1HBS: Refined Crystal Structure Of Deoxyhemoglobin S. I. Restraine Squares Refinement At 3.0-Angstroms Resolution
reference: Refined crystal structure of deoxyhemoglobin S. I. Restrained least-squares refinement at 3.0-A resolution., Padlan EA, Love WE, J Biol Chem 1985 Jul 15;260(14):8272-9. PMID: 4008491

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