Timtailieu.net 
Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
3405
1
0
9 trang
H2-forming methylenetetrahydromethanopterin dehydro-genase (Hmd) is an unusual hydrogenase present in manymethanogenic archaea. The homodimeric enzyme dubbedmetal-free hydrogenase does not contain iron–sulfur clus-ters or nickel and thus differs from [Ni-Fe] and [Fe-Fe]hydrogenases, which are all iron–sulfur proteins. Hmdpreparations were found to contain up to 1 mol iron per40 kDa subunit, but the iron was considered to be a con-taminant as none of the catalytic and spectroscopic pro-perties of the enzyme indicated that it was an essentialcomponent....
Nội dung trích xuất từ tài liệu:
Báo cáo khóa học: UV-A/blue-light inactivation of the ‘metal-free’ hydrogenase (Hmd) from methanogenic archaea The enzyme contains functional iron after all
