The target gene of CO -FLOWERING LOCUS T (FT)

TLS Online TPP Program

#Id: 9276

#Unit 6. System Physiology – Plant

NodA is an N-acyltransferase that catalyzes the addition of a fatty acyl chain.

NodB is a chitin-oligosaccharide deacetylase that removes the acetyl group from the terminal nonreducing sugar.

NodC is a chitin-oligosaccharide synthase that links N-acetyl-D-glucosamine monomers.

TLS Online TPP Program

#Id: 6299

#Unit 3. Fundamental Processes

In the case of the bacterial enzyme bearing s70, this transition, often called isomerization, does not require energy derived from ATP hydrolysis and is instead the result of a spontaneous conformational change in the DNA– enzyme complex to a more energetically favorable form.

TLS Online TPP Program

#Id: 8459

#Unit 1. Molecules and their Interaction Relevant to Biology

Five types of constraints affect the stability of an  helix: 

(1) the intrinsic propensity of an amino acid residue to form an  helix; 

(2) the interactions between R groups, particularly those spaced three (or four) residues apart; 

(3) the bulkiness of adjacent R groups; 

(4) the occurrence of Pro and Gly residues; and 

(5) interactions between amino acid residues at the ends of the helical segment and the electric dipole inherent to the  helix.

TLS Online TPP Program

#Id: 1917

#Unit 4. Cell Communication and Cell Signaling

B-Cell Activation

TLS Online TPP Program

#Id: 2313

#Unit 3. Fundamental Processes

Splicing is an SN2 reaction that proceeds through a pentavalent phosphorous intermediate.