Enzyme

Science / Chemistry / Enzyme: Protein or protein-based molecules that speed up chemical reactions occurring in living things. Enzymes act as catalysts for a single reaction, converting a specific set of reactants (called substrates) into specific products. Without enzymes life as we know it would be impossible.

Endonuclease Restriction Enzyme

Science / Genetics / Endonuclease Restriction Enzyme: A protein that recognizes specific, short nucleotide sequences and cuts dna at those sites. Bacteria contain over 400 such enzymes that recognize and cut more than 100 different dna sequences. MORE

Restriction Enzyme Cutting Site

Science / Genetics / Restriction Enzyme Cutting Site: A specific nucleotide sequence of dna at which a particular restriction enzyme cuts the dna. Some sites occur frequently in dna (e.g., every several hundred base pairs), others much less frequently (r MORE

Restriction-Enzyme Cutting Site

Science / Genetics / Restriction-Enzyme Cutting Site: A specific nucleotide sequence of dna at which a particular restriction enzyme cuts the dna. Some sites occur frequently in dna (e.g., every several hundred base pairs): others much less frequently (r MORE

Isoenzyme

Science / Genetics / Isoenzyme: An enzyme performing the same function as another enzyme but having a different set of amino acids. The two enzymes may function at different speeds. MORE

Restriction Enzymes

Science / Biology / Restriction Enzymes: A series of enzymes that attach to DNA molecules at specific nucleotide sequences and cut both strands of DNA at those sites. A bacterial enzyme that cuts DNA at a specific recognition sequence. This MORE

Coenzymes

Science / Biology / Coenzymes: Chemicals required by a number of enzymes for proper functioning; also known as enzyme cofactors. MORE

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