3CYU

Human Carbonic Anhydrase II complexed with Cryptophane biosensor and xenon

Summary for 3CYU

• Entry DOI: 10.2210/pdb3cyu/pdb
• Descriptor: Carbonic anhydrase 2, ZINC ION, MoMo-2-[4-(2-(4-(methoxy)-1H-1,2,3-triazol-1-yl)ethyl)benzenesulfonamide]-7,12-bis-[3-(4-(methoxy)-1H-1,2,3-triazol-1-y l)propanoic acid]-cryptophane-A, ... (6 entities in total)
• Functional Keywords: zinc metalloenzyme, sulfonamide, cryptophane, xenon, biosensor, disease mutation, lyase, metal-binding
• Biological source: Homo sapiens (human)
• Cellular location: Cytoplasm: P00918
• Total number of polymer chains: 1
• Total formula weight: 32464.06

Authors

Aaron, J.A.,Jude, K.M.,Di Costanzo, L.,Christianson, D.W. (deposition date: 2008-04-26, release date: 2008-05-27, Last modification date: 2023-08-30)

Primary citation

Aaron, J.A.,Chambers, J.M.,Jude, K.M.,Di Costanzo, L.,Dmochowski, I.J.,Christianson, D.W.
Structure of a 129Xe-cryptophane biosensor complexed with human carbonic anhydrase II.
J.Am.Chem.Soc., 130:6942-6943, 2008

PubMed Abstract: Cryptophanes represent an exciting class of xenon-encapsulating molecules that can be exploited as probes for nuclear magnetic resonance imaging. The 1.70 A resolution crystal structure of a cryptophane-derivatized benezenesulfonamide complexed with human carbonic anhydrase II shows how an encapsulated xenon atom can be directed to a specific biological target. The crystal structure confirms binding measurements indicating that the cryptophane cage does not strongly interact with the surface of the protein, which may enhance the sensitivity of 129Xe NMR spectroscopic measurements in solution.

PubMed: 18461940
DOI: 10.1021/ja802214x

Experimental method

X-RAY DIFFRACTION (1.7 Å)