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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9H078: Variant p.Arg408Gly

Mitochondrial disaggregase
Gene: CLPB
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Variant information Variant position: help 408 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 Glycine (G) at position 408 (R408G, p.Arg408Gly). 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 glycine (G) 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 MGCA7B; decreased ATP hydrolysis activity; decreased ATP-dependent protein disaggregase activity; not changed mitochondrial respiration. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 408 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 707 The length of the canonical sequence.
Location on the sequence: help TELAKQTAKYMHKDAKKGFI R LDMSEFQERHEVAKFIGSPP 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                         TELAKQTAKYMHKDAKKGFIRLDMSEFQERHEVAKFIGSPP

Mouse                         TELAKQTAKYMHKDAKKGFIRLDMSEFQERHEVAKFIGSPP

Rat                           TELAKQTAKYMHKDAKKGFIRLDMSEFQERHEVAKFIGSPP

Bovine                        TELAKQTAKYMHKDAKKGFIRLDMSEFQERHEVAKFIGSPP
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 37 – 707 Mitochondrial disaggregase
Chain 127 – 707 Mitochondrial disaggregase, cleaved form
Binding site 388 – 388
Mutagenesis 417 – 417 R -> A. No effect on ATPase activity but shows decreased disaggregase activity.
Beta strand 405 – 410



Literature citations
Heterozygous variants of CLPB are a cause of severe congenital neutropenia.
Warren J.T.; Cupo R.R.; Wattanasirakul P.; Spencer D.H.; Locke A.E.; Makaryan V.; Bolyard A.A.; Kelley M.L.; Kingston N.L.; Shorter J.; Bellanne-Chantelot C.; Donadieu J.; Dale D.C.; Link D.C.;
Blood 139:779-791(2022)
Cited for: INVOLVEMENT IN SCN9; VARIANTS SCN9 LYS-388; LYS-496; LYS-557; GLN-561; GLY-561 AND CYS-620; VARIANTS TRP-327 AND HIS-603; CHARACTERIZATION OF VARIANTS SCN9 LYS-496; LYS-557; GLY-561 AND CYS-620; CHARACTERIZATION OF VARIANT HIS-603; CHARACTERIZATION OF VARIANT MGCA7B GLY-408; FUNCTION; SUBCELLULAR LOCATION; CLPB mutations cause 3-methylglutaconic aciduria, progressive brain atrophy, intellectual disability, congenital neutropenia, cataracts, movement disorder.
Wortmann S.B.; Zietkiewicz S.; Kousi M.; Szklarczyk R.; Haack T.B.; Gersting S.W.; Muntau A.C.; Rakovic A.; Renkema G.H.; Rodenburg R.J.; Strom T.M.; Meitinger T.; Rubio-Gozalbo M.E.; Chrusciel E.; Distelmaier F.; Golzio C.; Jansen J.H.; van Karnebeek C.; Lillquist Y.; Luecke T.; Ounap K.; Zordania R.; Yaplito-Lee J.; van Bokhoven H.; Spelbrink J.N.; Vaz F.M.; Pras-Raves M.; Ploski R.; Pronicka E.; Klein C.; Willemsen M.A.; de Brouwer A.P.; Prokisch H.; Katsanis N.; Wevers R.A.;
Am. J. Hum. Genet. 96:245-257(2015)
Cited for: VARIANTS MGCA7B CYS-272; GLY-408; ILE-411; 435-ASP-PRO-436 DELINS ASP-PRO; ARG-486; LYS-501; CYS-567; VAL-591; CYS-617; VAL-646 AND ASN-682; CATALYTIC ACTIVITY; SUBCELLULAR LOCATION; TISSUE SPECIFICITY;
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.