The Chemical Reactions and Pathways Resulting in the Formation of Any of the Menaquinones. Structurally Menaquinones Consist of a Methylated Naphthoquinone Ring Structure and Side Chains Composed of a Variable Number of Unsaturated Isoprenoid Residues. Menaquinones That Have Vitamin K Activity and Are Known As Vitamin K2.
Catalysis of a Biochemical Reaction At Physiological Temperatures. in Biologically Catalyzed Reactions the Reactants Are Known As Substrates and the Catalysts Are Naturally Occurring Macromolecular Substances Known As Enzymes. Enzymes Possess Specific Binding Sites For Substrates and Are Usually Composed Wholly or Largely of Protein But RNA That Has Catalytic Activity (ribozyme) Is Often Also Regarded As Enzymatic.
Catalysis of the Transfer of a Group E.g. a Methyl Group Glycosyl Group Acyl Group Phosphorus Containing or Other Groups From One Compound (generally Regarded As the Donor) to Another Compound (generally Regarded As the Acceptor). Transferase Is the Systematic Name For Any Enzyme of EC Class 2.
Interacting Selectively and Non Covalently with Thiamine Pyrophosphate the Diphosphoric Ester of Thiamine. Acts As a Coenzyme of Several (de)carboxylases Transketolases and Alpha Oxoacid Dehydrogenases.