Home  |  Contact

UniProtKB/Swiss-Prot P22033: Variant p.Gly717Val

Methylmalonyl-CoA mutase, mitochondrial
Gene: MMUT
Variant information

Variant position:  717
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  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:  From Glycine (G) to Valine (V) at position 717 (G717V, p.Gly717Val).
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:  Change from glycine (G) to medium size and hydrophobic (V)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -3
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:  In MMAM; mut-; no effect on protein abundance; interfers with the binding of the cofactor to the apoenzyme; decreased methylmalonyl-CoA mutase activity; strong decreased affinity for adenosylcob(III)alamin; decreased thermodynamic stability.
Any additional useful information about the variant.

Other resources:  
Links to websites of interest for the variant.



Sequence information

Variant position:  717
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  750
The length of the canonical sequence.

Location on the sequence:   ILVMCGGVIPPQDYEFLFEV  G VSNVFGPGTRIPKAAVQVLD
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: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         ILVMCGGVIPPQDYEFLFEVGVSNVFGPGTRIPKAAVQVLD

Mouse                         ILVMCGGVIPPQDYEFLYEVGVSNVFGPGTRIPRAAVQVLD

Pig                           ILVMCGGVIPPQDYEFLFEVGVSNVFGPGTRIPKAAVQVLN

Bovine                        ILVMCGGVIPPQDYEFLFEVGVSNVFGPGTRIPKAAVQVLD

Caenorhabditis elegans        ILVVAGGVIPPQDYKELYDAGVALVFGPGTRLPACANQILE

Sequence annotation in neighborhood:  
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 33 – 750 Methylmalonyl-CoA mutase, mitochondrial
Domain 614 – 746 B12-binding


Literature citations

Phenotype of disease in three patients with identical mutations in methylmalonyl CoA mutase.
Crane A.M.; Martin L.S.; Valle D.; Ledley F.D.;
Hum. Genet. 89:259-264(1992)
Cited for: VARIANT MMAM VAL-717; VARIANT VAL-671;

Cloning and expression of a mutant methylmalonyl coenzyme A mutase with altered cobalamin affinity that causes mut- methylmalonic aciduria.
Crane A.M.; Jansen R.; Andrews E.R.; Ledley F.D.;
J. Clin. Invest. 89:385-391(1992)
Cited for: VARIANT MMAM VAL-717; VARIANT VAL-671; FUNCTION; CATALYTIC ACTIVITY;

Expression and kinetic characterization of methylmalonyl-CoA mutase from patients with the mut- phenotype: evidence for naturally occurring interallelic complementation.
Janata J.; Kogekar N.; Fenton W.A.;
Hum. Mol. Genet. 6:1457-1464(1997)
Cited for: VARIANTS MMAM VAL-94; ASN-231; HIS-369; ARG-623; ARG-678; TRP-694 AND VAL-717;

A common mutation among blacks with mut- methylmalonic aciduria.
Adjalla C.E.; Hosack A.R.; Matiaszuk N.V.; Rosenblatt D.S.;
Hum. Mutat. Suppl. 1:S248-S250(1998)
Cited for: VARIANT MMAM VAL-717; VARIANT VAL-671;

Spectrum of mutations in mut methylmalonic acidemia and identification of a common Hispanic mutation and haplotype.
Worgan L.C.; Niles K.; Tirone J.C.; Hofmann A.; Verner A.; Sammak A.; Kucic T.; Lepage P.; Rosenblatt D.S.;
Hum. Mutat. 27:31-43(2006)
Cited for: VARIANTS MMAM LEU-86; GLU-87; HIS-93; ARG-94; VAL-94; ARG-95; ARG-105; CYS-108; GLY-108; HIS-108; SER-145; SER-174; VAL-186; LYS-189; GLU-191; GLU-197; ARG-203; CYS-215; SER-215; HIS-218; TYR-219; GLN-228; ILE-230; ASN-231; ASN-262; TYR-265; SER-281; GLU-291; SER-305; PHE-306; VAL-312; CYS-316; THR-324; LEU-346 DEL; ARG-347; TYR-350; CYS-369; HIS-369; PRO-370; GLU-377; HIS-383; PRO-383; ARG-386; ASN-386; HIS-388; SER-389 DEL; ILE-412 DEL; ARG-426; ASP-427; PRO-518; TYR-560; ARG-566; SER-573; ARG-615; CYS-616; ARG-623; GLU-630; GLY-633; ARG-637; ARG-642; ARG-678; ARG-685; TRP-694; LYS-700; ARG-703 AND VAL-717; VARIANTS VAL-69; THR-499; HIS-532 AND VAL-671;

Functional characterization and categorization of missense mutations that cause methylmalonyl-CoA mutase (MUT) deficiency.
Forny P.; Froese D.S.; Suormala T.; Yue W.W.; Baumgartner M.R.;
Hum. Mutat. 35:1449-1458(2014)
Cited for: CHARACTERIZATION OF VARIANTS MMAM LEU-86; CYS-100; GLU-191; HIS-218; TYR-219; ASN-231; CYS-316; PHE-328; PHE-344; SER-366; HIS-369; ILE-387; ARG-426; SER-573; LEU-615; THR-615; GLY-633; ASP-648; LEU-694; TRP-694; LYS-700; VAL-717 AND PHE-736; FUNCTION; CATALYTIC ACTIVITY; BIOPHYSICOCHEMICAL PROPERTIES;

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.