Function
Involved in the caffeine degradation, which is the essential first step for assimilating the carbon and nitrogen in caffeine. Catalyzes the N1-demethylation of caffeine to produce theobromine and formaldehyde. Also catalyzes the N1-demethylation of theophylline, paraxanthine, and 1-methylxanthine to 3-methylxanthine, 7-methylxanthine, and xanthine, respectively. NADH is the preferred substrate.
Sequence
MEQAIINDEREYLRHFWHPVCTVTELEKAHPSSLGPLAVKLLNEQLVVAKLGDEYVAMRDRCAHRSAKLSLGTVSGNRLQCPYHGWQYDTHGACQLVPACPNSPIPNKAKVDRFDCEERYGLIWIRLDSSFDCTEIPYFSAANDPRLRIVIQEPYWWDATAERRWENFTDFSHFAFIHPGTLFDPNNAEPPIVPMDRFNGQFRFVYDTPEDMAVPNQAPIGSFSYTCSMPFAINLEVSKYSSSSLHVLFNVSCPVDSHTTKNFLIFAREQSDDSDYLHIAFNDLVFAEDKPVIESQWPKDAPADEVSVVADKVSIQYRKWLRELKEAHKEGSQAFRSALLDPVIESDRSYI