HER2 (mouse Erb-B2), cannot bind any ligand, it can form a heterodimer with ligand-activated HER1, HER3, or HER4 (Erb-B1, 3, or 4)

TLS Online TPP Program

#Id: 8440

#XL - T Zoology

Source–sink metapopulation model - A population model that builds on the basic metapopulation model and accounts for the fact that not all patches of suitable habitat are of equal quality.

TLS Online TPP Program

#Id: 8441

#XL - T Zoology

Landscape metapopulation model - A population model that considers both differences in the quality of the suitable patches and the quality of the surrounding matrix.

TLS Online TPP Program

#Id: 8442

#XL - T Zoology

The proportion of occupied patches will stabilize over time to =1− (x/m)

x - Extinction rate 

m - Rate of movement between patches

TLS Online TPP Program

#Id: 4333

#XL - T Zoology

About 75% of the charged residues in proteins are members of ion pairs that are located mostly on the protein surface.

Despite the strong electrostatic attraction interactions contribute little to the stability of a native protein.

TLS Online TPP Program

#Id: 4356

#XL - T Zoology

The overall probability of RNase A re-forming its four native disulfide links at random is-

TLS Online TPP Program

#Id: 4385

#XL - T Zoology

Proteins fold to their native conformations via directed pathways rather than stumbling on them through random conformational searches.