Sequence alignment of the CH2 domains of CBP and p300 homologs. Residues numbers of mouse CBP are shown above the sequence. Completely conserved residues throughout species are colored by residue types. Residues proposed to coordinate zinc atoms are marked by asterisks. Sequences included are CBP/P300MOUSE, CBP/P300_HUMAN, XP_001332718.3, NP_001088637.1, Q9W321_DROME, CBP1_CAEEL, XP_311133.5, XP_002411559.1, EFX66192.1, XP_782558.3, EFA02517.1, NP_001191640.1, XP_002156492.2, XP_003383601.1, XP_002572380.1, EGD72148.1, XP_004347654.1, XP_002179989.1, HAC1_ARATH, HACL3_ORYSJ.