Iron stress-induced chlorophyll-binding protein (isiA) Recombinant Protein | Synpcc7942_1542 recombinant protein
Recombinant Synechococcus elongatus Iron stress-induced chlorophyll-binding protein (isiA)
NCBI and Uniprot Product Information
Uniprot Description
Function: Functions as an antenna for photosystem I (PSI) under iron-limiting conditions, when phycobilisomes disappear. Also functions as a dissipator of light energy, protecting cells from excessive light under iron-deficient conditions. Sequesters chlorophyll when cells are growing in iron-deficient conditions; it may bind up to 50% of the chlorophyll in iron-starved cells.
Cofactor: Binds 16-17 chlorophyll a molecules per subunit. Ref.7Beta-carotene. Ref.7
Subunit structure: Under iron-starvation forms a complex with PSI trimers, where the trimer is surrounded by a ring composed of 18 IsiA subunits.
Subcellular location: Cellular thylakoid membrane; Multi-pass membrane protein. Note: Probably the major component of the CPVI-4 chlorophyll-protein complex. Ref.3 Ref.7
Induction: By iron stress, and also by exposure to oxidative stress such as hydrogen peroxide and methylviologen treatment. Ref.1 Ref.8
Disruption phenotype: In cells lacking isiA under iron-deficient conditions, approximately 2-fold less chlorophyll is found per cell. Ref.3
Sequence similarities: Belongs to the PsbB/PsbC family. IsiA/pcb subfamily.
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Product Notes
The Synpcc7942_1542 isia (Catalog #AAA1132944) is a Recombinant Protein produced from E Coli or Yeast or Baculovirus or Mammalian Cell and is intended for research purposes only. The product is available for immediate purchase. The immunogen sequence is 1-342. The amino acid sequence is listed below: MQTYNNPEVT YDWWAGNARF ANLSGLFIAA HVAQAALIMF WAGAFTLYEI SWLTADQSMG EQGLILLPHL ATLGLGVGDG GQVTDTYPLF VVGAVHLIAS AVLGAGALFH TFRAPSDLAA ASGAAKRFHF DWNDPKQLGL ILGHHLLFLG VGALLLVAKA TTWGGLYDAA SQTVRLVTEP TLNPAVIYGY QTHFASIDNL EDLVGGHVYV GVMLIAGGIW HILVPPFQWT KKVLIYSGEA ILSYSLGGIA LAGFVAAYFC AVNTLAYPVE FYGAPLEIKL GVTPYFADTV QLPFGAHTPR AWLSNAHFFL AFFCLQGHLW HALRAMGFDF RRVEKALSSV EA. It is sometimes possible for the material contained within the vial of "Iron stress-induced chlorophyll-binding protein (isiA), Recombinant Protein" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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