6MSB

Cryo-EM structures and dynamics of substrate-engaged human 26S proteasome


Protein Family Annotation Pfam Database Homepage

ChainsAccessionIdentifierDescriptionCommentsSource
APF1800426S proteasome regulatory subunit RPN2 C-terminal domain (RPN2_C)26S proteasome regulatory subunit RPN2 C-terminal domainThis is the C-terminal domain found in S. cerevisiae Rpn2 (26S proteasome regulatory subunit RPN2) as well as other eukaryotic species. A study revealed that the C-terminal 52 residues of the Rpn2 C-terminal domain are responsible for mediating inter ...This is the C-terminal domain found in S. cerevisiae Rpn2 (26S proteasome regulatory subunit RPN2) as well as other eukaryotic species. A study revealed that the C-terminal 52 residues of the Rpn2 C-terminal domain are responsible for mediating interactions with the ubiquitin-binding subunit Rpn13. Futhermore, the extreme C-terminal 20 or 21 residues of Rpn2 (926-945 or 925-945) of S. cerevisiae, were shown to be equally effective at binding Rpn13. Multiple sequence alignments indicate that Rpn2 orthologs are highly conserved in this C-terminal region and share characteristic acidic, aromatic, and proline residues, suggesting a common function. In the structure of Rpn2 from S. cerevisiae , this region is exposed and disordered, and is thus accessible for associating with Rpn13. The Rpn2 binding surface of human Rpn13 has been mapped by nuclear magnetic resonance titration to one surface of its Pru domain [1].
Domain
APF17781RPN1/RPN2 N-terminal domain (RPN1_RPN2_N)RPN1/RPN2 N-terminal domainThis domain is found at the N-terminus of the 26S proteasome regulatory subunits RPN1 and RPN2. The domain is formed by an array of alpha helices [2].Domain
APF01851Proteasome/cyclosome repeat (PC_rep)Proteasome/cyclosome repeat- Repeat
BPF08375Proteasome regulatory subunit C-terminal (Rpn3_C)Proteasome regulatory subunit C-terminal- Family
BPF01399PCI domain (PCI)PCI domainThis domain has also been called the PINT motif (Proteasome, Int-6, Nip-1 and TRIP-15) [1].Domain
CPF1809826S proteasome regulatory subunit RPN5 C-terminal domain (RPN5_C)26S proteasome regulatory subunit RPN5 C-terminal domainThis is the C-terminal domain of the 26S proteasome regulatory subunit RPN5 proteins.This helical domain can be found adjacent to Pfam:PF01399. The 26S proteasome is the major ATP-dependent protease in eukaryotes. Three subcomplexes form this degrada ...This is the C-terminal domain of the 26S proteasome regulatory subunit RPN5 proteins.This helical domain can be found adjacent to Pfam:PF01399. The 26S proteasome is the major ATP-dependent protease in eukaryotes. Three subcomplexes form this degradation machine: the lid, the base, and the core. The helices found at the C terminus of each lid subunit form a helical bundle that directs the ordered self-assembly of the lid subcomplex. This domain which comprises the tail of RPN5 along with the tail of Rpn9, are important for Rpn12 binding to the lid [1].
Domain
CPF01399PCI domain (PCI)PCI domainThis domain has also been called the PINT motif (Proteasome, Int-6, Nip-1 and TRIP-15) [1].Domain
DPF1805526S proteasome regulatory subunit RPN6 N-terminal domain (RPN6_N)26S proteasome regulatory subunit RPN6 N-terminal domainThis is the N-terminal domain found in RPN6 proteins (26S proteasome regulatory subunit). The 26S proteasome holocomplex consists of a 28-subunit barrel-shaped core particle (CP) in the center capped at the top and bottom by 19-subunit regulatory pa ...This is the N-terminal domain found in RPN6 proteins (26S proteasome regulatory subunit). The 26S proteasome holocomplex consists of a 28-subunit barrel-shaped core particle (CP) in the center capped at the top and bottom by 19-subunit regulatory particles (RPs). The CP forms the catalytic chamber and the RP is formed from two subcomplexes known as the lid and the base [1]. The lid comprises nine Rpn subunits in yeast (Rpn3/5/6/7/8/9/11/12/15) and the base comprises three Rpn subunits (Rpn1/2/13) and six ATPases (Rpt1-6) [2]. Phosphorylation of Rpn6 enhances proteasome ATPase activity and promotes the formation of doubly capped (30S) proteasome, hence accelerating the degradation of short-lived proteins [3].
