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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P55072: Variant p.Arg155Ser

Transitional endoplasmic reticulum ATPase
Gene: VCP
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Variant information Variant position: help 155 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 Arginine (R) to Serine (S) at position 155 (R155S, p.Arg155Ser). 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 basic (R) to small size and polar (S) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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: help In IBMPFD1; impaired autophagic function. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 155 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 806 The length of the canonical sequence.
Location on the sequence: help LKPYFLEAYRPIRKGDIFLV R GGMRAVEFKVVETDPSPYCI 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                         LKPYFLEAYRPIRKGDIFLVRGGMRAVEFKVVETDPSPYCI

Mouse                         LKPYFLEAYRPIRKGDIFLVRGGMRAVEFKVVETDPSPYCI

Rat                           LKPYFLEAYRPIRKGDIFLVRGGMRAVEFKVVETDPSPYCI

Pig                           LKPYFLEAYRPIRKGDIFLVRGGMRAVEFKVVETDPSPYCI

Bovine                        LKPYFLEAYRPIRKGDIFLVRGGMRAVEFKVVETDPSPYCI

Xenopus laevis                LKPYFLEAYRPIRKGDIFLVRGGMRAVEFKVVETDPSPYCI

Xenopus tropicalis            LKPYFLEAYRPIRKGDIFLVRGGMRAVEFKVVETDPSPYCI

Zebrafish                     LKPYFLEAYRPIRKGDIFLVRGGMRAVEFKVVETDPSPYCI

Drosophila                    LKPYFLEAYRPIHMGDNFIVRAAMRPIEFKVVLTDPEPYCI
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 2 – 806 Transitional endoplasmic reticulum ATPase
Mutagenesis 140 – 140 L -> D. Severely reduced binding to DERL1.



Literature citations
VCP/p97 is essential for maturation of ubiquitin-containing autophagosomes and this function is impaired by mutations that cause IBMPFD.
Tresse E.; Salomons F.A.; Vesa J.; Bott L.C.; Kimonis V.; Yao T.P.; Dantuma N.P.; Taylor J.P.;
Autophagy 6:217-227(2010)
Cited for: CHARACTERIZATION OF VARIANTS IBMPFD1 HIS-155; SER-155 AND GLU-232; MUTAGENESIS OF GLU-305 AND GLU-578; FUNCTION;
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.