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TLS Online TPP Program

#Id: 8032

Ornithine and citrulline, which are not found in proteins, are intermediates in the biosynthesis of arginine and in the urea cycle.


#Unit 1. Molecules and their Interaction Relevant to Biology #Amino Acids #Part B Pointers
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TLS Online TPP Program

#Id: 372

#Unit 2. Cellular Organization

If Lk <Lk0 and DLk is <0 means negative, then the DNA is said to be “negatively supercoiled.”
TLS Online TPP Program

#Id: 373

#Unit 2. Cellular Organization

Conversely, if Lk >Lk0  and DLk >0 means positive, then the DNA is “positively supercoiled.”
TLS Online TPP Program

#Id: 374

#Unit 2. Cellular Organization

Superhelical Density 
TLS Online TPP Program

#Id: 375

#Unit 2. Cellular Organization

Circular DNA molecules purified from both bacteria and eukaryotes are usually negatively supercoiled, having values of s of approximately –0.06.
TLS Online TPP Program

#Id: 376

#Unit 2. Cellular Organization

How to calculate linking number?
TLS Online TPP Program

#Id: 377

#Unit 2. Cellular Organization

For negatively supercoiled circle W < 0 
For a positively coiled superhelix W > 0.