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SSB1

Gene
SSB1
Protein
Ribosome-associated molecular chaperone SSB1
Organism
Chaetomium thermophilum (strain DSM 1495 / CBS 144.50 / IMI 039719)
Length
614 amino acids
Function
Ribosome-bound, Hsp70-type chaperone that assists in the cotranslational folding of newly synthesized proteins in the cytosol. Stimulates folding by interacting with nascent chains, binding to short, largely hydrophobic sequences exposed by unfolded proteins, thereby stabilizing longer, more slowly translated, and aggregation-prone nascent polypeptides and domains that cannot fold stably until fully synthesized. The Hsp70-protein substrate interaction depends on ATP-binding and on allosteric regulation between the NBD and the SBD. The ATP-bound state is characterized by a fast exchange rate of substrate (low affinity state), while in the ADP-bound state exchange is much slower (high affinity state). During the Hsp70 cycle, the chaperone switches between the ATP-bound state (open conformation) and the ADP-bound state (closed conformation) by major conformational rearrangements involving mainly the lid domain. Ssb cooperates with a specific Hsp40/Hsp70 co-chaperone termed the ribosome-associated complex (RAC), which stimulates the ATPase activity of the ribosome-associated pool of Ssbs and switches it to the high affinity substrate binding state. Hsp110 chaperone SSE1 and FES1 act as nucleotide exchange factors that cause substrate release.
Similarity
Belongs to the heat shock protein 70 family. Ssb-type Hsp70 subfamily.
Mass
67.03 kDa
Sequence
MAEEVYDGAIGIDLGTTYSCVAVYEGTNVEIIANEQGNFTTPSFVSFTENERLIGEAAKNQAAMNPANTIFDVKRLIGRRFDDPTVKKDMESWPFKVVDDNGNPKVEVQYLGQTHTFSPQEISAMVLTKMKEIAETKLGKKVEKAVITVPAYFNDNQRQATKDAGAIAGLNVLRIINEPTAAAIAYGLGSGKSDKERNVLIYDLGGGTFDVSLLNIQGGVFTVKATAGDTHLGGQDFDTNLLEYCKKEFTRKTKKDLSGDARALRRLRTACERAKRTLSSGAQTTIEIDSLFDGEDFNIQITRARFEDLNAKAFAGTLEPVAQVLKDAGIEKHQVDEIVLVGGSTRIPRIQKLLSEFFDGKKLEKSINPDEAVAYGAAVQAGILSGKATSADTSDLLLLDVVPLSLGVAMEGNIFAPVVPRGQTVPTIKKRTFTTVADNQQTVQFPVYQGERVNCEDNTLLGEFTLAPIPPMKAGEPVLEVVFEVDVNGILKVTATEKTSGRSANITIANSVGKLSTDEIEKMISDAEKFKSKDEAFSKRFEAKQQLESYISRVEEIISDPTLSLKLKRGQKDKIEQALSEAMAQLEIEDSTADELKKKELALKRLVTKAMASR

Gene
SSB1
Protein
Heat shock protein SSB1
Organism
Magnaporthe oryzae (strain 70-15 / ATCC MYA-4617 / FGSC 8958)
Length
614 amino acids
Function
Chaperone that interacts with the histone acetyltransferase HAT1 and mediates its translocation from the nucleus to the cytoplasm during germination and starvation conditions. Within the cytoplasm, HAT1 regulates autophagy via acetylation of the autophagy-related proteins ATG3 and ATG9.
Similarity
Belongs to the heat shock protein 70 family.
Mass
66.666 kDa
Sequence
MSTEVYDGAIGIDLGTTYSCVATYEGSNVEIIANEQGSFTTPSFVSFTADERLIGEAAKNQAAMNPANTVFDVKRLIGRRFDDPTVKKDMESWPFKVVDEDGNPKVEVEYLGTTHKFSPQEISAMVLVKMKEIAEAKIGKKVEKAVITVPAYFNDNQRQSTKDAGAISGLNVLRIINEPTAAAIAYGLGSGKSEKERNVLIYDLGGGTFDVSLLNIQGGVFTVKATAGDTHLGGQDFDTNLLDHCKKDFQRKTKKDLSGDARALRRLRTACERAKRTLSNGTQTTLEIDSLFDGEDFSLQITRAKFEELNQTAFKGTLDPVTQVLKDAGVDKAAVDEIVLVGGSTRIPKIQKLLSDYFGGKKLEKSINPDEAVAYGAAVQAGILSGKATSAETADLLLLDVVPLSLGVAMEGNIFAPVVPRGTTVPTLKKRSFTTVADQQQTVQFPVYQGERTNCSENVSLGEFTLAPIPPMRAGEPVLEVVFEVDVNGILKVTATEKTSGRSANITIANSVGKLSTSEIENMISEAEKYKTNDEEFTKKHEAKQQLESYIARVEDIISDPTLALKLKRGQKEKIENTMSEAMAQLELGESTADDLKKKELALKRAVTKAMSSR

