UniProtKB/Swiss-Prot Q93088: Variant p.Arg239Gln

Betaine--homocysteine S-methyltransferase 1
Gene: BHMT
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Variant information Variant position:

239 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant:

LB/B 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 Arginine (R) to Glutamine (Q) at position 239 (R239Q, p.Arg239Gln). 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 basic (R) to medium size and polar (Q) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score:

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:

May decrease risk for coronary artery disease. Any additional useful information about the variant.
Other resources:

Links to websites of interest for the variant.

Variant rs3733890 [ dbSNP | Ensembl ]

Sequence information Variant position:

239 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length:

406 The length of the canonical sequence.
Location on the sequence:

FDPTISLKTVKLMKEGLEAA R LKAHLMSQPLAYHTPDCNKQ 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                         FDPTISLKTVKLMKEGLEAARLKAHLMSQPLAYHTPDCNKQ

Mouse                         FDPSVSLQTVKLMKEGLEAARLKAYLMSQPLAYHTPDCGKQ

Rat                           FDPSTSLQTIKLMKEGLEAARLKAYLMSHALAYHTPDCGKQ

Bovine                        FDPTISLQTVKLMKEGLEAAGLKAHLMSQPLAYHTPDCGKQ

Xenopus laevis                FDPMTCVATVKLMKEGLVAAKVKAHLMTQPLAYHTPDCGKQ

Xenopus tropicalis            FDPMTCIATVKLMKEGLVAAKVKAHLMTQPLAYHTPDCGKQ

Zebrafish                     FDPLTCVKTVAMMKAAVEKAGLKAHYMTQPLAYHTPDCSCQ

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.

Type	Positions	Description
Chain	1 – 406	Betaine--homocysteine S-methyltransferase 1
Domain	11 – 314	Hcy-binding
Modified residue	232 – 232	N6-succinyllysine
Modified residue	241 – 241	N6-succinyllysine
Mutagenesis	220 – 220	D -> A. Has no significant effect on catalytic activity.

Literature citations
Purification, kinetic properties, and cDNA cloning of mammalian betaine-homocysteine methyltransferase.
Garrow T.A.;
J. Biol. Chem. 271:22831-22838(1996)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANT GLN-239; FUNCTION; CATALYTIC ACTIVITY; Investigations of a common genetic variant in betaine-homocysteine methyltransferase (BHMT) in coronary artery disease.
Weisberg I.S.; Park E.; Ballman K.V.; Berger P.; Nunn M.; Suh D.S.; Breksa A.P.; Garrow T.A.; Rozen R.;
Atherosclerosis 167:205-214(2003)
Cited for: VARIANT GLN-239;

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.