In E. coli, two clusters of five ter sites each, including terK, -I, -E, -D, and -A on one side and terC, -B, -F, -G, and -H on the other, are located 100 kb on either side of this termination region.

Each set of ter sites is specific for one direction of fork movement

TLS Online TPP Program

#Id: 8108

#Unit 1. Molecules and their Interaction Relevant to Biology

A typical membrane lipid of archaea.

Diphytanyl moieties are 8 five-carbon isoprene groups condensed end-to-end.

TLS Online TPP Program

#Id: 8109

#Unit 1. Molecules and their Interaction Relevant to Biology

TLS Online TPP Program

#Id: 8110

#Unit 1. Molecules and their Interaction Relevant to Biology

Archaea membrane lipids are isoprene-based lipids.

TLS Online TPP Program

#Id: 8111

#Unit 1. Molecules and their Interaction Relevant to Biology

TLS Online TPP Program

#Id: 8112

#Unit 1. Molecules and their Interaction Relevant to Biology

The amino group at C-2 bears a fatty acid in amide linkage.

The fatty acid is usually saturated or monounsaturated, with 16, 18, 22, or 24 carbon atoms.

Ceramide is the parent compound for this group.

TLS Online TPP Program

#Id: 8114

#Unit 1. Molecules and their Interaction Relevant to Biology

Sphingosine itself can be phosphorylated to produce sphingosine-1-phosphate (S1P) inside cells.