Chemical barriers at these surfaces include specialized soluble substances that possess antimicrobial activity as well as acid pH.

TLS Online TPP Program

#Id: 8913

#XL - T Zoology

APC/CCdc²⁰ is inhibited by a checkpoint pathway that ensures that anaphase is not initiated until all chromosomes have achieved proper attachment to the mitotic apparatus.

TLS Online TPP Program

#Id: 8602

#XL - T Zoology

cyclin-CDK complexes preferentially phosphorylate

serine and threonine residues when they are found within the consensus sequence:

[S/T]PX[R/K]K 

TLS Online TPP Program

#Id: 10053

#XL - T Zoology

γ-secretase complex contains 

Presenilin 1 (actual protease), aph-1, pen-2, & nicastrin

TLS Online TPP Program

#Id: 8057

#XL - Q Biochemistry

Cysteine, tryptophan, and methionine are not common amino acids: together, they constitute approximately 5 percent of the amino acids in a typical protein. Four amino acids—leucine, serine, lysine, and glutamic acid—are the most abundant amino acids, constituting 32 percent of all the residues in a typical protein.

TLS Online TPP Program

#Id: 9284

#XL - S Microbiology

O2‐binding plant protein Lb plays an active role in regulating and delivering O2 in the infected cells

Bacterial respiration is the major O2 sink