Very small amount of far-red light absorbed by Pr makes it impossible to convert Pfr entirely to Pr by broad spectrum far-red light. An equilibrium of 97% Pr and 3% Pfr is achieved. This equilibrium is termed the photostationary state.

TLS Online TPP Program

#Id: 8539

#XL - Q Biochemistry

The short (∼20 amino acid) C-terminal tails of both α- and β-tubulin that protrude from the microtubule are enriched in glutamic and aspartic acids, the surface of the microtubule possesses a net negative charge.

TLS Online TPP Program

#Id: 8438

#XL - T Zoology

Where conditions for plant growth are less stressful, plants can evolve life history traits that fall along a continuum from competitors to ruderals.

TLS Online TPP Program

#Id: 9446

#XL - T Zoology

The cytokines form a family of relatively small, secreted signaling molecules:

Contain about 160–200 AA

4 long, conserved α helices

Control growth and differentiation

TLS Online TPP Program

#Id: 9791

#XL - R Botany

TLS Online TPP Program

#Id: 10370

#XL - Q Biochemistry

HLA-G

These are present on fetal cells at the maternal-fetal interface and are credited with inhibiting rejection by maternal CD8+ T cells by protecting the fetus from identification as foreign.