>gnl|BMRB|4200.1 c-Myc-Max_Leucine_Zipper_Chain_A XCGGVQAEEQKLISEEDLLRKRREQLKHKLEQLX >gnl|BMRB|4200.2 Max_Leucine_Zipper_Chain_B XCGGMRRKNDTHQQDIDDLKRQNALLEQQVRALX