Domain
DPF1850326S proteasome subunit RPN6 C-terminal helix domain (RPN6_C_helix)26S proteasome subunit RPN6 C-terminal helix domainThis is the C-terminal helix domain found in RPN6, a component of the 26S proteasome. The C-terminal helices are essential for lid assembly [1, 2].Domain
DPF01399PCI domain (PCI)PCI domainThis domain has also been called the PINT motif (Proteasome, Int-6, Nip-1 and TRIP-15) [1].Domain
EPF01399PCI domain (PCI)PCI domainThis domain has also been called the PINT motif (Proteasome, Int-6, Nip-1 and TRIP-15) [1].Domain
EPF1060226S proteasome subunit RPN7 (RPN7)26S proteasome subunit RPN7- Family
FPF13012Maintenance of mitochondrial structure and function (MitMem_reg)Maintenance of mitochondrial structure and function- Family
FPF01398JAB1/Mov34/MPN/PAD-1 ubiquitin protease (JAB)JAB1/Mov34/MPN/PAD-1 ubiquitin protease- Family
GPF01399PCI domain (PCI)PCI domainThis domain has also been called the PINT motif (Proteasome, Int-6, Nip-1 and TRIP-15) [1].Domain
HPF13519von Willebrand factor type A domain (VWA_2)von Willebrand factor type A domain- Domain
HPF02809Ubiquitin interaction motif (UIM)Ubiquitin interaction motif- Motif
IPF13012Maintenance of mitochondrial structure and function (MitMem_reg)Maintenance of mitochondrial structure and function- Family
IPF01398JAB1/Mov34/MPN/PAD-1 ubiquitin protease (JAB)JAB1/Mov34/MPN/PAD-1 ubiquitin protease- Family
JPF10075CSN8/PSMD8/EIF3K family (CSN8_PSD8_EIF3K)CSN8/PSMD8/EIF3K family- Family
KPF05160DSS1/SEM1 family (DSS1_SEM1)DSS1/SEM1 family- Family
LPF17781RPN1/RPN2 N-terminal domain (RPN1_RPN2_N)RPN1/RPN2 N-terminal domainThis domain is found at the N-terminus of the 26S proteasome regulatory subunits RPN1 and RPN2. The domain is formed by an array of alpha helices [2].Domain
LPF01851Proteasome/cyclosome repeat (PC_rep)Proteasome/cyclosome repeat- Repeat
LPF1805126S proteasome non-ATPase regulatory subunit RPN1 C-terminal (RPN1_C)26S proteasome non-ATPase regulatory subunit RPN1 C-terminalThis is the C-terminal domain found in RPN1 proteins (26S proteasome non-ATPase regulatory subunit 2). The 26S proteasome holocomplex consists of a 28-subunit barrel-shaped core particle (CP) in the center capped at the top and bottom by 19-subunit ...This is the C-terminal domain found in RPN1 proteins (26S proteasome non-ATPase regulatory subunit 2). The 26S proteasome holocomplex consists of a 28-subunit barrel-shaped core particle (CP) in the center capped at the top and bottom by 19-subunit regulatory particles (RPs). The CP forms the catalytic chamber and the RP is formed from two subcomplexes known as the lid and the base [1]. The lid comprises nine Rpn subunits in yeast (Rpn3/5/6/7/8/9/11/12/15) and the base comprises three Rpn subunits (Rpn1/2/13) and six ATPases (Rpt1-6) [2].
