The C5b component is extremely labile, is not covalently bound to the membrane like C3b and C4b, and is rapidly inactivated unless it is stabilized by the binding of C6.

TLS Online TPP Program

#Id: 2346

#Unit 3. Fundamental Processes

Sigma factor reduces the affinity for sequence independent binding and confers specificity for promoter.

TLS Online TPP Program

#Id: 8195

#Unit 2. Cellular Organization

A Pex 2, Pex 10, and Pex 12 complex embedded in the peroxisomal membrane transfers Ubiquitin to two embedded Pex 5 receptors.

TLS Online TPP Program

#Id: 3117

#Unit 3. Fundamental Processes

The origin of E. coli, oriC, is 245 bp in length. The genome of E. coli is replicated bidirectionally from a single unique site called the origin, identified as the genetic locus oriC.

Two replication forks initiate atoriCand move around the genome at approximately the same speed to a special termination region.

TLS Online TPP Program

#Id: 7596

#Unit 5. Developmental Biology

Mouse cumulus cells also secrete a substance, CRISP1, that attracts sperm and hyperactivates them through CatSper channels

TLS Online TPP Program

#Id: 2183

#Unit 10. Ecological Principles

Succession, the gradual and continuous change in species composition and community structure over time