A formyl functional group consists of a carbonyl bonded to hydrogen. The molecule consists of a benzene ring with an formyl and a methoxy group. It decomposes by reacting with oxygen and hydroxyl radical to form formyl cyanide and formaldehyde. Benzaldehyde (CHCHO) is an organic compound consisting of a benzene ring with a formyl substituent. The aldehyde group (or formyl group) is colored red. The addition of the formyl group to methionine is catalyzed by the enzyme methionyl-tRNA formyltransferase. G protein coupled receptors (see also formyl peptide receptor 3). PurT GAR transformylase requires formate as the formyl donor and ATP for catalysis. Gossypol is a type of aldehyde, meaning that it has a formyl group. The formyl proton itself does not readily undergo deprotonation. Other chemotactic signals such as formyl Met-Leu-Phe (fMLF) may also guide spermatozoa. When reacted with carbon nucleophiles, "N","N"-dimethylformamide (DMF) can be used to introduce a formyl group. The helium formyl cation, HeHCO is a linear molecule. Presumably other esters such as nicotinyl, benzoyl, formyl, cinnimoyl &c.can be produced. This category consists of transfers of methyl, hydroxymethyl, formyl, carboxy, carbamoyl, and amido groups.