#pdbid|chain|deposition date|is S/K-not|(slip)knot types; 4xpa|A|2015-11-11|S|+3.1 4.1 +3.1; 4xnx|A|2015-11-11|S|+3.1 4.1 +3.1; 4xnu|A|2015-11-11|S|+3.1 4.1 +3.1; 4xpf|A|2015-05-07|S|+3.1 4.1; 4xpg|A|2015-05-07|S|+3.1 4.1; 4xp9|C|2015-05-07|S|+3.1 4.1; 4xp5|A|2015-05-07|S|+3.1 4.1; 4xp4|A|2015-05-07|S|+3.1 4.1;