molecules are known as substrates before an enzyme converts them.
molecules are known as substrates before an enzyme converts them.
what are molecules known as before an enzyme converts them?
substrates
enzymes are macromolecular biological catalysts that accelerate chemical reactions. the molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products. almost all metabolic processes in the cell need enzyme catalysis in order to occur at rates fast enough to sustain life. metabolic pathways depend upon enzymes to catalyze individual steps. the study of enzymes is called "enzymology" and a new field of pseudoenzyme analysis has recently grown up, recognising that during evolution, some enzymes have lost the ability to carry out biological catalysis, which is often reflected in their amino acid sequences and unusual 'pseudocatalytic' properties.
enzyme
bullet::::- the "mat1a" gene provides instructions for producing the enzyme methionine adenosyltransferase. this enzyme converts methionine into a compound called s-adenosylmethionine.









































bullet::::- the "gnmt" gene provides instructions for making the enzyme glycine n-methyltransferase. this enzyme starts the next step in the process, converting s-adenosylmethionine to a compound called s-adenosyl homocysteine.









































bullet::::- the "ahcy" gene provides instructions for producing the enzyme s-adenosylhomocysteine hydrolase. this enzyme converts the s-adenosyl homocysteine into the compound homocysteine. homocysteine may be converted back to methionine or into another amino acid, cysteine.
hypermethioninemia