Protein: Kelch domain-containing protein 1 (Q8N7A1)
Organism: Homo sapiens (Human)
Function: Substrate-recognition component of a Cul5-RING (CRL5) E3 ubiquitin-protein ligase complex of the DesCEND (destruction via C-end degrons) pathway, which recognizes a C-degron located at the extreme C terminus of target proteins, leading to their ubiquitination and degradation. The C-degron recognized by the DesCEND pathway is usually a motif of less than ten residues and can be present in full-length proteins, truncated proteins or proteolytically cleaved forms. The CRL5(KLHDC1) complex mediates ubiquitination and degradation of truncated SELENOS selenoprotein produced by failed UGA/Sec decoding, which ends with a glycine.
Subcellular location: Cytoplasm, cytosol {ECO:0000269|PubMed:16964437, ECO:0000269|PubMed:32200094}.
Sequence: MADSQLFCVAEERSGHCAVVDGNFLYVWGGYVSIEDNEVYLPNDEIWTYDIDSGLWRMHLMEGELPASMSGSCGACINGKLYIFGGYDDKGYSNRLYFVNLRTRDETYIWEKITDFEGQPPTPRDKLSCWVYKDRLIYFGGYGCRRHSELQDCFDVHDASWEEQIFWGWHNDVHIFDTKTQTWFQPEIKGGVPPQPRAAHTCAVLGNKGYIFGGRVLQTRMNDLHYLNLDTWTWSGRITINGESPKHRSWHTLTPIADDKLFLCGGLSADNIPLSDGWIHNVTTNCWKQLTHLPKTRPRLWHTACLGKENEIMVFGGSKDDLLALDTGHCNDLLIFQTQPYSLLRSCLDCIGKNSIMLESQISLLPPKLLQQVLKKITFWAAANHREEQRVQKEETENKYQWISSN
InterPro domains: - IPR015915: Kelch-type beta-propeller (homologous_superfamily) [4-362]
Interaction partners: - Cullin-5
- Elongin-B
- E3 ubiquitin-protein ligase RBX1
- RING-box protein 2
- Elongin-C
- Ankyrin repeat and SOCS box protein 4
- Ankyrin repeat domain-containing protein 9
- Cyclic AMP-responsive element-binding protein 3
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0060090 (molecular adaptor activity), GO:0030674 (protein-macromolecule adaptor activity), GO:0003682 (chromatin binding), GO:0005515 (protein binding), GO:0140767 (enzyme-substrate adaptor activity), GO:1990756 (ubiquitin ligase-substrate adaptor activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0044237 (cellular metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0071704 (organic substance metabolic process), GO:0009056 (catabolic process), GO:0044238 (primary metabolic process), GO:1901564 (organonitrogen compound metabolic process), GO:0044248 (cellular catabolic process), GO:0019538 (protein metabolic process), GO:1901575 (organic substance catabolic process), GO:0044260 (cellular macromolecule metabolic process), GO:0043170 (macromolecule metabolic process), GO:0009057 (macromolecule catabolic process), GO:1901565 (organonitrogen compound catabolic process), GO:0006508 (proteolysis), GO:0044265 (cellular macromolecule catabolic process), GO:0030163 (protein catabolic process), GO:0043632 (modification-dependent macromolecule catabolic process), GO:0010498 (proteasomal protein catabolic process), GO:0051603 (proteolysis involved in protein catabolic process), GO:0019941 (modification-dependent protein catabolic process), GO:0043161 (proteasome-mediated ubiquitin-dependent protein catabolic process), GO:0006511 (ubiquitin-dependent protein catabolic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0032991 (protein-containing complex), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0000785 (chromatin), GO:0005829 (cytosol), GO:1902494 (catalytic complex), GO:0005737 (cytoplasm), GO:0031974 (membrane-enclosed lumen), GO:0005654 (nucleoplasm), GO:0140535 (intracellular protein-containing complex), GO:0043233 (organelle lumen), GO:1990234 (transferase complex), GO:0000151 (ubiquitin ligase complex), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0043228 (non-membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0031461 (cullin-RING ubiquitin ligase complex), GO:0070013 (intracellular organelle lumen), GO:0043232 (intracellular non-membrane-bounded organelle), GO:0031981 (nuclear lumen), GO:0005694 (chromosome), GO:0031462 (Cul2-RING ubiquitin ligase complex), GO:0005634 (nucleus)