Lhca4 | PSI type IV chlorophyll a/b-binding protein
AS01 008 | Clonality: Polyclonal | Host: Rabbit | Reactivity: Monocots and dicots including A.thaliana, F. margarita Swingle, H.vulgare, Nicotiana tabacum, O. sativa, P. patens, S.oleracea, T. aestivum, Triticale, Z.mays
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BSA-conjugated synthetic peptide derived from the Lhca4 protein ofArabidopsis thaliana UniProt: P27521, TAIR: At3g47470. This sequence is highly conserved in Lhca4 proteins of angiosperms (monocots and dicots) and gymnosperms.
27.7 | 21 kDa for Arabidopsis thaliana
1 µg of chlorophyll from Pisum sativum (1), Mesembryanthemum crystallinum (2), mesophyll (3) and bundle sheath (4) of Zea mays, mesophyll (5) and bundle sheath (6) of Echinochloa crus-galli chloroplasts extracted with 0.4 M sorbitol, 50 mM Hepes NaOH, pH 7.8, 10 mM NaCl, 5 mM MgCl2 and 2 mM EDTA were loaded to lanes. Samples were denatured with Laemmli buffer at 75 0C for 5 min and were separated on 12% SDS-PAGE, and blotted 30 min to PVDF using wet transfer. Blot was blocked with 5% milk for 2h at room temperature (RT) with agitation. Blot was incubated in the primary antibody Anti-Lhca4 (LOT 1908) at a dilution of 1: 3000 in 1% milk in TBS-T overnight at 4°C with agitation. The antibody solution was decanted and the blot was washed 4 times for 5 min in TBS-T at RT with agitation. Blot was incubated in secondary antibody (anti-rabbit IgG HRP conjugated, from Agrisera, AS09 602, LOT 1905) diluted to 1:20 000 in 1 % milk in TBS-T for 1h at RT with agitation. The blot was washed 5 times for 5 min in TBS-T and 2 times for 5 min in TBS, and developed for 1 min with 1.25 mM luminol, 0.198 mM coumaric acid and 0.009% H2O2 in 0.1 M Tris- HCl, pH 8.5. Exposure time in ChemiDoc System was 30 seconds.
Courtesy of Dr. Wioleta Wasilewska-Dębowska, Warsaw University, Poland
The light-harvesting protein Lhca4 is one of the four main and highly conserved types of chlorophyll a/b-binding proteins (Lhca1-4) of the light harvesting antenna (LHCI) of plant photosystem I. Lhca4 is imported as a precursor from the cytosol into the chloroplast. Upon insertion into the thylakoid membrane Lhca4 forms a heterodimer (LHCI-730) with Lhca1 that associates with the PSI core close to PsaG and PsaF.
A biochemical characterization of the plant LHCI antenna can be found in Klimmek et al. (2005) The structure of the higher plant light harvesting complex I: in vivo characterization and structural interdependence of the Lhca proteins. Biochemistry 44: 3065–3073.
Li et al. (2018). Modulating plant growth-metabolism coordination for sustainable agriculture. Nature. 2018 Aug 15. doi: 10.1038/s41586-018-0415-5.
Zhu et al. (2018). A comprehensive proteomic analysis of elaioplasts from citrus fruits reveals insights into elaioplast biogenesis and function. Hortic Res. 2018 Feb 7;5:6. doi: 10.1038/s41438-017-0014-x.
Myouga et al. (2018). Stable accumulation of photosystem II requires ONE-HELIX PROTEIN1 (OHP1) of the light harvesting-like family. Plant Physiol. 2018 Feb 1. pii: pp.01782.2017. doi: 10.1104/pp.17.01782.
Tyuereva et al. (2017). The absence of chlorophyll b affects lateral mobility of photosynthetic complexes and lipids in grana membranes of Arabidopsis and barley chlorina mutants. Photosynth Res. 2017 Apr 5. doi: 10.1007/s11120-017-0376-9. (Hordeum vulgare, western blot)
Yang-Er Chen et al. (2017). Responses of photosystem II and antioxidative systems to high light and high temperature co-stress in wheat. J. of Exp. Botany, Volume 135, March 2017, Pages 45–55.
Nath et al. (2016). A Nitrogen-Fixing Subunit Essential for Accumulating 4Fe-4S-Containing Photosystem I Core Proteins. Plant Physiol. 2016 Dec;172(4):2459-2470.
Yokono et al. (2015). A megacomplex composed of both photosystem reaction centres in higher plants. Nat Commun. 2015 Mar 26;6:6675. doi: 10.1038/ncomms7675.
Qin et al. (2014). Isolation and characterization of a PSI-LHCI super-complex and its sub-complexes from a siphonaceous marine green alga, Bryopsis Corticulans. Photosynth Res. 2014 Sep 12.
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