Gene
SSB1
Protein
Ribosome-associated molecular chaperone SSB1
Organism
Candida albicans (strain WO-1)
Length
613 amino acids
Function
Ribosome-bound, Hsp70-type chaperone that assists in the cotranslational folding of newly synthesized proteins in the cytosol. Stimulates folding by interacting with nascent chains, binding to short, largely hydrophobic sequences exposed by unfolded proteins, thereby stabilizing longer, more slowly translated, and aggregation-prone nascent polypeptides and domains that cannot fold stably until fully synthesized. The Hsp70-protein substrate interaction depends on ATP-binding and on allosteric regulation between the NBD and the SBD. The ATP-bound state is characterized by a fast exchange rate of substrate (low affinity state), while in the ADP-bound state exchange is much slower (high affinity state). During the Hsp70 cycle, the chaperone switches between the ATP-bound state (open conformation) and the ADP-bound state (closed conformation) by major conformational rearrangements involving mainly the lid domain. Ssb cooperates with a specific Hsp40/Hsp70 co-chaperone termed the ribosome-associated complex (RAC), which stimulates the ATPase activity of the ribosome-associated pool of Ssbs and switches it to the high affinity substrate binding state. Hsp110 chaperone SSE1 and FES1 act as nucleotide exchange factors that cause substrate release.
Similarity
Belongs to the heat shock protein 70 family. Ssb-type Hsp70 subfamily.
Mass
66.479 kDa
Sequence
MADGVFQGAIGIDLGTTYSCVATYDSAVEIIANEQGNRVTPSFVAFTSEERLIGDAAKNQAALNPKNTVFDAKRLIGRAFDDESVQKDIKSWPFKVVESNGQPLIEVEYLDETKTFSPQEISSMVLTKMKEIAEAKIGKKVEKAVVTVPAYFNDAQRQATKDAGAIAGLNVLRIINEPTAAAIAYGLGAGKSEKERHVLIFDLGGGTFDVSLLNITGGVFTVKATAGDTHLGGQDFDTNLLEHFKKEFQKKTGNDISSDARALRRLRTACERAKRSLSSGTQTTVEIDSLFDGEDFSANITRARFEDINSALFKSTLEPVEQVLKDAKISKSQVDEVVLVGGSTRIPKVQKLLSDFFDGKQLEKSINPDEAVAYGAAVQGAILTGQSTNDDTKDLLLLDVIPLSLGVAMQGNVFAPVVPRNTTVPTIKRRTFTTVADHQTTVQFPVYQGERVNCTENTLLGEFDLKNIPPMQAGEPVLEAIFEVDANGILKVTAVEKSTGRSANITISNSIGRLSTEEIEKMISDAEKFKSSDDAFAKRHEQKQKLEAYVASVESTVTDPVLSAKLKKSAKDKIEAALSDALQTLEIEESSADDYRKAELALKRAVTKGMATR

Gene
SSB1
Protein
Ribosome-associated molecular chaperone SSB
Organism
Candida glabrata (strain ATCC 2001 / CBS 138 / JCM 3761 / NBRC 0622 / NRRL Y-65)
Length
613 amino acids
Function
Ribosome-bound, Hsp70-type chaperone that assists in the cotranslational folding of newly synthesized proteins in the cytosol. Stimulates folding by interacting with nascent chains, binding to short, largely hydrophobic sequences exposed by unfolded proteins, thereby stabilizing longer, more slowly translated, and aggregation-prone nascent polypeptides and domains that cannot fold stably until fully synthesized. The Hsp70-protein substrate interaction depends on ATP-binding and on allosteric regulation between the NBD and the SBD. The ATP-bound state is characterized by a fast exchange rate of substrate (low affinity state), while in the ADP-bound state exchange is much slower (high affinity state). During the Hsp70 cycle, the chaperone switches between the ATP-bound state (open conformation) and the ADP-bound state (closed conformation) by major conformational rearrangements involving mainly the lid domain. Ssb cooperates with a specific Hsp40/Hsp70 co-chaperone termed the ribosome-associated complex (RAC), which stimulates the ATPase activity of the ribosome-associated pool of Ssbs and switches it to the high affinity substrate binding state. Hsp110 chaperone SSE1 and FES1 act as nucleotide exchange factors that cause substrate release.
Similarity
Belongs to the heat shock protein 70 family. Ssb-type Hsp70 subfamily.
Mass
66.396 kDa
Sequence
MADGVFQGAIGIDLGTTYSCVATYESSVEIIANEQGNRVTPSFVAFTPEERLIGDAAKNQAALNPKNTVFDAKRLIGRRFDEESVQNDMKTWPFKVVDVDGAPVIEVEYLGENKQFSPQEISSMVLTKMKEIAEAKIGKKVEKAVITVPAYFNDAQRQATKDAGAISGLNVLRIINEPTAAAIAYGLGAGKSDKERHVLIFDLGGGTFDVSLLHIAGGVYTVKSTSGNTHLGGQDFDTNLLEHFKGEFKKKTGLDISNDARALRRLRTAAERAKRTLSSVTQTTVEVDSLFEGEDFEASLTRARFEDLNAALFKSTLEPVEQVLKDAKISKSQIDEVVLVGGSTRIPKVQKLLSDYFDGKQLEKSINPDEAVAYGAAVQGAILTGQSTSDETKDLLLLDVAPLSLGVGMQGDIFGVVVPRNTTVPTIKRRTFTTVGDNQTTVQFPVYQGERVNCKENTLLGEFDLKNIPPMPAGEPVLEAIFEVDANGILKVTAVEKSTGKSANITISNAVGRLSSEDIEKMVNQAEEFKAADEAFAKRHEAKQRLESYVASIEQTVTDPVLSSKLKRGSKTKIEAALADALSALQIEDGSAEEYRKAEVGLKRVVTKAMSSR

