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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9HCC0: Variant p.Val375Phe

Methylcrotonoyl-CoA carboxylase beta chain, mitochondrial
Gene: MCCC2
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Variant information Variant position: help 375 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 Valine (V) to Phenylalanine (F) at position 375 (V375F, p.Val375Phe). 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 (V) to large size and aromatic (F) 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 MCC2D. Any additional useful information about the variant.


Sequence information Variant position: help 375 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 563 The length of the canonical sequence.
Location on the sequence: help LVTGFARIFGYPVGIVGNNG V LFSESAKKGTHFVQLCCQRN 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                         LVTGFARIFGYPVGIVGNNGVLFSESAKKGTHFVQLCCQRN

Mouse                         LVTGFARIFGYPVGIIGNNGVLFSESAKKGAHFVQLCCQRN

Rat                           LVTGFARIFGYPVGIIGNNGVLFSESAKKGAHFVQLCCQRN

Caenorhabditis elegans        LVTGFATIYGQRVGILANNGVLFAESAMKGSHFIELCCQRK

Drosophila                    LVCGFAKLYGHTVGIVGNNGVLFSESALKGAHFIQLCAQRK

Slime mold                    LICGFARVHGMPVGIIANNGILFSESAVKGAHFIELCNQRG

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 23 – 563 Methylcrotonoyl-CoA carboxylase beta chain, mitochondrial
Domain 309 – 555 CoA carboxyltransferase C-terminal
Region 49 – 555 Carboxyltransferase



Literature citations
3-Methylcrotonyl-CoA carboxylase deficiency: mutation analysis in 28 probands, 9 symptomatic and 19 detected by newborn screening.
Dantas M.F.; Suormala T.; Randolph A.; Coelho D.; Fowler B.; Valle D.; Baumgartner M.R.;
Hum. Mutat. 26:164-174(2005)
Cited for: VARIANTS MCC2D GLN-99; TRP-155; GLN-155; TYR-190; THR-268; ARG-282; ARG-310; PHE-375 AND VAL-456; CHARACTERIZATION OF VARIANTS TYR-190 AND ARG-352; 3-methylcrotonyl-CoA carboxylase deficiency: clinical, biochemical, enzymatic and molecular studies in 88 individuals.
Gruenert S.C.; Stucki M.; Morscher R.J.; Suormala T.; Buerer C.; Burda P.; Christensen E.; Ficicioglu C.; Herwig J.; Koelker S.; Moeslinger D.; Pasquini E.; Santer R.; Schwab K.O.; Wilcken B.; Fowler B.; Yue W.W.; Baumgartner M.R.;
Orphanet J. Rare Dis. 7:31-54(2012)
Cited for: VARIANTS MCC2D PHE-39; GLN-99; PHE-101; GLY-118 DEL; PHE-131; ASN-146; THR-152; TRP-155; ARG-167; ASP-169; LEU-173; ARG-190; TYR-190; CYS-193; HIS-193; ASN-200; THR-218; VAL-218; GLU-220; LEU-224; ASP-237; LEU-266; TYR-280; ARG-282; ARG-310; MET-339; VAL-340; ARG-352; PHE-355; PHE-375; THR-403; LEU-434; VAL-456; ARG-475; ARG-477; ARG-517; SER-520; GLY-523 AND GLU-555; CHARACTERIZATION OF VARIANTS MCC2D PHE-39; GLY-118 DEL; ASN-146; ARG-282; LEU-434; VAL-456; ARG-475 AND GLY-523;
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.