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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P05186: Variant p.Asp294Ala

Alkaline phosphatase, tissue-nonspecific isozyme
Gene: ALPL
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Variant information Variant position: help 294 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help 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: help From Aspartate (D) to Alanine (A) at position 294 (D294A, p.Asp294Ala). 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 medium size and acidic (D) to small size and hydrophobic (A) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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: help In HOPS; reduced alkaline phosphatase toward diphosphate and pyridoxal 5'-phosphate. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 294 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 524 The length of the canonical sequence.
Location on the sequence: help ELLTLDPHNVDYLLGLFEPG D MQYELNRNNVTDPSLSEMVV 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                         ELLTLDPHNVDYLLGLFEPGDMQYELNRNNVTDPSLSEMVV

Mouse                         ELLALDPSRVDYLLGLFEPGDMQYELNRNNLTDPSLSEMVE

Rat                           ELLALDPSRVDYLLGLFEPGDMQYELNRNNLTDPSLSEMVE

Bovine                        DLLALDPHSVDYLLGLFEPGDMQYELNRNNATDPSLSEMVE

Cat                           ELLTLDPYGVDYLLGLFEPGDMQYELNRNSTTDPSLSEMVE

Chicken                       ELLALNVSRVDFLLGLFEPGDMVYELDRNNETDPSLSEMVA
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 18 – 501 Alkaline phosphatase, tissue-nonspecific isozyme
Binding site 290 – 290
Binding site 291 – 291
Binding site 306 – 306
Glycosylation 303 – 303 N-linked (GlcNAc...) asparagine
Mutagenesis 290 – 290 F -> A. Abolished alkaline phosphatase activity.
Mutagenesis 291 – 291 E -> A. Reduced alkaline phosphatase activity.
Mutagenesis 306 – 306 D -> A. Abolished alkaline phosphatase activity.
Beta strand 292 – 294



Literature citations
Different missense mutations at the tissue-nonspecific alkaline phosphatase gene locus in autosomal recessively inherited forms of mild and severe hypophosphatasia.
Henthorn P.S.; Raducha M.; Fedde K.N.; Lafferty M.A.; Whyte M.P.;
Proc. Natl. Acad. Sci. U.S.A. 89:9924-9928(1992)
Cited for: VARIANTS HOPS VAL-33; CYS-71; PRO-71; LYS-191; PRO-207; ALA-294; VAL-378 AND HIS-436; VARIANT HIS-263; Kinetic characterization of hypophosphatasia mutations with physiological substrates.
Di Mauro S.; Manes T.; Hessle L.; Kozlenkov A.; Pizauro J.M.; Hoylaerts M.F.; Millan J.L.;
J. Bone Miner. Res. 17:1383-1391(2002)
Cited for: VARIANTS HOPS VAL-33; CYS-71; PRO-71; THR-111; VAL-132; THR-177; THR-179; GLY-191; LYS-191; TRP-223; ALA-294; ASP-334; VAL-378; ILE-382 AND ARG-456; VARIANT HPPI LYS-298; CHARACTERIZATION OF VARIANTS HOPS VAL-33; CYS-71; PRO-71; THR-111; VAL-132; THR-177; THR-179; GLY-191; LYS-191; TRP-223; ALA-294; ASP-334; VAL-378; ILE-382 AND ARG-456; CHARACTERIZATION OF VARIANT HPPI LYS-298; FUNCTION; CATALYTIC ACTIVITY; Denaturing gradient gel electrophoresis analysis of the tissue nonspecific alkaline phosphatase isoenzyme gene in hypophosphatasia.
Mumm S.; Jones J.; Finnegan P.; Henthorn P.S.; Podgornik M.N.; Whyte M.P.;
Mol. Genet. Metab. 75:143-153(2002)
Cited for: VARIANTS HOPS SER-51; HIS-71; THR-111; MET-128; HIS-134; HIS-136; THR-176; LYS-191; GLN-223; TRP-223; SER-246; ALA-294; PRO-299; PHE-327 DEL; ARG-339; THR-348; VAL-378; MET-414; ASP-426 AND LYS-476; VARIANTS HIS-263 AND ALA-522; Characterization of 11 novel mutations in the tissue non-specific alkaline phosphatase gene responsible for hypophosphatasia and genotype-phenotype correlations.
Brun-Heath I.; Taillandier A.; Serre J.-L.; Mornet E.;
Mol. Genet. Metab. 84:273-277(2005)
Cited for: VARIANTS HOPS VAL-33; HIS-136; GLN-223; TRP-223; HIS-272; THR-292; ALA-294; THR-295; ASP-297; ASP-334 AND ALA-411; CHARACTERIZATION OF VARIANTS HOPS VAL-33; HIS-272; THR-292; THR-295; ASP-297 AND ALA-411;
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.