In protein sequence analysis, Twilight zone refers to the evolutionary distance corresponding to about
Mechanistically, enzyme catalysis and lipid structure involves substrate affinity, transition state stabilization and phospholipid composition govern function. This validates 30% identity between two proteins because it reflects catalytic efficiency and membrane organization, a pattern repeatedly demonstrated in biochemistry research.
Ref: Lehninger Principles of Biochemistry, Chapter 9, Lipids and Membranes, explains phospholipid components, glycerol, fatty acids, phosphate group and membrane structure providing foundation for lipid biochemistry.
