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UniProtKB/Swiss-Prot P35914: Variant p.Phe192Ser

Hydroxymethylglutaryl-CoA lyase, mitochondrial
Gene: HMGCL
Variant information

Variant position:  192
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 Phenylalanine (F) to Serine (S) at position 192 (F192S, p.Phe192Ser).
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 large size and aromatic (F) to small size and polar (S)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -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:  In HMGCLD; activity lower than 5% respect to the wild-type.
Any additional useful information about the variant.



Sequence information

Variant position:  192
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  325
The length of the canonical sequence.

Location on the sequence:   LGCPYEGKISPAKVAEVTKK  F YSMGCYEISLGDTIGVGTPG
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                         LGCPYEGKISPAKVAEVTKKFYSMGCYEISLGDTIGVGTPG

Mouse                         LGCPYEGKVSPAKVAEVAKKLYSMGCYEISLGDTIGVGTPG

Rat                           LGCPYEGKVSPAKVAEVAKKLYSMGCYEISLGDTIGVGTPG

Bovine                        LGCPYEGKISPAKVAEVTKKLYSMGCYEISLGDTIGVGTPG

Chicken                       LGCPYEGNISAAKVAEVSKKMYSMGCYEISLGDRIGIGTPG

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 28 – 325 Hydroxymethylglutaryl-CoA lyase, mitochondrial
Domain 33 – 300 Pyruvate carboxyltransferase
Modified residue 179 – 179 N6-acetyllysine; alternate
Modified residue 179 – 179 N6-succinyllysine; alternate
Alternative sequence 188 – 250 Missing. In isoform 3.
Mutagenesis 204 – 204 D -> A. Reduced activity, and reduced affinity for metal cofactor and substrate.
Helix 182 – 194


Literature citations

Ten novel HMGCL mutations in 24 patients of different origin with 3-hydroxy-3-methyl-glutaric aciduria.
Menao S.; Lopez-Vinas E.; Mir C.; Puisac B.; Gratacos E.; Arnedo M.; Carrasco P.; Moreno S.; Ramos M.; Gil M.C.; Pie A.; Ribes A.; Perez-Cerda C.; Ugarte M.; Clayton P.T.; Korman S.H.; Serra D.; Asins G.; Ramos F.J.; Gomez-Puertas P.; Hegardt F.G.; Casals N.; Pie J.;
Hum. Mutat. 30:E520-E529(2009)
Cited for: VARIANTS HMGCLD LYS-37; GLY-42; PHE-142; TYR-174; SER-192; PHE-200 AND ARG-233; CHARACTERIZATION OF VARIANTS HMGCLD LYS-37; PHE-142; TYR-174; SER-192 AND PHE-200;

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.