Domain
MPF17862AAA+ lid domain (AAA_lid_3)AAA+ lid domainThis entry represents the alpha helical AAA+ lid domain that is found to the C-terminus of AAA domains.Domain
MPF00004ATPase family associated with various cellular activities (AAA) (AAA)ATPase family associated with various cellular activities (AAA)AAA family proteins often perform chaperone-like functions that assist in the assembly, operation, or disassembly of protein complexes [2].Domain
NPF16450Proteasomal ATPase OB C-terminal domain (Prot_ATP_ID_OB)Proteasomal ATPase OB C-terminal domainThis is the interdomain (ID) or oligonucleotide binding (OB) domain of proteasomal ATPase [1-2]Domain
NPF17862AAA+ lid domain (AAA_lid_3)AAA+ lid domainThis entry represents the alpha helical AAA+ lid domain that is found to the C-terminus of AAA domains.Domain
NPF00004ATPase family associated with various cellular activities (AAA) (AAA)ATPase family associated with various cellular activities (AAA)AAA family proteins often perform chaperone-like functions that assist in the assembly, operation, or disassembly of protein complexes [2].Domain
OPF16450Proteasomal ATPase OB C-terminal domain (Prot_ATP_ID_OB)Proteasomal ATPase OB C-terminal domainThis is the interdomain (ID) or oligonucleotide binding (OB) domain of proteasomal ATPase [1-2]Domain
OPF17862AAA+ lid domain (AAA_lid_3)AAA+ lid domainThis entry represents the alpha helical AAA+ lid domain that is found to the C-terminus of AAA domains.Domain
OPF00004ATPase family associated with various cellular activities (AAA) (AAA)ATPase family associated with various cellular activities (AAA)AAA family proteins often perform chaperone-like functions that assist in the assembly, operation, or disassembly of protein complexes [2].Domain
PPF16450Proteasomal ATPase OB C-terminal domain (Prot_ATP_ID_OB)Proteasomal ATPase OB C-terminal domainThis is the interdomain (ID) or oligonucleotide binding (OB) domain of proteasomal ATPase [1-2]Domain
PPF17862AAA+ lid domain (AAA_lid_3)AAA+ lid domainThis entry represents the alpha helical AAA+ lid domain that is found to the C-terminus of AAA domains.Domain
PPF00004ATPase family associated with various cellular activities (AAA) (AAA)ATPase family associated with various cellular activities (AAA)AAA family proteins often perform chaperone-like functions that assist in the assembly, operation, or disassembly of protein complexes [2].Domain
QPF16450Proteasomal ATPase OB C-terminal domain (Prot_ATP_ID_OB)Proteasomal ATPase OB C-terminal domainThis is the interdomain (ID) or oligonucleotide binding (OB) domain of proteasomal ATPase [1-2]Domain
QPF17862AAA+ lid domain (AAA_lid_3)AAA+ lid domainThis entry represents the alpha helical AAA+ lid domain that is found to the C-terminus of AAA domains.Domain
QPF00004ATPase family associated with various cellular activities (AAA) (AAA)ATPase family associated with various cellular activities (AAA)AAA family proteins often perform chaperone-like functions that assist in the assembly, operation, or disassembly of protein complexes [2].Domain
RPF16450Proteasomal ATPase OB C-terminal domain (Prot_ATP_ID_OB)Proteasomal ATPase OB C-terminal domainThis is the interdomain (ID) or oligonucleotide binding (OB) domain of proteasomal ATPase [1-2]Domain
RPF17862AAA+ lid domain (AAA_lid_3)AAA+ lid domainThis entry represents the alpha helical AAA+ lid domain that is found to the C-terminus of AAA domains.Domain
RPF00004ATPase family associated with various cellular activities (AAA) (AAA)ATPase family associated with various cellular activities (AAA)AAA family proteins often perform chaperone-like functions that assist in the assembly, operation, or disassembly of protein complexes [2].Domain
S, TPF00240Ubiquitin family (ubiquitin)Ubiquitin familyThis family contains a number of ubiquitin-like proteins: SUMO (smt3 homologue) (see Swiss:Q02724), Nedd8 (see Swiss:P29595), Elongin B (see Swiss:Q15370), Rub1 (see Swiss:Q9SHE7), and Parkin (see Swiss:O60260). A number of them are thought to carry ...This family contains a number of ubiquitin-like proteins: SUMO (smt3 homologue) (see Swiss:Q02724), Nedd8 (see Swiss:P29595), Elongin B (see Swiss:Q15370), Rub1 (see Swiss:Q9SHE7), and Parkin (see Swiss:O60260). A number of them are thought to carry a distinctive five-residue motif termed the proteasome-interacting motif (PIM), which may have a biologically significant role in protein delivery to proteasomes and recruitment of proteasomes to transcription sites [5].
