![]() | This article may be too technical for most readers to understand.(January 2019) |
Proteasome endopeptidase complex | |||||||||
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![]() Proteasome core particle, di-heptamer, Archaea | |||||||||
Identifiers | |||||||||
EC no. | 3.4.25.1 | ||||||||
CAS no. | 140879-24-9 | ||||||||
Databases | |||||||||
IntEnz | IntEnz view | ||||||||
BRENDA | BRENDA entry | ||||||||
ExPASy | NiceZyme view | ||||||||
KEGG | KEGG entry | ||||||||
MetaCyc | metabolic pathway | ||||||||
PRIAM | profile | ||||||||
PDB structures | RCSB PDB PDBe PDBsum | ||||||||
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Proteasome endopeptidase complex (EC 3.4.25.1, ingensin, macropain, multicatalytic endopeptidase complex, prosome, multicatalytic proteinase (complex), MCP, proteasome, large multicatalytic protease, proteasome organelle, alkaline protease, 26S protease, tricorn proteinase, tricorn protease) is an enzyme. [1] [2] [3] [4] This enzyme catalyses the following chemical reaction
This 20-S protein is composed of 28 subunits arranged in four rings of seven.
Proteasomes are protein complexes which degrade unneeded or damaged proteins by proteolysis, a chemical reaction that breaks peptide bonds. Enzymes that help such reactions are called proteases.
Proteasome subunit alpha type-3 also known as macropain subunit C8 and proteasome component C8 is a protein that in humans is encoded by the PSMA3 gene. This protein is one of the 17 essential subunits that contributes to the complete assembly of 20S proteasome complex.
26S protease regulatory subunit 6A, also known as 26S proteasome AAA-ATPase subunit Rpt5, is an enzyme that in humans is encoded by the PSMC3 gene. This protein is one of the 19 essential subunits of a complete assembled 19S proteasome complex Six 26S proteasome AAA-ATPase subunits together with four non-ATPase subunits form the base sub complex of 19S regulatory particle for proteasome complex.
Proteasome subunit alpha type-4 also known as macropain subunit C9, proteasome component C9, and 20S proteasome subunit alpha-3 is a protein that in humans is encoded by the PSMA4 gene. This protein is one of the 17 essential subunits that contributes to the complete assembly of 20S proteasome complex.
Proteasome subunit beta type-1 also known as 20S proteasome subunit beta-6 is a protein that in humans is encoded by the PSMB1 gene. This protein is one of the 17 essential subunits that contributes to the complete assembly of 20S proteasome complex. In particular, proteasome subunit beta type-1, along with other beta subunits, assemble into two heptameric rings and subsequently a proteolytic chamber for substrate degradation. The eukaryotic proteasome recognized degradable proteins, including damaged proteins for protein quality control purpose or key regulatory protein components for dynamic biological processes. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides.
Proteasome subunit beta type-4 also known as 20S proteasome subunit beta-7 is a protein that in humans is encoded by the PSMB4 gene.
Proteasome subunit beta type-10 as known as 20S proteasome subunit beta-2i is a protein that in humans is encoded by the PSMB10 gene.
Proteasome subunit beta type-3, also known as 20S proteasome subunit beta-3, is a protein that in humans is encoded by the PSMB3 gene. This protein is one of the 17 essential subunits that contribute to the complete assembly of the 20S proteasome complex. In particular, proteasome subunit beta type-2, along with other beta subunits, assemble into two heptameric rings and subsequently a proteolytic chamber for substrate degradation. The eukaryotic proteasome recognizes degradable proteins, including damaged proteins for protein quality control purpose or key regulatory protein components for dynamic biological processes.
