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.
5abr is a 2 chain structure with sequence from Azotobacter vinelandii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
FER2_AZOVD Ferredoxins are iron-sulfur proteins that transfer electrons in a wide variety of metabolic reactions. Might be involved in nitrogen fixation.