Domain
IA, UPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
IA, UPF10584Proteasome subunit A N-terminal signature (Proteasome_A_N)Proteasome subunit A N-terminal signature- Family
JA, VPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
JA, VPF10584Proteasome subunit A N-terminal signature (Proteasome_A_N)Proteasome subunit A N-terminal signature- Family
KA, WPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
KA, WPF10584Proteasome subunit A N-terminal signature (Proteasome_A_N)Proteasome subunit A N-terminal signature- Family
LA, XPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
LA, XPF10584Proteasome subunit A N-terminal signature (Proteasome_A_N)Proteasome subunit A N-terminal signature- Family
MA, YPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
MA, YPF10584Proteasome subunit A N-terminal signature (Proteasome_A_N)Proteasome subunit A N-terminal signature- Family
NA, ZPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
NA, ZPF10584Proteasome subunit A N-terminal signature (Proteasome_A_N)Proteasome subunit A N-terminal signature- Family
AA, OAPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
AA, OAPF10584Proteasome subunit A N-terminal signature (Proteasome_A_N)Proteasome subunit A N-terminal signature- Family
BA, PAPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
CA, QAPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
CA, QAPF12465Proteasome beta subunits C terminal (Pr_beta_C)Proteasome beta subunits C terminal- Family
DA, RAPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
EA, SAPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
FA, TAPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
GA, UAPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain
HA, VAPF00227Proteasome subunit (Proteasome)Proteasome subunitThe proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity ...The proteasome is a multisubunit structure that degrades proteins. Protein degradation is an essential component of regulation because proteins can become misfolded, damaged, or unnecessary. Proteasomes and their homologues vary greatly in complexity: from HslV (heat shock locus v), which is encoded by 1 gene in bacteria, to the eukaryotic 20S proteasome, which is encoded by more than 14 genes [1]. Recently evidence of two novel groups of bacterial proteasomes was proposed. The first is Anbu, which is sparsely distributed among cyanobacteria and proteobacteria [1]. The second is call beta-proteobacteria proteasome homologue (BPH) [1].
Domain

Gene Product Annotation Gene Product Annotation

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
U26S proteasome non-ATPase regulatory subunit 1
V26S proteasome non-ATPase regulatory subunit 3
W26S proteasome non-ATPase regulatory subunit 12
X26S proteasome non-ATPase regulatory subunit 11
Y26S proteasome non-ATPase regulatory subunit 6
Z26S proteasome non-ATPase regulatory subunit 7
a26S proteasome non-ATPase regulatory subunit 13
b26S proteasome non-ATPase regulatory subunit 4
c26S proteasome non-ATPase regulatory subunit 14
d26S proteasome non-ATPase regulatory subunit 8
e26S proteasome complex subunit SEM1
f26S proteasome non-ATPase regulatory subunit 2
A26S proteasome regulatory subunit 7
B26S proteasome regulatory subunit 4
C26S proteasome regulatory subunit 8
D26S proteasome regulatory subunit 6B
E26S proteasome regulatory subunit 10B
F26S proteasome regulatory subunit 6A
u, wUbiquitin
G, gProteasome subunit alpha type-6
H, hProteasome subunit alpha type-2
I, iProteasome subunit alpha type-4
J, jProteasome subunit alpha type-7
K, kProteasome subunit alpha type-5
L, lProteasome subunit alpha type-1
M, mProteasome subunit alpha type-3
N, nProteasome subunit beta type-6
O, oProteasome subunit beta type-7
P, pProteasome subunit beta type-3
Q, qProteasome subunit beta type-2
R, rProteasome subunit beta type-5
S, sProteasome subunit beta type-1
T, tProteasome subunit beta type-4