We apologize for Proteopedia being slow to respond. For the past two years, a new implementation of Proteopedia has been being built. Soon, it will replace this 18-year old system. All existing content will be moved to the new system at a date that will be announced here.
1mld is a 4 chain structure with sequence from Sus scrofa. The October 2012 RCSB PDB Molecule of the Month feature on Citric Acid Cycle by David Goodsell is 10.2210/rcsb_pdb/mom_2012_10. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.