RasD or RasONC  Replacement of the normal glycine 12 with any other amino acid (except proline) “locks” Ras in the active GTP-bound state.

TLS Online TPP Program

#Id: 1311

#Unit 2. Cellular Organization

E2’s ion binding sites are exposed to the exterior of the cell and it has low affinity for Na+ but high affinity for K+

TLS Online TPP Program

#Id: 6238

#Unit 8. Inheritance Biology

PLUMAGE PATTERNS IN DUCKS

TLS Online TPP Program

#Id: 1869

#Unit 10. Ecological Principles

Intraspecific competition should be more severe than interspecific competition, since resource overlap is greater.

TLS Online TPP Program

#Id: 1099

#Unit 2. Cellular Organization

P1 ATPases transports

Cu+, Ag+, Cu2+, Zn2+, Cd2+, Pb2+ and Co2+.

TLS Online TPP Program

#Id: 5897

#Unit 3. Fundamental Processes

The second metal ion coordinates the negative charges of the b-phosphate and g phosphate of the dNTP and stabilizes the pyrophosphate produced by joining the primer and the incoming nucleotide.