Proteasome subunit beta type-8 as known as 20S proteasome subunit beta-5i is a protein that in humans is encoded by the PSMB8 gene. This protein is one of the 17 essential subunits that contributes to the complete assembly of 20S proteasome complex. In particular, proteasome subunit beta type-5, along with other beta subunits, assemble into two heptameric rings and subsequently a proteolytic chamber for substrate degradation. This protein contains "Chymotrypsin-like" activity and is capable of cleaving after large hydrophobic residues of peptide. The eukaryotic proteasome recognized degradable proteins, including damaged proteins for protein quality control purpose or key regulatory protein components for dynamic biological processes. The constitutive subunit beta1, beta2, and beta 5 can be replaced by their inducible counterparts beta1i, 2i, and 5i when cells are under the treatment of interferon-γ. The resulting proteasome complex becomes the so-called immunoproteasome. An essential function of the modified proteasome complex, the immunoproteasome, is the processing of numerous MHC class-I restricted T cell epitopes.
26S protease regulatory subunit 8, also known as 26S proteasome AAA-ATPase subunit Rpt6, is an enzyme that in humans is encoded by the PSMC5 gene. This protein is one of the 19 essential subunits of a complete assembled 19S proteasome complex Six 26S proteasome AAA-ATPase subunits together with four non-ATPase subunits form the base sub complex of 19S regulatory particle for proteasome complex.
26S protease regulatory subunit 7, also known as 26S proteasome AAA-ATPase subunit Rpt1, is an enzyme that in humans is encoded by the PSMC2 gene This protein is one of the 19 essential subunits of a complete assembled 19S proteasome complex. Six 26S proteasome AAA-ATPase subunits together with four non-ATPase subunits form the base sub complex of 19S regulatory particle for proteasome complex.
Proteasome activator complex subunit 1 is a protein that in humans is encoded by the PSME1 gene.
Proteasome subunit alpha type-1 is a protein that in humans is encoded by the PSMA1 gene. This protein is one of the 17 essential subunits that contributes to the complete assembly of 20S proteasome complex.
Proteasome subunit beta type-5 as known as 20S proteasome subunit beta-5 is a protein that in humans is encoded by the PSMB5 gene. This protein is one of the 17 essential subunits that contributes to the complete assembly of 20S proteasome complex. In particular, proteasome subunit beta type-5, along with other beta subunits, assemble into two heptameric rings and subsequently a proteolytic chamber for substrate degradation. This protein contains "chymotrypsin-like" activity and is capable of cleaving after large hydrophobic residues of peptide. The eukaryotic proteasome recognized degradable proteins, including damaged proteins for protein quality control purpose or key regulatory protein components for dynamic biological processes. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides.
26S protease regulatory subunit 4, also known as 26S proteasome AAA-ATPase subunit Rpt2, is an enzyme that in humans is encoded by the PSMC1 gene. This protein is one of the 19 essential subunits of a complete assembled 19S proteasome complex. Six 26S proteasome AAA-ATPase subunits together with four non-ATPase subunits form the base sub complex of 19S regulatory particle for proteasome complex.
Proteasome subunit alpha type-2 is a protein that in humans is encoded by the PSMA2 gene. This protein is one of the 17 essential subunits that contributes to the complete assembly of 20S proteasome complex.
26S protease regulatory subunit 6B, also known as 26S proteasome AAA-ATPase subunit Rpt3, is an enzyme that in humans is encoded by the PSMC4 gene. This protein is one of the 19 essential subunits of a complete assembled 19S proteasome complex Six 26S proteasome AAA-ATPase subunits together with four non-ATPase subunits form the base sub complex of 19S regulatory particle for proteasome complex.
Proteasome activator complex subunit 2 is a protein that in humans is encoded by the PSME2 gene.
Proteasome subunit alpha type-5 also known as 20S proteasome subunit alpha-5 is a protein that in humans is encoded by the PSMA5 gene. This protein is one of the 17 essential subunits that contributes to the complete assembly of 20S proteasome complex.
Proteasome subunit beta type-6 also known as 20S proteasome subunit beta-1 is a protein that in humans is encoded by the PSMB6 gene.