TLS Online TPP Program

#Id: 9270

#Section 2: General Biology

MoFe protein 

2 pairs of identical subunits (tetramer, nif D & nif K)

A total of MW 180 ~ 235kD

Each subunit has 2 Mo-Fe-S clusters.

Both Fe proteins and MoFe proteins are sensitive to O2. 

TLS Online TPP Program

#Id: 8395

#Section 3: Genetics, Cellular and Molecular Biology

Sarcomere

Within each skeletal muscle cell are many myofibrils consisting of a repeating array of a specialized structure

TLS Online TPP Program

#Id: 8394

#Section 3: Genetics, Cellular and Molecular Biology

When the Ca2+ levels drop:

Myosin LC is dephosphorylated by MLC phosphatase, causing muscle relaxation.

TLS Online TPP Program

#Id: 8175

#Section 3: Genetics, Cellular and Molecular Biology

SNARE-mediated fusion occurs during exocytosis of secreted proteins. In this case, 

v-SNARE, are VAMP 

t-SNAREs are syntaxin & SNAP-25

TLS Online TPP Program

#Id: 10303

#Section 2: General Biology

T-cell costimulatory