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- Title
Identification and Localization of the CupB Protein Involved in Constitutive CO2 Uptake in the Cyanobacterium, Synechocystis sp. Strain PCC 6803.
- Authors
Min Xu; Teruo Ogawa; Himadri B. Pakrasi; Hualing Mi
- Abstract
Antibody against cMyc cross-reacted strongly with the CupB protein tagged with His6-cMyc (HM) in thylakoid membrane of Synechocystis sp. strain PCC 6803 but only faintly with the cytoplasmic membrane fraction. The protein was not detected in the membranes of the ΔndhD4 and ΔndhF4 mutants in which CupB was tagged with HM. We concluded that a CupB complex containing NdhD4 and NdhF4 is largely, if not exclusively, confined to the thylakoid membrane. Both CupB and NdhH were detected in a fraction containing protein complexes of > 450 kDa, obtained after nickel column and gel filtration chromatography of the membranes solubilized with n-dodecyl-β-maltoside.
- Subjects
GEL permeation chromatography; CHROMATOGRAPHIC analysis; CELL membranes; NICKEL
- Publication
Plant & Cell Physiology, 2008, Vol 49, Issue 6, p994
- ISSN
0032-0781
- Publication type
Article