Gene
SSB1
Protein
Ribosome-associated molecular chaperone SSB1
Organism
Kluyveromyces delphensis
Length
613 amino acids
Function
Ribosome-bound, Hsp70-type chaperone that assists in the cotranslational folding of newly synthesized proteins in the cytosol. Stimulates folding by interacting with nascent chains, binding to short, largely hydrophobic sequences exposed by unfolded proteins, thereby stabilizing longer, more slowly translated, and aggregation-prone nascent polypeptides and domains that cannot fold stably until fully synthesized. The Hsp70-protein substrate interaction depends on ATP-binding and on allosteric regulation between the NBD and the SBD. The ATP-bound state is characterized by a fast exchange rate of substrate (low affinity state), while in the ADP-bound state exchange is much slower (high affinity state). During the Hsp70 cycle, the chaperone switches between the ATP-bound state (open conformation) and the ADP-bound state (closed conformation) by major conformational rearrangements involving mainly the lid domain. Ssb cooperates with a specific Hsp40/Hsp70 co-chaperone termed the ribosome-associated complex (RAC), which stimulates the ATPase activity of the ribosome-associated pool of Ssbs and switches it to the high affinity substrate binding state. Hsp110 chaperone SSE1 and FES1 act as nucleotide exchange factors that cause substrate release.
Similarity
Belongs to the heat shock protein 70 family. Ssb-type Hsp70 subfamily.
Mass
66.428 kDa
Sequence
MADGVFQGAIGIDLGTTYSCVATYESSVEIIANEQGNRVTPSFVAFTPEERLIGDAAKNQAALNPKNTVFDAKRLIGRRFDEESVQNDMKTWPFKVVDVEGAPVIEVEYLGETKQFSPQEISSMVLTKMKEIAEAKIGKKVEKAVITVPAYFNDAQRQATKDAGAISGLNVLRIINEPTAAAIAYGLGAGKSDKERHVLIFDLGGGTFDVSLLHIAGGVYTVKSTSGNTHLGGQDFDTNLLEHFKSDFKKKTGLDISNDARALRRLRTAAERAKRTLSSVTQTTVEVDSLFDGEDFEASLTRARFEDLNAALFKSTLEPVEQVLKDAKISKSQIDEVVLVGGSTRIPKVQKLLSDFFDGKQLEKSINPDEAVAYGAAVQGAILTGQSTSDETKDLLLLDVAPLSLGVGMQGDIFGVVVPRNTTVPTIKRRTFTTVGDNQTTVQFPVYQGERVNCKENTLLGEFDLKNIPPMQAGEPVLEAIFEVDANGILKVTAVEKSTGKSANITISNAVGRLSSEDIEKMVNQAEEFKAADEAFAKRHEAKQRLESYVASIEQTVTDPVLSSKLKRGSKTKIEAALADALAALQIEDGSTEEYRKAEVGLKRVVTKAMSSR

