Sequence alignment of viral and human bZIPs. Amino acid sequences were obtained from the National Center for Biotechnology Information (NCBI) gene database and from the UniProt Knowledgebase. Colored residues represent consensus (red and gray) or basic (blue) amino acids. The viral bZIPs Zta, K-bZIP, MEQ, HBZ, and NS4B are expressed by the viruses Epstein-Barr virus, Kaposi’s Sarcoma associated herpesvirus, Marek’s disease virus, human T-lymphotropic virus, and hepatitis C virus, respectively. NCBI Accession Numbers: c-Jun NP_002219.1; c-Fos NP_005243.1; C/EBPα AAC50235.1; CHOP NP_001181982.1; CREB1 NP_001358356.1; NFIL3 NP_001276928.1; XBP1s NP_001073007.1; ATF4 NP_001666.2; ATF6α NP_031374.2; ATF6β NP_004372.3; Zta YP_401673.1; K-bZIP AAD21530.1; MEQ AFU65791.1; HBZ BAX35088.1; NS4B PRO_0000037526.