3BX4:
reference: The crystal structure of the platelet activator aggretin reveals a novel (alphabeta)2 dimeric structure., Hooley E, Papagrigoriou E, Navdaev A, Pandey AV, Clemetson JM, Clemetson KJ, Emsley J, Biochemistry. 2008 Jul 29;47(30):7831-7. Epub 2008 Jul 3. PMID: 18597489

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