Involved in the biosynthesis of phylloquinone (vitamin K1). Converts 2-succinylbenzoate (OSB) to 2-succinylbenzoyl-CoA (OSB-CoA). 2-succinylbenzoate + ATP + CoA = 2-succinylbenzoyl-CoA + AMP + diphosphate Accumulates in discrete foci within the chloroplast. High expression in young leaves and flowers. Not expressed in roots. Lack of phylloquinone and seedling lethal. Belongs to the ATP-dependent AMP-binding enzyme family. MenE subfamily.