oriC is hemimethylated and remains in that condition for approximately 13 minutes.

TLS Online TPP Program

#Id: 8032

#Unit 1. Molecules and their Interaction Relevant to Biology

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

TLS Online TPP Program

#Id: 8033

#Unit 1. Molecules and their Interaction Relevant to Biology

Glycine & Proline are relatively polar considering negative hydropathy index (-0.4 & -1.6) comparing to other nonpolar amino acids.

TLS Online TPP Program

#Id: 8034

#Unit 1. Molecules and their Interaction Relevant to Biology

Nonpolar amino acids have three ionisations zones

1. 1--------pK1 – charge +1

2. pK1---------pK2 charge 0

3. pK2---------14 charge -1

TLS Online TPP Program

#Id: 8035

#Unit 1. Molecules and their Interaction Relevant to Biology

Negatively charged amino acids have four ionisations zones

1. 1--------pK1 – charge +1

2. pK1---------pKr charge 0

3. pKr---------pK2 charge -1

4. pK2---------14 charge -2

TLS Online TPP Program

#Id: 8036

#Unit 1. Molecules and their Interaction Relevant to Biology

Lys & Arg have four ionisations zones

1. 1--------pK1 – charge +2

2. pK1---------pK2 charge +1

3. pK2---------pKr charge 0

4. pKr---------14 charge -1

TLS Online TPP Program

#Id: 8037

#Unit 1. Molecules and their Interaction Relevant to Biology

Lys & Arg have ionisation series

1------pK1-----pK2--------pKr------14