Beta-1,4-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase MESCSCHPGS GVQWRDHGSL QLPPPGFKMK MRRYKLFLMF CMAGLCLISF LHFFKTLSYV TFPRELASLS PNLVSSFFWN NAPVTPQASP EPGGPDLLRT PLYSHSPL