information

Variant position:  324
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  767
The length of the canonical sequence.

Location on the sequence:   PHRDFYNVRKVDTHIHAAAC  M NQKHLLRFIKHTYQTEPDRT
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                         PHRDFYNVRKVDTHIHAAACMNQKHLLRFIKHTYQTEPDRT

Mouse                         PHRDFYNVRKVDTHIHAAACMNQKHLLRFIKHTYQTEPDRT

Rat                           PHRDFYNVRKVDTHIHAAACMNQKHLLRFIKYTYQTEPDRT

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 – 767 AMP deaminase 3
Metal binding 317 – 317 Zinc; catalytic
Metal binding 319 – 319 Zinc; catalytic
Binding site 319 – 319 Substrate
Alternative sequence 208 – 767 Missing. In isoform 1A.


Literature citations

Molecular basis for human erythrocyte AMP deaminase deficiency: screening for the major point mutation and identification of other mutations.
Yamada Y.; Goto H.; Murase T.; Ogasawara N.;
Hum. Mol. Genet. 3:2243-2245(1994)
Cited for: VARIANTS AMPDDE LYS-310; VAL-320; THR-324; CYS-331; CYS-402; ARG-450 AND LEU-585;

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.