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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9UHE5: Variant p.Phe143Ser

N-acetyltransferase 8
Gene: NAT8
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Variant information Variant position: help 143 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help 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: help From Phenylalanine (F) to Serine (S) at position 143 (F143S, p.Phe143Ser). 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 large size and aromatic (F) to small size and polar (S) 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 No effect on the cysteine S-conjugate N-acetyltransferase activity. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 143 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 227 The length of the canonical sequence.
Location on the sequence: help GALPVDDPTLREKRLQLFHL F VDSEHRRQGIAKALVRTVLQ 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                         GALPVDDPTLREKRLQLFHLFVDSEHRRQGIAKALVRTVLQ

Mouse                         AARPVKDPPLGRKQLQLFRLSVSSQHRGQGIAKALTRTVLQ

Rat                           GALPVKDPPSGRKQLQLFRLSVSSQHRGQGIAKALVRTVLQ

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 1 – 227 N-acetyltransferase 8
Topological domain 64 – 227 Lumenal
Domain 61 – 220 N-acetyltransferase
Mutagenesis 149 – 149 R -> K. Loss of the cysteine S-conjugate N-acetyltransferase activity. No effect on protein expression.



Literature citations
Overexpression of camello, a member of a novel protein family, reduces blastomere adhesion and inhibits gastrulation in Xenopus laevis.
Popsueva A.E.; Luchinskaya N.N.; Ludwig A.V.; Zinovjeva O.Y.; Poteryaev D.A.; Feigelman M.M.; Ponomarev M.B.; Berekelya L.; Belyavsky A.V.;
Dev. Biol. 234:483-496(2001)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANT SER-143; GLA, a kidney specific membrane protein highly expressed in renal tubular cells; possible involvement in the chronic renal failure.
Yamamoto H.; Takahashi M.; Yoshimoto M.; Hara H.; Kitamura K.; Nakagawa J.;
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANT SER-143; Cloning of human full open reading frames in Gateway(TM) system entry vector (pDONR201).
Ebert L.; Schick M.; Neubert P.; Schatten R.; Henze S.; Korn B.;
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANT SER-143; Molecular identification of NAT8 as the enzyme that acetylates cysteine S-conjugates to mercapturic acids.
Veiga-da-Cunha M.; Tyteca D.; Stroobant V.; Courtoy P.J.; Opperdoes F.R.; Van Schaftingen E.;
J. Biol. Chem. 285:18888-18898(2010)
Cited for: FUNCTION; CATALYTIC ACTIVITY; BIOPHYSICOCHEMICAL PROPERTIES; SUBCELLULAR LOCATION; PATHWAY; CHARACTERIZATION OF VARIANTS LYS-104 AND SER-143; MUTAGENESIS OF ARG-149;
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.