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2.1.1.5: betaine-homocysteine S-methyltransferase

This is an abbreviated version!
For detailed information about betaine-homocysteine S-methyltransferase, go to the full flat file.

Word Map on EC 2.1.1.5

Reaction

betaine
+
L-homocysteine
=
dimethylglycine
+
L-methionine

Synonyms

betaine homocysteine methyltransferase, betaine homocysteine methyltransferase-1, betaine homocysteine S-methyltransferase, betaine-homocysteine methyltransferase, betaine-homocysteine S-methyltransferase, betaine-homocysteine S-methyltransferase 2, betaine-homocysteine S-methyltransferase-2, betaine-homocysteine transmethylase, betaine:homocysteine methyltransferase, betaine:homocysteine S-methyltransferase, BHMT, BHMT-1, BHMT-2, BHMT1, BHMT2, methyltransferase, betaine-homocysteine

ECTree

     2 Transferases
         2.1 Transferring one-carbon groups
             2.1.1 Methyltransferases
                2.1.1.5 betaine-homocysteine S-methyltransferase

General Stability

General Stability on EC 2.1.1.5 - betaine-homocysteine S-methyltransferase

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GENERAL STABILITY
ORGANISM
UNIPROT
LITERATURE
divalent cations and 2-mercaptoethanol do not stabilize during purification
-
glycerol does not stabilize
-
lyophilization inactivates
-
mechanism of unfolding by urea includes two intermediate states, a tetramer and a monomer. Dissociation is concomitant with alterations in the dimerization arm and the loop connecting the C-terminal helix, and intermediate conformations originate from perturbations in these structures
-
partial digestion of ligand-free enzyme with trypsin produces two large peptides, excising a seven residue peptide with loop L2. Carboxybutylhomocysteine but not methionine slows proteolysis by trypsin
substrates stabilize during purification
-