Gene
SSB1
Protein
Ribosome-associated molecular chaperone SSB1
Organism
Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37)
Length
613 amino acids
Function
Ribosome-bound, Hsp70-type chaperone that assists in the cotranslational folding of newly synthesized proteins in the cytosol. Stimulates folding by interacting with nascent chains, binding to short, largely hydrophobic sequences exposed by unfolded proteins, thereby stabilizing longer, more slowly translated, and aggregation-prone nascent polypeptides and domains that cannot fold stably until fully synthesized. The Hsp70-protein substrate interaction depends on ATP-binding and on allosteric regulation between the NBD and the SBD. The ATP-bound state is characterized by a fast exchange rate of substrate (low affinity state), while in the ADP-bound state exchange is much slower (high affinity state). During the Hsp70 cycle, the chaperone switches between the ATP-bound state (open conformation) and the ADP-bound state (closed conformation) by major conformational rearrangements involving mainly the lid domain. Ssb cooperates with a specific Hsp40/Hsp70 co-chaperone termed the ribosome-associated complex (RAC), which stimulates the ATPase activity of the ribosome-associated pool of Ssbs and switches it to the high affinity substrate binding state. Hsp110 chaperone SSE1 and FES1 act as nucleotide exchange factors that cause substrate release.
Similarity
Belongs to the heat shock protein 70 family. Ssb-type Hsp70 subfamily.
Mass
66.244 kDa
Sequence
MAEGVFPGAIGIDLGTTYSCVATYENSVEIIANEQGNRVTPSFVAFTPEERLIGDAAKNQAALNPKNTVFDAKRLIGRRFDEESVQSDMKTWPFKVIDSNDAPLIEVEYLGETKTFSPQEISSMVLTKMKEIAEAKIGKKVEKAVVTVPAYFNDAQRQATKDAGAIAGLNVLRIINEPTAAAIAYGLGAGKSDKERHVLIFDLGGGTFDVSLLHIAGGVYTVKSTSGNTHLGGQDFDTNLLEHFKTEFKKKTGLDISGDARALRRLRTAAERAKRTLSSVAQTTVEVDSLFDGEDFEATITRARFEDINAALFKSTLEPVEQVLKDAKIAKSQIDEVVLVGGSTRIPKVQKLLSDFFEGKQLEKSINPDEAVAYGAAVQGAILTGQSTSDETKDLLLLDVAPLSLGVGMAGDVFGVVVPRNTTVPTIKRRTFTTVADHQTTVTFPVYQGERVNCKENTLLGEFDLKGVPPMPAGEPVLEAIFEVDANGILKVTAVEKSTGKSANITISNAIGRLSSEEIEQMVNQAEEFKAADEAFAKKHEARQRLESYISSVEQTVTDPVLSAKIKRNAKAKVEAALAEAFSTLQIEDASTDDLRKAEVGLKRAVTKAMSTR

Gene
SSB1
Protein
Ribosome-associated molecular chaperone SSB1
Organism
Kluyveromyces marxianus
Length
613 amino acids
Function
Ribosome-bound, Hsp70-type chaperone that assists in the cotranslational folding of newly synthesized proteins in the cytosol. Stimulates folding by interacting with nascent chains, binding to short, largely hydrophobic sequences exposed by unfolded proteins, thereby stabilizing longer, more slowly translated, and aggregation-prone nascent polypeptides and domains that cannot fold stably until fully synthesized. The Hsp70-protein substrate interaction depends on ATP-binding and on allosteric regulation between the NBD and the SBD. The ATP-bound state is characterized by a fast exchange rate of substrate (low affinity state), while in the ADP-bound state exchange is much slower (high affinity state). During the Hsp70 cycle, the chaperone switches between the ATP-bound state (open conformation) and the ADP-bound state (closed conformation) by major conformational rearrangements involving mainly the lid domain. Ssb cooperates with a specific Hsp40/Hsp70 co-chaperone termed the ribosome-associated complex (RAC), which stimulates the ATPase activity of the ribosome-associated pool of Ssbs and switches it to the high affinity substrate binding state. Hsp110 chaperone SSE1 and FES1 act as nucleotide exchange factors that cause substrate release.
Similarity
Belongs to the heat shock protein 70 family. Ssb-type Hsp70 subfamily.
Mass
66.087 kDa
Sequence
MAEGVFPGAIGIDLGTTYSCVATYENSVEIIANEQGNRVTPSFVAFTPEERLIGDAAKNQAALNPKNTVFDAKRLIGRRFDEESVQSDMKTWPFKVIDSNGAPLIEVEYLGETKTFSPQEISSMVLTKMKEIAEAKIGKKVEKAVVTVPAYFNDAQRQATKDAGAIAGLNVLRIINEPTAAAIAYGVGAGNSEKERHVLIFDLGGGTFDVSLLHIAGGVYTVKSTSGNTHLGGQDFDTNLLEHFKTEFKKKTGADISGDARALRRLRTAAERAKRTLSSVAQTTVEVDSLFDGEDFEATITRARFEDINAALFKSTLEPVEQVLKDAKISKSQIDEVVLVGGSTRIPKVQKLLSDFFDGKQLEKSINPDEAVAYGAAVQGAILTGQSTSDETKDLLLLDVAPLSLGVGMAGDVFGVVVPRNTTVPTIKRRTFTTVADHQTTVTFPVYQGERVNCKENTLLGEFDLKGVPPMPAGEPVLEAIFEVDANGILKVTAVEKSTGKSANITISNAIGRLSSEEIEQMVNQAEEFKAADEAFAKKHEARQRLESYISSVQQTVTDPVLSAKIKRNAKAKVEAALADAFSTLQIEDASADDLRKAEVGLKRAVTKAMSTR

