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isiA

Gene
isiA
Protein
Iron stress-induced chlorophyll-binding protein
Organism
Thermosynechococcus elongatus (strain BP-1)
Length
358 amino acids
Function
Functions as an antenna for photosystem I (PSI) under iron-limiting conditions, when phycobilisomes disappear. In the (PSI)3(Isi3)18 complex most of the harvested energy is probably used by PSI; in other PSI-containing supercomplexes a large part of the energy will probably not be used for light harvesting, but rather is dissipated to protect the organism from light damage.
Similarity
Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
Mass
39.252 kDa
Sequence
MAIASESPTTVTSAGLQTYGQTNVKYDWWAGNARFVNLSGLFIAAHVAQAALSVFWAGAFTLYEISQYKPDLPMGEQGLILLPHLATLGFGIGEGGKVVDLYPYFVIGAVHLISSAVLGAGALFHTFRAPHDLSTATGRARRFHFRWDDPKQLGIILGHHLLFLGFGALLLVLKATIWGGLYDANLQTVRLITQPTLDPFVIYGYQTHFASINSLEDLVGGHIYIAILLIAGGIWHILVPPLTWARKLLMFNAEAILSYSLGGIALAGFVAAYFCAVNTLAYPVEFYGPPLEVKLGIAPYFADTIELPLGQHTSRAWLANAHFFLAFFFLQGHLWHALRAMGFNFKQLETFLNPAIEN

Gene
isiA
Protein
Iron stress-induced chlorophyll-binding protein
Organism
Fischerella muscicola
Length
345 amino acids
Function
Functions as an antenna for photosystem I (PSI) under iron-limiting conditions, when phycobilisomes disappear. In the (PSI)3(Isi3)18 complex most of the harvested energy is probably used by PSI; in other PSI-containing supercomplexes a large part of the energy will probably not be used for light harvesting, but rather is dissipated to protect the organism from light damage.
Similarity
Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
Mass
38 kDa
Sequence
MQTYDNPKVKYDWWAGNARFANLSGLFIGAHVAQAALTTLWAGAFTWFELSRYQSGVPMGEQGLILLPHLATLGFGVGAGGQIVDTYPYFVIGALHIISSAVLGAGALLHTFKGPENLKDATGPAREFHFEWDDANKLGLILGHHLLFLGAGALLLVAKAMFWGGLYDTTIHDVRVVTEPTLNPFIIFGYQTHFASVDNLEDVVGGHIYVGLLLIFGGVWHILVKPLAWAKKLLIFSGEAILSYSLGGIALAGFVAAYFCAVNTLAYPVEFYGPPLEVKFWYLRPYFADTIQLPYGNYTSRAWLANTHFFLAFFFLQGHLWHALRAIGFDFKRVEKALSAVETSS

Gene
isiA
Protein
Iron stress-induced chlorophyll-binding protein
Organism
Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)
Length
344 amino acids
Function
Functions as an antenna for photosystem I (PSI) under iron-limiting conditions, when phycobilisomes disappear. In the (PSI)3(Isi3)18 complex most of the harvested energy is probably used by PSI; in other PSI-containing supercomplexes a large part of the energy will probably not be used for light harvesting, but rather is dissipated to protect the organism from light damage.
Similarity
Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
Mass
37.667 kDa
Sequence
MQTYDNPNIKYDWWAGNARFANLSGLFIGAHVAQAALTTLWAGAFTWFEISRYKPEIPMGEQGLILLPHLATLGFGVGVSGQVVNTYPYFVIGALHLISSAVLGAGALFHTFKGPRNLKNTTGSARKFHFEWNDPKQLGLILGHHLLFLGMAALLLVGKAMFWGGLYDATTQVVRVVNHPTLNPFVIYGYQTHFASVNNLEDLVGGHIYVGLILIGGGIWHIVKEPLPWAKKLLIFSGEAILSYSLGGIALAGFVAAYFCAVNTLAYPVEFYGAPLELKFGVTPYFADTVKLADGGYSARAWLANAHFFLAFFFLQGHLWHALRAIGVDFRQIEKSLNAISSAE

Gene
isiA
Protein
Iron stress-induced chlorophyll-binding protein
Organism
Synechococcus elongatus (strain PCC 7942)
Length
342 amino acids
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.
Similarity
Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
Mass
36.976 kDa
Sequence
MQTYNNPEVTYDWWAGNARFANLSGLFIAAHVAQAALIMFWAGAFTLYEISWLTADQSMGEQGLILLPHLATLGLGVGDGGQVTDTYPLFVVGAVHLIASAVLGAGALFHTFRAPSDLAAASGAAKRFHFDWNDPKQLGLILGHHLLFLGVGALLLVAKATTWGGLYDAASQTVRLVTEPTLNPAVIYGYQTHFASIDNLEDLVGGHVYVGVMLIAGGIWHILVPPFQWTKKVLIYSGEAILSYSLGGIALAGFVAAYFCAVNTLAYPVEFYGAPLEIKLGVTPYFADTVQLPFGAHTPRAWLSNAHFFLAFFCLQGHLWHALRAMGFDFRRVEKALSSVEA

