Phosphorylation of p53 on a serine residue in the N-terminus by ATM or DNA-PK displaces bound MDM2 from p53, thereby stabilizing it

TLS Online TPP Program

#Id: 7171

#Unit 5. Developmental Biology

During cleavage, β-catenin enters the nuclei and binds with Tcf3 to form a transcription factor that activates genes encoding proteins Siamois and Twin.

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#Id: 8984

#Unit 11. Evolution and Behavior

Genotype Frequencies

TLS Online TPP Program

#Id: 5052

#Unit 3. Fundamental Processes

DnaA-ATP in an extended multimeric state promoted by the accessory protein DiaA, which stimulates cooperative binding of DnaA.

DnaA-ATP binds cooperatively to form a helical central core around which oriC DNA is wrapped.

TLS Online TPP Program

#Id: 3848

#Unit 5. Developmental Biology

For stalk and spore maturation, cAMP is produced by adenylate cyclase R (ACR)

TLS Online TPP Program

#Id: 3076

#Unit 3. Fundamental Processes

The division of a bacterium into two daughter cells is accomplished by the formation of a septum.