| IED ID | IndEnz0002000986 |
| Enzyme Type ID | protease000986 |
| Protein Name |
Proteasome subunit beta type-8 EC 3.4.25.1 Proteasome subunit beta-5i |
| Gene Name | PSMB8 |
| Organism | Bos taurus (Bovine) |
| Taxonomic Lineage | cellular organisms Eukaryota Opisthokonta Metazoa Eumetazoa Bilateria Deuterostomia Chordata Craniata Vertebrata Gnathostomata (jawed vertebrates) Teleostomi Euteleostomi Sarcopterygii Dipnotetrapodomorpha Tetrapoda Amniota Mammalia Theria Eutheria Boreoeutheria Laurasiatheria Artiodactyla Ruminantia Pecora Bovidae Bovinae Bos (oxen cattle) Bos taurus (Bovine) |
| Enzyme Sequence | MALLDVCGAPGGQRGDWAVPLAGSRQRSDPGHYGFSLRSPELALPRGMQPTEFFRSLGGNGESKVQIEMAHGTTTLAFKFQHGVIVAVDSRASAGNYIATLKVNKVIEINPYLLGTMSGCAADCLYWERLLAKECRLYYLRNGERISVSAASKLLSNMMCQYRGMGLSMGSMICGWDKKGPGLYYVDENGTRLSGNMFSTGSGNSHAYGVMDSGYRPDLSIEEAYDLGRRAIVHATHRDSYSGGVVNMYHMKEDGWVKVESTDVSDLMHQYREASQ |
| Enzyme Length | 276 |
| Uniprot Accession Number | Q3T112 |
| Absorption | |
| Active Site | ACT_SITE 73; /note=Nucleophile; /evidence=ECO:0000250 |
| Activity Regulation | |
| Binding Site | |
| Calcium Binding | |
| catalytic Activity | CATALYTIC ACTIVITY: Reaction=Cleavage of peptide bonds with very broad specificity.; EC=3.4.25.1; |
| DNA Binding | |
| EC Number | 3.4.25.1 |
| Enzyme Function | FUNCTION: The proteasome is a multicatalytic proteinase complex which is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. The proteasome has an ATP-dependent proteolytic activity. This subunit is involved in antigen processing to generate class I binding peptides (By similarity). May participate in the generation of spliced peptides resulting from the ligation of two separate proteasomal cleavage products that are not contiguous in the parental protein (By similarity). Required for adipocyte differentiation (By similarity). {ECO:0000250, ECO:0000250|UniProtKB:P28062}. |
| Temperature Dependency | |
| PH Dependency | |
| Pathway | |
| nucleotide Binding | |
| Features | Active site (1); Beta strand (12); Chain (1); Helix (5); Propeptide (1); Sequence conflict (5); Site (1); Turn (2) |
| Keywords | 3D-structure;Cytoplasm;Differentiation;Hydrolase;Immunity;Nucleus;Protease;Proteasome;Reference proteome;Threonine protease;Zymogen |
| Interact With | |
| Induction | INDUCTION: Up-regulated by interferon gamma (at protein level). |
| Subcellular Location | SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|PROSITE-ProRule:PRU00809}. Nucleus {ECO:0000250}. |
| Modified Residue | |
| Post Translational Modification | PTM: Autocleaved. The resulting N-terminal Thr residue of the mature subunit is responsible for the nucleophile proteolytic activity. {ECO:0000250|UniProtKB:O35955}. |
| Signal Peptide | |
| Structure 3D | Electron microscopy (3) |
| Cross Reference PDB | 7DR6; 7DR7; 7DRW; |
| Mapped Pubmed ID | 23706739; 33531497; |
| Motif | |
| Gene Encoded By | |
| Mass | 30,268 |
| Kinetics | |
| Metal Binding | |
| Rhea ID | |
| Cross Reference Brenda |