Fibroblast cells from several different xeroderma pigmentosa patients were cultured, then fused in intergenic complementation studies. Which cell fusions would not result in a hybrid capable of repairing damaged DNA?

TLS Online TPP Program

#Question id: 2414

#Unit 2. Cellular Organization

Many actin cross-linking proteins contain:

TLS Online TPP Program

#Question id: 2415

#Unit 2. Cellular Organization

Within an actin filament, each actin subunit is surrounded by how many neighboring actin subunits?

TLS Online TPP Program

#Question id: 2416

#Unit 2. Cellular Organization

At ATP-G-actin concentrations that are intermediate between the Cc for the (+) end and the Cc for the (–) end,_____ will be observed. The Cc needed for elongation at the (+) end is _____ than that at the (–) end of actin microfilaments.

TLS Online TPP Program

#Question id: 2417

#Unit 2. Cellular Organization

All of the following statements about actin assembly are correct EXCEPT:

TLS Online TPP Program

#Question id: 2418

#Unit 2. Cellular Organization

Gelsolin is activated by:

TLS Online TPP Program

#Question id: 2419

#Unit 2. Cellular Organization

During treadmilling, actin subunits add: