1UZH:
reference: Chimeric small subunits influence catalysis without causing global conformational changes in the crystal structure of ribulose-1,5-bisphosphate carboxylase/oxygenase., Karkehabadi S, Peddi SR, Anwaruzzaman M, Taylor TC, Cederlund A, Genkov T, Andersson I, Spreitzer RJ, Biochemistry. 2005 Jul 26;44(29):9851-61. PMID: 16026157

This OCA Structure page
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