Gene
SSB1
Protein
Ribosome-associated molecular chaperone SSB1
Organism
Ashbya gossypii (strain ATCC 10895 / CBS 109.51 / FGSC 9923 / NRRL Y-1056)
Length
613 amino acids
Function
Ribosome-bound, Hsp70-type chaperone that assists in the cotranslational folding of newly synthesized proteins in the cytosol. Stimulates folding by interacting with nascent chains, binding to short, largely hydrophobic sequences exposed by unfolded proteins, thereby stabilizing longer, more slowly translated, and aggregation-prone nascent polypeptides and domains that cannot fold stably until fully synthesized. The Hsp70-protein substrate interaction depends on ATP-binding and on allosteric regulation between the NBD and the SBD. The ATP-bound state is characterized by a fast exchange rate of substrate (low affinity state), while in the ADP-bound state exchange is much slower (high affinity state). During the Hsp70 cycle, the chaperone switches between the ATP-bound state (open conformation) and the ADP-bound state (closed conformation) by major conformational rearrangements involving mainly the lid domain. Ssb cooperates with a specific Hsp40/Hsp70 co-chaperone termed the ribosome-associated complex (RAC), which stimulates the ATPase activity of the ribosome-associated pool of Ssbs and switches it to the high affinity substrate binding state. Hsp110 chaperone SSE1 and FES1 act as nucleotide exchange factors that cause substrate release.
Similarity
Belongs to the heat shock protein 70 family. Ssb-type Hsp70 subfamily.
Mass
66.253 kDa
Sequence
MAEGVFSGAIGIDLGTTYSCVATYESSVEIIANEQGNRVTPSFVAFTPEERLIGDAAKNQAALNPRNTVFDAKRLIGRRFDDESVQSDMKTWPFKVIDANGSPMIEVEYLGETKSFSPQEISAMVLTKMKEIAEAKIGKKVEKAVITVPAYFNDAQRQATKDAGAIAGLNVLRIINEPTAAAIAYGLGAGKSEKERHVLIFDLGGGTFDVSLLNIAGGVYTVKSTSGNTHLGGQDFDTNLLEHFKAEFKKKTGLDISGDARALRRLRTAAERAKRTLSSVTQTTVEVDSLFEGEDFETSITRARFEDINAALFKSTLEPVEQVLKDAQISKSQIDEVVLVGGSTRIPKVQKLLSDFFEGKQLEKSINPDEAVAYGAAVQAAILTGSNLSDDTKDLLLLDVAPLSLGVAMQGDVFACVIPRNTTVPTIKRRTFTTVHDGQTTVTFPVYQGERVNCKDNTLLGEFDLKGIPPLPAGEPVLEAIFEVDANGILKVTAVEKSTGKTANITISNAIGRLSSEDIEKMVSQAEEFKAADEAFAKRHEARQRLESYVSSIEQTVSDPVLSAKMKKGAKSKVEAALADAFSALQIEESSAEDYRKAEIGLKRVVTKAMATR

Gene
SSB1
Protein
Ribosome-associated molecular chaperone SSB1
Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Length
613 amino acids
Function
Ribosome-bound, Hsp70-type chaperone that assists in the cotranslational folding of newly synthesized proteins in the cytosol. Stimulates folding by interacting with nascent chains, binding to short, largely hydrophobic sequences exposed by unfolded proteins, thereby stabilizing longer, more slowly translated, and aggregation-prone nascent polypeptides and domains that cannot fold stably until fully synthesized. The Hsp70-protein substrate interaction depends on ATP-binding and on allosteric regulation between the NBD and the SBD. The ATP-bound state is characterized by a fast exchange rate of substrate (low affinity state), while in the ADP-bound state exchange is much slower (high affinity state). During the Hsp70 cycle, the chaperone switches between the ATP-bound state (open conformation) and the ADP-bound state (closed conformation) by major conformational rearrangements involving mainly the lid domain. Ssb cooperates with a specific Hsp40/Hsp70 co-chaperone termed the ribosome-associated complex (RAC), which stimulates the ATPase activity of the ribosome-associated pool of Ssbs and switches it to the high affinity substrate binding state. Hsp110 chaperone SSE1 and FES1 act as nucleotide exchange factors that cause substrate release.
Similarity
Belongs to the heat shock protein 70 family. Ssb-type Hsp70 subfamily.
Mass
66.602 kDa
Sequence
MAEGVFQGAIGIDLGTTYSCVATYESSVEIIANEQGNRVTPSFVAFTPEERLIGDAAKNQAALNPRNTVFDAKRLIGRRFDDESVQKDMKTWPFKVIDVDGNPVIEVQYLEETKTFSPQEISAMVLTKMKEIAEAKIGKKVEKAVITVPAYFNDAQRQATKDAGAISGLNVLRIINEPTAAAIAYGLGAGKSEKERHVLIFDLGGGTFDVSLLHIAGGVYTVKSTSGNTHLGGQDFDTNLLEHFKAEFKKKTGLDISDDARALRRLRTAAERAKRTLSSVTQTTVEVDSLFDGEDFESSLTRARFEDLNAALFKSTLEPVEQVLKDAKISKSQIDEVVLVGGSTRIPKVQKLLSDFFDGKQLEKSINPDEAVAYGAAVQGAILTGQSTSDETKDLLLLDVAPLSLGVGMQGDMFGIVVPRNTTVPTIKRRTFTTCADNQTTVQFPVYQGERVNCKENTLLGEFDLKNIPMMPAGEPVLEAIFEVDANGILKVTAVEKSTGKSSNITISNAVGRLSSEEIEKMVNQAEEFKAADEAFAKKHEARQRLESYVASIEQTVTDPVLSSKLKRGSKSKIEAALSDALAALQIEDPSADELRKAEVGLKRVVTKAMSSR

