UniProtKB/Swiss-Prot Q9HAT2: Variant p.Lys400Asn

Sialate O-acetylesterase
Gene: SIAE
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Variant information Variant position:

400 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 Asparagine (N) at position 400 (K400N, p.Lys400Asn). 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 large size and basic (K) to medium size and polar (N) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score:

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
Variant description:

Rare variant found in a patient with Crohn disease; probably not involved in disease susceptibility; the mutant protein has normal activity. Any additional useful information about the variant.
Other resources:

Links to websites of interest for the variant.

Variant rs766047951 [ dbSNP | Ensembl ]

Sequence information Variant position:

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

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

DKQTVAYRLHLGARALAYGE K NLTFEGPLPEKIELLAHKGL 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                         DKQTVAYRLHLGARALAYGEKNLTFEGPLPEKIELLAHKGL

Mouse                         DKQTVAYRLHLGARAVAYGEKNLTFQGPLPKKIELLASNGL

Rat                           DKQTVAYRLHLGARAVAYGEKNLTFQGPLPKKIELLARNEL

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	24 – 523	Sialate O-acetylesterase
Glycosylation	401 – 401	N-linked (GlcNAc...) asparagine

Literature citations
Functionally defective germline variants of sialic acid acetylesterase in autoimmunity.
Surolia I.; Pirnie S.P.; Chellappa V.; Taylor K.N.; Cariappa A.; Moya J.; Liu H.; Bell D.W.; Driscoll D.R.; Diederichs S.; Haider K.; Netravali I.; Le S.; Elia R.; Dow E.; Lee A.; Freudenberg J.; De Jager P.L.; Chretien Y.; Varki A.; Macdonald M.E.; Gillis T.; Behrens T.W.; Bloch D.; Collier D.; Korzenik J.; Podolsky D.K.; Hafler D.; Murali M.; Sands B.; Stone J.H.; Gregersen P.K.; Pillai S.;
Nature 466:243-247(2010)
Cited for: SUBCELLULAR LOCATION; FUNCTION; CATALYTIC ACTIVITY; VARIANTS AIS6 PHE-196; ARG-212; TRP-230; GLY-266; PRO-309; CYS-349; HIS-393; SER-404 AND CYS-479; VARIANTS GLY-3; SER-33; HIS-62; SER-64; ARG-71; VAL-89; LYS-161; MET-312; HIS-314; ASN-400; ARG-447; ILE-456 AND ARG-462; CHARACTERIZATION OF VARIANTS AIS6 PHE-196; ARG-212; TRP-230; GLY-266; PRO-309; CYS-349; HIS-393; SER-404 AND CYS-479; CHARACTERIZATION OF VARIANTS GLY-3; SER-33; HIS-62; SER-64; VAL-89; LYS-161; MET-312; HIS-314; ASN-400; ARG-447; ILE-456 AND ARG-462;

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.