Gene
isiA
Protein
Iron stress-induced chlorophyll-binding protein
Organism
Synechococcus sp. (strain ATCC 27264 / PCC 7002 / PR-6)
Length
342 amino acids
Function
Functions as an antenna for photosystem I (PSI) under iron-limiting conditions, when phycobilisomes disappear. In the (PSI)3(Isi3)18 complex most of the harvested energy is probably used by PSI; in other PSI-containing supercomplexes a large part of the energy will probably not be used for light harvesting, but rather is dissipated to protect the organism from light damage.
Similarity
Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
Mass
37.594 kDa
Sequence
MQTYDNPDVKYEWWAGNARFADLSGQFIGAHVAHAALIVFWAGAFTLFEISYFDPTLPMGEQNLILLPHLATLGLGIEGNGAINTEPYFVIGAIHLISSAVLAAGGLFHVLRGPQDLKTATGPARRFHFDWEDPKQLGLILGHHLLLLGLGAFLLVAKAMYFGGLYDTATQTVRLVTEPTLDPAVIYGYQTHFATVDNLEDIVGGHIYVGVLLVAGGIWHILVPPLQWAKKVLLFSGEAILSYSLGAIALAGFVAAYFCAVNTTAYPVEFYGPVLDVKLSIVPYFADTIELPMNEHTSRAWLANAHFFFAFFFLQGHLWHALRAMGFDFRRVEKVLSDPLDA

Gene
isiA
Protein
Iron stress-induced chlorophyll-binding protein
Organism
Synechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1)
Length
342 amino acids
Function
Functions as an antenna for photosystem I (PSI) under iron-limiting conditions, when phycobilisomes disappear. In the (PSI)3(Isi3)18 complex most of the harvested energy is probably used by PSI; in other PSI-containing supercomplexes a large part of the energy will probably not be used for light harvesting, but rather is dissipated to protect the organism from light damage.
Similarity
Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
Mass
36.976 kDa
Sequence
MQTYNNPEVTYDWWAGNARFANLSGLFIAAHVAQAALIMFWAGAFTLYEISWLTADQSMGEQGLILLPHLATLGLGVGDGGQVTDTYPLFVVGAVHLIASAVLGAGALFHTFRAPSDLAAASGAAKRFHFDWNDPKQLGLILGHHLLFLGVGALLLVAKATTWGGLYDAASQTVRLVTEPTLNPAVIYGYQTHFASIDNLEDLVGGHVYVGVMLIAGGIWHILVPPFQWTKKVLIYSGEAILSYSLGGIALAGFVAAYFCAVNTLAYPVEFYGAPLEIKLGVTPYFADTVQLPFGAHTPRAWLSNAHFFLAFFCLQGHLWHALRAMGFDFRRVEKALSSVEA

Gene
isiA
Protein
Iron stress-induced chlorophyll-binding protein
Organism
Synechocystis sp. (strain PCC 6803 / Kazusa)
Length
342 amino acids
Function
Functions as an antenna for photosystem I (PSI) under iron-limiting conditions, when phycobilisomes disappear. In the (PSI)3(Isi3)18 complex most of the harvested energy is probably used by PSI; in other PSI-containing supercomplexes a large part of the energy will probably not be used for light harvesting, but rather is dissipated to protect the organism from light damage.
Similarity
Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
Mass
37.221 kDa
Sequence
MQTYGNDTVQYEWWAGNARFADQSGLFIAAHVAQAALTAFWAGAFTLFEISRFDPTQAMGDQGLILLPHLATLGWGVGDGGQIVDTYPYFVIGSIHLIASAVLGAGALFHTLRAPADLSTLKGQGKKFHFTWENPQQLGIILGHHLLFLGAGALLLAGKAMYWGGLYDATTQTVRLVSQPTLDPLVIYGYQTHFASISSLEDLVGGHIFVGFLLIGGGIWHILVPPLGWAKKVLLFSGEAILSYSLGGIALAGFVAAYFCAVNTLAYPPEFYGPPLAIKLGIFPYFADTVELPMHAHTSRAWLANAHFFLAFFFLQGHLWHALRALGFDFKRVEQAFDSLQT