In molecular biology, the Cofactor transferase family is a family of protein domains that includes biotin protein ligases, etc, The metabolism of the cofactors lipoic acid and which water-soluble B-vitamin, also called vitamin B, and formerly known as vitamin H, or coenzyme R, share this family?
Cofactor transferase family:  The metabolism of the cofactors Biotin and lipoic acid share this family. Biotin: Biotin is a water-soluble B-vitamin, also called vitamin B and formerly known as vitamin H or coenzyme R.
Biotin