PsbA | D1 protein of PSII, C-terminal, FITC conjugated
AS05 084A-FITC | Clonality: Polyclonal | Host: Rabbit | Reactivity: [global antibody] for higher plants, algae, liverwort, cyanobacteria, diatoms compartment marker of thylakoid membrane
Benefits of using this antibody
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KLH-conjugated synthetic peptide derived from available plant, algal and cyanobacterial PsbA sequences, including Arabidopsis thaliana UniProt: A4QJR4, TAIR: AtCg00020 , Oryza sativa P0C434, Populus alba Q14FH6, Physcomitrella patens Q6YXN7, Chlamydomonas reinhardtii P07753, Synechocystis sp. P14660 and many others
38 | 28-30 kDa
Algae (brown and red), Brassica napus, Conifers, Cyanobacteria, Dictos, Manihot esculenta, Medicago sativa, Nannochloropsis sp., Pisum sativum, Triticum aestivum, cellular [compartment marker] of thylakoid membrane.
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Due to biology of PsbA (D1) protein a number of degradation products can apprear in a sample and may be observed when using anti-PsbA antibodies, including products having apparent molecular weights of 24kDa and 16kDa. D1 degradation is a complex set of events and the products observed can be influenced by both the extraction procedure and the physiology of the cells prior to harvest. Third, cross-linking may occur between D1 and cytochrome b559, shifting the protein higher in the gel. In cyanobacteria (PCC7942), three different bands were competed out by preincubating the antibody with the PsbA free peptide, indicating that all bands are indeed PsbA and its precursors or breakdown products. Competition assays were also performed with spinach and Chlamydomonas, confirming the identity of PsbA bands.
Anti-PsbA antibodies will not detect D2 protein, as the peptide used to generate PsbA antibodies has no homology to the D2 sequence.
This antibody will detect the phosphorylated form of D1 as an alternate band to the main band on a high resolution gel.
The antibody will bind to cross-linked proteins: D1/D2, D1/cyt b559, D1/CP43.
The psbA gene has been cloned from many species of plants, green algae, and cyanobacteria. The psbA gene is located in the chloroplast genome and encodes for the D1 protein, a core component of Photosystem II. PsbA/D1 is rapidly cycled under illumination in all oxygenic photobionts. Tracking PsbA pools using the Global PsbA antibody can show the functional content of Photosystem II in a wide range of samples. Alternative names: 32 kDa thylakoid membrane protein, photosystem II protein D1
Kanazawa et al. (2017). Chloroplast ATP Synthase Modulation of the Thylakoid Proton Motive Force: Implications for Photosystem I and Photosystem II Photoprotection. Front Plant Sci. 2017 May 3;8:719. doi: 10.3389/fpls.2017.00719.
Li et al. (2016). A Hard Day's Night: Diatoms Continue Recycling Photosystem II in the Dark. Front. Mar. Sci., 08 November 2016