<prompt> Which coenzyme is responsible for carboxylation reaction?BiotinFADNADHThiamine pyrophosphate  <response>: Ans. is a i.e. biotin Biotin is the coenzyme required for enzymes that are involved in carboxylation reactions, e.g. acetyl-CoA carboxylase and pyruvate carboxylase. Most coenzymes are derived from vitamins. Below is given list of vitamins, derived coenzymes and the reactions they are involved in: VitaminCoenzymeReaction typeBi ThiamineTPP thiamine pyrophosphateOxidative decarboxylation, transketolationB2 RiboflavinFMN, FADOxidationReductionB3PantothenateCoA-Coenzyme AAcyl group transferB6 PyridoxinePLP Pyridoxal phosphateTransfer of groups to and from amino acids Transamination,Deamination, Condensation, DecarboxylationBj2 Cobalamin5-deoxyadenosyl cobalamin,methylcobalaminIsomerization of methylmalonyl, synthesis of mehionineNiacinNAD, NADPOxidationReductionFolic acidTetrahydrofolateOne carbon group transferBiotinBiotinCarboxylationVitamin KVitamin KCarboxylation of glutamic acid residues 