Chlorosomes are light-harvesting antennae found in green bacteria. CsmC is one of the proteins that exists in the chlorosome envelope. CsmC has been shown to exist as a homomultimer with CsmD in the chlorosome envelope [1]. CsmC is thought to be important in chlorosome elongation and shape [1].

1: Molecular contacts for chlorosome envelope proteins revealed by cross-linking studies with chlorosomes from Chlorobium tepidum. Li H, Frigaard NU, Bryant DA; Biochemistry. 2006;45:9095-9103. PMID:16866355