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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q96MK3: Variant p.Leu173Arg

Pseudokinase FAM20A
Gene: FAM20A
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Variant information Variant position: help 173 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 Leucine (L) to Arginine (R) at position 173 (L173R, p.Leu173Arg). 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 hydrophobic (L) to large size and basic (R) 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 AI1G; impaired folding of the protein; abolishes ability to activate FAM20C protein kinase activity. Any additional useful information about the variant.


Sequence information Variant position: help 173 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 541 The length of the canonical sequence.
Location on the sequence: help LQLRLEASWVQFHLGINRHG L YSRSSPVVSKLLQDMRHFPT 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                         LQLRLEASWVQFHLGINRHGLYSRSSPVVSKLLQDMRHFPT

Mouse                         LQFRPEASWVQFHLGINSHGLYSRSSLAISKLLHDMRHFPT
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 34 – 541 Pseudokinase FAM20A
Beta strand 172 – 174



Literature citations
A secretory kinase complex regulates extracellular protein phosphorylation.
Cui J.; Xiao J.; Tagliabracci V.S.; Wen J.; Rahdar M.; Dixon J.E.;
Elife 4:0-0(2015)
Cited for: FUNCTION; INTERACTION WITH FAM20C; MUTAGENESIS OF GLN-258; CHARACTERIZATION OF VARIANTS AI1G ARG-173; ASP-331 AND ASN-403; Nephrocalcinosis (enamel renal syndrome) caused by autosomal recessive FAM20A mutations.
Jaureguiberry G.; De la Dure-Molla M.; Parry D.; Quentric M.; Himmerkus N.; Koike T.; Poulter J.; Klootwijk E.; Robinette S.L.; Howie A.J.; Patel V.; Figueres M.L.; Stanescu H.C.; Issler N.; Nicholson J.K.; Bockenhauer D.; Laing C.; Walsh S.B.; McCredie D.A.; Povey S.; Asselin A.; Picard A.; Coulomb A.; Medlar A.J.; Bailleul-Forestier I.; Verloes A.; Le Caignec C.; Roussey G.; Guiol J.; Isidor B.; Logan C.; Shore R.; Johnson C.; Inglehearn C.; Al-Bahlani S.; Schmittbuhl M.; Clauss F.; Huckert M.; Laugel V.; Ginglinger E.; Pajarola S.; Sparta G.; Bartholdi D.; Rauch A.; Addor M.C.; Yamaguti P.M.; Safatle H.P.; Acevedo A.C.; Martelli-Junior H.; dos Santos Netos P.E.; Coletta R.D.; Gruessel S.; Sandmann C.; Ruehmann D.; Langman C.B.; Scheinman S.J.; Ozdemir-Ozenen D.; Hart T.C.; Hart P.S.; Neugebauer U.; Schlatter E.; Houillier P.; Gahl W.A.; Vikkula M.; Bloch-Zupan A.; Bleich M.; Kitagawa H.; Unwin R.J.; Mighell A.; Berdal A.; Kleta R.;
Nephron Physiol. 122:1-6(2012)
Cited for: VARIANT AI1G ARG-173;
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.