Gene
SSB1
Protein
Ribosome-associated molecular chaperone SSB1
Organism
Zygosaccharomyces rouxii (strain ATCC 2623 / CBS 732 / NBRC 1130 / NCYC 568 / NRRL Y-229)
Length
613 amino acids
Function
Ribosome-bound, Hsp70-type chaperone that assists in the cotranslational folding of newly synthesized proteins in the cytosol. Stimulates folding by interacting with nascent chains, binding to short, largely hydrophobic sequences exposed by unfolded proteins, thereby stabilizing longer, more slowly translated, and aggregation-prone nascent polypeptides and domains that cannot fold stably until fully synthesized. The Hsp70-protein substrate interaction depends on ATP-binding and on allosteric regulation between the NBD and the SBD. The ATP-bound state is characterized by a fast exchange rate of substrate (low affinity state), while in the ADP-bound state exchange is much slower (high affinity state). During the Hsp70 cycle, the chaperone switches between the ATP-bound state (open conformation) and the ADP-bound state (closed conformation) by major conformational rearrangements involving mainly the lid domain. Ssb cooperates with a specific Hsp40/Hsp70 co-chaperone termed the ribosome-associated complex (RAC), which stimulates the ATPase activity of the ribosome-associated pool of Ssbs and switches it to the high affinity substrate binding state. Hsp110 chaperone SSE1 and FES1 act as nucleotide exchange factors that cause substrate release.
Similarity
Belongs to the heat shock protein 70 family. Ssb-type Hsp70 subfamily.
Mass
66.73 kDa
Sequence
MAEGVFQGAIGIDLGTTYSCVATYESSVEIIANEQGNRVTPSFVAFTPEERLIGDAAKNQAALNPENTVFDAKRLIGRRFDDESVQKDRKTWPFKLIDVEGNPVVEVQYLGETKTFSPQEISSMVLTKMKEIAEAKIGQKVEKAVITVPAYFNDAQRQATKDAGSISGLNVLRIINEPTAAAIAYGLGAGKSEKERHVLIFDLGGGTFDVSLLHIAGGVYTVKSTSGNTHLGGQDFDTNMLEHFKNEFKKKTGNDISGDARALRRLRTACERAKRTLSSVTQTTIEVDSLYNGDDFETSITRARFEDLNSSLFKSTLEPVEQVLKDAKVPKTEIDEVVLVGGSTRIPKVQKMLSDFFEGKQLEKSINPDEAVAYGAAVQGAILTGQSTSEDTKDLLLLDVAPLSLGVGMQGDIFGIVVPRNTTVPTIKRRTFTTVADHQSTVQFPVYQGERVNCKENTLLGEFDLKNIPPMQAGEPVLEAIFEVDANGILKVTAVEKSTGKSANITISNAVGRLSSDEIEKMVNQAEEFKAADEAFAKKHEARQRLESYVASIEQQVTDPVLSSKLKRGSKTKIESALSDALASLEIQDASTDDLRKAEVGLKRVVTKAMSSR

Gene
ssb1
Protein
Replication factor A protein 1
Organism
Schizosaccharomyces pombe (strain 972 / ATCC 24843)
Length
609 amino acids
Function
As part of the replication protein A (RPA/RP-A), a single-stranded DNA-binding heterotrimeric complex, may play an essential role in DNA replication, recombination and repair. Binds and stabilizes single-stranded DNA intermediates, preventing complementary DNA reannealing and recruiting different proteins involved in DNA metabolism.
Similarity
Belongs to the replication factor A protein 1 family.
Mass
68.197 kDa
Sequence
MAERLSVGALRIINTSDASSFPPNPILQVLTVKELNSNPTSGAPKRYRVVLSDSINYAQSMLSTQLNHLVAENKLQKGAFVQLTQFTVNVMKERKILIVLGLNVLTELGVMDKIGNPAGLETVDALRQQQNEQNNASAPRTGISTSTNSFYGNNAAATAPAPPPMMKKPAAPNSLSTIIYPIEGLSPYQNKWTIRARVTNKSEVKHWHNQRGEGKLFSVNLLDESGEIRATGFNDQVDAFYDILQEGSVYYISRCRVNIAKKQYTNVQNEYELMFERDTEIRKAEDQTAVPVAKFSFVSLQEVGDVAKDAVIDVIGVLQNVGPVQQITSRATSRGFDKRDITIVDQTGYEMRVTLWGKTAIEFSVSEESILAFKGVKVNDFQGRSLSMLTSSTMSVDPDIQESHLLKGWYDGQGRGQEFAKHSVISSTLSTTGRSAERKNIAEVQAEHLGMSETPDYFSLKGTIVYIRKKNVSYPACPAADCNKKVFDQGGSWRCEKCNKEYDAPQYRYIITIAVGDHTGQLWLNVFDDVGKLIMHKTADELNDLQENDENAFMNCMAEACYMPYIFQCRAKQDNFKGEMRVRYTVMSINQMDWKEESKRLINFIESAQ

