Publications

Popelková H, Commet A, Kuntzleman T, Yocum CF. "Inorganic cofactor stabilization and retention: The unique functions of the two PsbO subunits of eukaryotic Photosystem II." Biochemistry. 47, 12593-12600 (2008). [Full Text]

Wyman AJ, Popelková H, Yocum CF. "Site-directed mutagenesis of conserved C-terminal Tyrosine and Tryptophan residues of PsbO, the Photosystem II manganese stabilizing protein, alters its activity and fluorescence properties." Biochemistry. 47, 6490-6498 (2008). [Full Text]

Yocum, C.F.. "The calcium and chloride requirements of the O-2 evolving complex." Coordination Chemistry Reviews. 252, 296-305 (2008).

Popelkova, H., and Yocum, C.F.. "Current status of the role of Cl- ion in the oxygen-evolving complex." Photosynthesis Research. 93, 111-121 (2007).

Miqyass, M., van Gorkom, H.J., and Yocum, C.F.. "The PSII calcium site revisited." Photosynthesis Research. 92, 275-287 (2007).

Popelkova, H., Betts, S.D., Lydakis-Simantiris, N., Im, M.M., Swenson, E., and Yocum, C.F.. "Mutagenesis of basic residues R151 and R161 in manganese-stabilizing protein of photosystem II causes inefficient binding of chloride to the oxygen-evolving complex." Biochemistry 45. 3107-3115 (2006).

Nelson, N. and Yocum, C.F. . "Structure and Function of Photosystems I and II." Annual Review of Plant Biology 57. 521-565 (2006).

Babcock, G.T. and Yocum, C.F. . "Dioxygen production." Bertini, I., Gray, H.B., Stiefel, E.I., and Valentine, J. S. (eds.) Biological Inorganic Chemistry: Structure and Reactivity. 302-318 University Science Books, Mill Valley, CA, (2006).

Penner-Hahn, J.E. and Yocum, C.F. . "The photosynthesis 'oxygen clock' gets a new number." Science 310. 982-983 (2005).

Wyman, A.J. and Yocum, C.F. . "Structure and activity of the photosystem II manganese stabilizing protein: Role of the conserved disulfide bond." Photosynthesis Research 85. 359-372 (2005).

Wyman, A.J. and Yocum, C.F. . "Assembly and function of the photosystem II manganese stabilizing protein: Lessons from its natively unfolded behavior." Photosynthesis Research 84. 283-289 (2005).

Kuntzleman, T. and Yocum, C.F. . "Reduction-induced inhibition and Mn(II) release from the photosystem II oxygen-evolving complex by hydroquinone or NH2OH are consistent with a Mn(III)/Mn(III)/Mn(IV)/Mn(IV) oxidation state for the dark-adapted enzyme." Biochemistry 44. 2129-2142 (2005).

Kuntzleman, T., McCarrick, R., Penner-Hahn, J.E. and Yocum, C.F.. "Probing reactive sites within the photosystem II manganese cluster: Evidence for separate populations of manganese that differ in redox potential." Physical Chemistry and Chemical Physics 6. 4897-4904 (2004).

Vander Meulen, K., Hobson, A. and Yocum, C.F.. "Reconstitution of the photosystem II Ca2+ binding site." Biochim. Biophys. Acta 1655. 179-183 (2004).

Yocum, C.F. . "Oxygen Production." Encyclopedia of Plant & Crop Science. 857-860 Goodman, R.M., Marcel Dekker, New York, NY (2004).

Popelkova, H., Wyman, A.J. and Yocum, C.F.. "Amino acid sequences and solution structures of manganese stabilizing protein that affect reconstitution of photosystem II activity   ." Photosynthesis Research 77. 21-34 (2003).

Popelkova, H., Im, M.M., and Yocum, C.F.. "Binding of manganese stabilizing protein to photosystem II: Identification of essential N-terminal threonine residues and domains that prevent nonspecific binding." Biochemistry 42. 6193-6200 (2003).

Vander Meulen, K., Hobson, A., and Yocum, C.F.. "Calcium extraction alters the structure of the photosystem II oxygen evolving complex   ." Biochemistry 41. 958-966 (2002).

Popelkova, H., Im, M., Lydakis-Simantiris, N., Betts, S. and Yocum, C.F. (2002). . "N-terminus of the photosystem II manganese stabilizing protein: Effects of sequence elongation and truncation." Biochemistry 41. 2702-2711 (2002).

Popelkova, H., Im, M., and Yocum, C.F. . "N-terminal truncations of manganese stabilizing protein identify two amino acid sequences required for binding of the eukaryotic protein to photosystem II, and reveal the absence of one binding-related sequence in cyanobacteria.    ." Biochemistry 41. 10038-10045 (2002).

Hong, S.K., Pawlikowski, S., Vander Meulen, K.A. and Yocum, C.F.. "The oxidation state of the photosystem II manganese cluster influences the structure of manganese stabilizing protein." Biochim. Biophys. Acta 1504. 256-274 (2001).

Lydakis-Simantiris, N., Hutchison, R., Betts, S.D., Barry, B.A. and Yocum, C.F. . "Manganese Stabilizing Protein of photosystem II is a thermostable, natively unfolded polypeptide." Biochemistry 38. 404-414 (1999).

Wincencjusz, H., Yocum, C.F. and van Gorkom, H.J. "Activating anions that replace Cl- in the O2 evolving complex of photosystem II slow the kinetics of the terminal step in water oxidation and destabilize the S2 and S3 states." Biochemistry 38. 3719-3725 (1999).

Yocum, C.F. and Pecoraro, V.L. . "Recent advances in the understanding of the biological chemistry of manganese." Current Opinion in Chemical Biology 3. 182-187 (1999).

Hutchison, R.S., Steenhuis, J.J., Yocum, C.F., Razeghifard, M.R., and Barry, B.A. "Deprotonation of the 33 kDa extrinsic, manganese-stabilizing subunit accompanies photooxidation of manganese in photosystem II." J. Biol. Chem. 274. 31987-31995 (1999).

Lydakis-Simantiris, N., Betts, S.D., and Yocum, C.F. . "Leucine 245 is a critical residue for folding and function of the manganese stabilizing protein of photosystem II." Biochemistry 38. 15528-15535 (1999).