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TLS Online TPP Program

#Id: 8862

In vertebrates, stabilization of cohesins requires the cohesin-associated factor sororin.

#Section 3: Genetics, Cellular and Molecular Biology #Steps in cell cycle, regulation and control of cell cycle #Part B Pointers
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TLS Online TPP Program

#Id: 9264

#Section 2: General Biology
TLS Online TPP Program

#Id: 9265

#Section 2: General Biology
TLS Online TPP Program

#Id: 9266

#Section 2: General Biology

N2 constitutes about 80% of the earth’s atmosphere, but the stability of its triple bond renders it inert and metabolically inaccessible to most organisms.
TLS Online TPP Program

#Id: 9267

#Section 2: General Biology

Diazotrophs are able to catalyze the enzymatic reduction of this compound to ammonia (NH3) using the enzyme nitrogenase
TLS Online TPP Program

#Id: 9268

#Section 2: General Biology

Nitrogenase is a complex consisting of the MoFe protein (dinitrogenase or component I) a heterotetramer, and the Fe protein (dinitrogenase reductase or component II) a homodimer.
TLS Online TPP Program

#Id: 9269

#Section 2: General Biology

Fe protein 
contains 2 identical subunits (dimer) – nif H
Each subunit has MW of 30 ~ 72 kD.
Each subunit contains an Fe-S cluster (4Fe and 4S2-).