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Streptomyces avermitilis (strain ATCC 31267 / DSM 46492 / JCM 5070 / NBRC 14893 / NCIMB 12804 / NRRL 8165 / MA-4680)
Length
202 amino acids
Mass
20.244 kDa
Sequence
MAGETVITVVGNLVDDPELRFTPSGAAVAKFRVASTPRTFDRQTNEWKDGESLFLTCSVWRQAAENVAESLQRGMRVIVQGRLKQRSYEDREGVKRTVYELDVEEVGASLKNATAKVTKTTGRSGQGGQGGYGGGGGGQQGGGWGGGSGGAPQGGGAPADDPWATGTPAGGNQGGGGGGGWGGSSGGSSGGSGGGYSDEPPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Tropheryma whipplei (strain TW08/27)
Length
186 amino acids
Mass
20.313 kDa
Sequence
MDATVTVVGNLTADPELRYTATGAAVVNMTIASTPRMYDRQSGEWKDGEPLFLRGILWREYAINAAASLAKGMRVVAVGKLKQRNYETREGDRRTSVELEIDEIGPTLRYATAKCSRATQAGHGVSPDPWADSQTGQGIDSHTTRSEEITENAKNGEGAGKNELNKKVLVGDNVSYEDFDSDEVPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Tropheryma whipplei (strain Twist)
Length
186 amino acids
Mass
20.299 kDa
Sequence
MDATVTVVGNLTADPELRYTATGAAVVNMTIASTPRMYDRQSGEWKDGEPLFLRGILWREYAINAAASLAKGMRVVAVGKLKQRNYETREGDRRTSVELEIDEIGPTLRYATAKCSRATQAGHGVSPDPWADSQGSQGIDSHTTRSEEITENAKNGEGAGKNELNKKVLVGDNVSYEDFDSDEVPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Listeria innocua serovar 6a (strain ATCC BAA-680 / CLIP 11262)
Length
179 amino acids
Function
Plays an important role in DNA replication, recombination and repair. Binds to ssDNA and to an array of partner proteins to recruit them to their sites of action during DNA metabolism.
Mass
19.604 kDa
Sequence
MMNRVVLVGRLTKDPELRYTPAGVAVATFTLAVNRTFTNQQGEREADFINCVVWRKPAENVANFLKKGSMAGVDGRVQTRNYEGNDGKRVYVTEIVAESVQFLEPRNSNGGGGNNNYQGGNNNNNYNNGGNNFGQAPTNNGGFGQDQQQSQNQNYQSTNNDPFASDGKPIDISDDDLPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Listeria monocytogenes serovar 1/2a (strain ATCC BAA-679 / EGD-e)
Length
178 amino acids
Function
Plays an important role in DNA replication, recombination and repair. Binds to ssDNA and to an array of partner proteins to recruit them to their sites of action during DNA metabolism.
Mass
19.493 kDa
Sequence
MMNRVVLVGRLTKDPELRYTPAGVAVATFTLAVNRTFTNQQGEREADFINCVVWRKPAENVANFLKKGSMAGVDGRVQTRNYEGNDGKRVYVTEIVAESVQFLEPRNSNGGGGNNYQSGNNNNNYNSGGNNFGQAPTNNGGFGQDQQQSQNQNYQSTNNDPFASDGKPIDISDDDLPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Streptococcus agalactiae serotype III (strain NEM316)
Length
163 amino acids
Function
Plays an important role in DNA replication, recombination and repair. Binds to ssDNA and to an array of partner proteins to recruit them to their sites of action during DNA metabolism.
Mass
18.166 kDa
Sequence
MINNVVLVGRMTRDAELRYTPSNQAVATFSLAVNRNFKNQSGEREADFINCVIWRQQAENLANWAKKGALVGITGRIQTRNYENQQGQRVYVTEVVAESFQLLESRATREGGSPNSYNNGGYNNAPSNNSYSASSQQTPNFSRDESPFGNSNPMDISDDDLPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Streptococcus agalactiae serotype V (strain ATCC BAA-611 / 2603 V/R)
Length
163 amino acids
Function
Plays an important role in DNA replication, recombination and repair. Binds to ssDNA and to an array of partner proteins to recruit them to their sites of action during DNA metabolism.
Mass
18.166 kDa
Sequence
MINNVVLVGRMTRDAELRYTPSNQAVATFSLAVNRNFKNQSGEREADFINCVIWRQQAENLANWAKKGALVGITGRIQTRNYENQQGQRVYVTEVVAESFQLLESRATREGGSPNSYNNGGYNNAPSNNSYSASSQQTPNFSRDESPFGNSNPMDISDDDLPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Chlorobaculum tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS)
Length
162 amino acids
Mass
17.805 kDa
Sequence
MARGLNKVMLIGHLGNDPERRETASGQSVVNFTLATSEGFKDSSGNLQERTEWHRIVAWGKLADICSQYLKKGRQVYIEGRLQTRSWDDNKTGDKKYATEIVCTDMQMLGAKDSGGGTSDASYSQNRPSYSRPSRPEPSSGNYGASPSSGGAQEFEKDDLPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Staphylococcus aureus (strain MSSA476)
Length
156 amino acids
Mass
17.674 kDa
Sequence
MLNRTILVGRLTRDPELRTTQSGVNVASFTLAVNRTFTNAQGEREADFINIIVFKKQAENVNKYLSKGSLAGVDGRLQTRNYENKEGQRVYVTEVVADSIQFLEPKNTDDNQQDLYQQQAQQTRGQSQYSNNKPVKDNPFANANCPIEIDDNDLPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145)
Length
156 amino acids
Mass
16.833 kDa
Sequence
MNETMICAVGNVATTPVFRDLANGPSVRFRLAVTARYWDREKNAWTDGHTNFFTVWANRQLATNASGSLAVGDPVVVQGRLKVRTDVREGQSRTSADIDAVAIGHDLARGTAAFRRTARTEASTSPPRPEPNWEVPAGGTPGEPVPEQRPDPVPVG

