Data inconsistencies are preventing 1ZX4's sequences from being correctly annotated.
Report this issue to the PDB helpdesk and we will do our best to rectify the problem.
RCSB PDB (citation) is managed by two members of the Research Collaboratory for Structural Bioinformatics: Rutgers and UCSD/SDSC
RCSB PDB is a member of the
The RCSB PDB is funded by a grant (DBI-1338415) from the
National Science Foundation, the
National Institutes of Health, and the
US Department of Energy.