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Lactococcus lactis subsp. lactis (strain IL1403)
Length
150 amino acids
Function
Plays an important role in DNA replication, recombination and repair. Binds to ssDNA and to an array of partner proteins to recruit them to their sites of action during DNA metabolism.
Mass
16.644 kDa
Sequence
MINNVVLVGRLTRDPELRHTPQNQAVGTFGLAVNRQFKNANGEREADFINCVIWRQQAENLAKFAKKGALIGITGRIQTRNYENQQGQKVYVTEVVADTFQMLESNKTQGQQTSKPQAQNKKPQAPDPFKAPAADPFAGGTEISDDDLPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Xylella fastidiosa (strain 9a5c)
Length
136 amino acids
Mass
15.384 kDa
Sequence
MASLNKMQLIGNLGADPDIRYMQDGTPTVTVSVATTDTWKDKDTGNKEEKTEWHRVVFFGGLAEIVGEFLKKGSQIYVEGALRSRNWTDKEGNKRYTTEIMAKEMQMLGKKQDNNKVGNARHGDALPADEDDYYDF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Streptococcus pyogenes serotype M6 (strain ATCC BAA-946 / MGAS10394)
Length
131 amino acids
Mass
14.788 kDa
Sequence
MYNKVIAIGRLVAKPELVKTATDKHVARLSLAVNRRFKNASGEREADFISVVVWGKLAETLVSYASKGSLMSIDGELRTRKYDKDGQVHYVTEVLCQSFQLLESRAQRAMRENNVTNDLVDLVLEEDTLPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Streptococcus pyogenes serotype M18 (strain MGAS8232)
Length
130 amino acids
Mass
14.756 kDa
Sequence
MINNVVLIGRLTKDVELRYTPSQVACAQFTLAVNRNFKNQDGQKEADFINCVIWRKSAENLSNWAKKGQLIAITGRIQTRNYENQQGQRVYVTEVVAESFQILEKRDNTANTSSLADSMPDYGPEPDLPF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)
Length
119 amino acids
Mass
13.254 kDa
Sequence
MSINIVTLVGRVGTDPDIKYFESGSVKCRLTLAVNRRSKNDKPDWFTLELWDKTAEVAGNYVRKGSLIGVKGSLKFDSWSDRQTGVNRSTPVIRVDQLELLGSKQDRDGGSSDFAPENF

Gene
ssb1
Protein
Single-stranded DNA-binding protein
Organism
Anabaena variabilis
Length
119 amino acids
Mass
13.254 kDa
Sequence
MSINIVTLVGRVGTDPDIKYFESGSVKCRLTLAVNRRSKNDKPDWFTLELWDKTAEVAGNYVRKGSLIGVKGSLKFDSWSDRQTGVNRSTPVIRVDQLELLGSKQDRDGGSSDFAPENF

Gene
ssb1
Protein
Single-stranded DNA-binding protein 1
Organism
Clostridium acetobutylicum (strain ATCC 824 / DSM 792 / JCM 1419 / LMG 5710 / VKM B-1787)
Length
110 amino acids
Mass
12.524 kDa
Sequence
MNKILLIGRMTKNPSIKQIETTGNNRCNFTIAVNRRVRNTNGENEADFIPVTVWGKTAENVARYMKKGYLVGVSGRLQVRTYQDVDGNRKYITEVVGEEVQFLETKKEAV