Protein: CDK5 regulatory subunit-associated protein 3 (CDK5 activator-binding protein C53) (Q9JLH7)
Organism: Rattus norvegicus (Rat)
Function: Substrate adapter for ufmylation, the covalent attachment of the ubiquitin-like modifier UFM1 to substrate proteins, in response to endoplasmic reticulum stress (By similarity). Negatively regulates NF-kappa-B-mediated gene transcription through the control of RELA phosphorylation. Probable tumor suppressor initially identified as a CDK5R1 interactor controlling cell proliferation. Also regulates mitotic G2/M transition checkpoint and mitotic G2 DNA damage checkpoint. Through its interaction with CDKN2A/ARF and MDM2 may induce MDM2-dependent p53/TP53 ubiquitination, stabilization and activation in the nucleus, thereby promoting G1 cell cycle arrest and inhibition of cell proliferation. May also play a role in the rupture of the nuclear envelope during apoptosis. May regulate MAPK14 activity by regulating its dephosphorylation by PPM1D/WIP1 (By similarity). Required for liver development (By similarity).
Subcellular location: Endoplasmic reticulum membrane {ECO:0000250|UniProtKB:Q96JB5}. Cytoplasm {ECO:0000250|UniProtKB:Q96JB5}. Nucleus {ECO:0000250|UniProtKB:Q96JB5}. Cytoplasm, cytoskeleton, microtubule organizing center, centrosome {ECO:0000250|UniProtKB:Q96JB5}. Cytoplasm, cytoskeleton {ECO:0000250|UniProtKB:Q96JB5}. Note=Tethered to the endoplasmic reticulum membrane as part of the UFM1 ribosome E3 ligase (UREL) complex. Colocalizes and associates with microtubules. {ECO:0000250|UniProtKB:Q96JB5}.
Sequence: MQDHQHVPIDIQTSKLLDWLVDRRHCNLKWQSLVLTIREKINTAIQDMPESQEIAQLLSGSYIHYFHCLRIVDLLKGTEASTKNIFGRYSSQRMKDWQEIISLYEKDNTYLVELSSLLVRNVNYEIPSLKKQIAKCQQLQQDYSRKEEEGQAGAAEMREQFYHSCKQYGITGDNVRRELLALVKDLPSQLAEIGAGAQSLGEAIDLYQACVEFVCDSPTEQVLPMLRYVQPKGNSTVYEWRTGTEPSVVERPQLEDPPEQVQEDEIDWGDFGLEAVSDSGNIISAETPGIDWGISLESESKDAGADKIDWGDNAVASEITVLETGTEAPEGVARGSDALTLLEYPETRNQFIDELMELEIFLSQRAVEMSEEADILSVSQFQLAPAILQGQTKEKMLSLVSTLQHLIGQLTSLDLQHLFMILASPRYVDRVTELLQQKLKQSQLLALKKDLMVEKQQEALQEQAALEPKLDLLLEKTRELQKLIEADISKRYNGRPVNLMGTSV
InterPro domains: - IPR008491: CDK5 regulatory subunit-associated protein 3 (family) [1-502]
Interaction partners: - E3 UFM1-protein ligase 1
- DDRGK domain-containing protein 1
- Ufm1-specific protease 2
- Ubiquitin-fold modifier-conjugating enzyme 1
- Ubiquitin-like modifier-activating enzyme 5
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005515 (protein binding), GO:0019899 (enzyme binding), GO:0044389 (ubiquitin-like protein ligase binding)
Biological Process (BP): GO:0008150 (biological process), GO:0065007 (biological regulation), GO:0048518 (positive regulation of biological process), GO:0050789 (regulation of biological process), GO:0048522 (positive regulation of cellular process), GO:0019222 (regulation of metabolic process), GO:0050794 (regulation of cellular process), GO:0009893 (positive regulation of metabolic process), GO:0010604 (positive regulation of macromolecule metabolic process), GO:0031325 (positive regulation of cellular metabolic process), GO:0009889 (regulation of biosynthetic process), GO:0051171 (regulation of nitrogen compound metabolic process), GO:0060255 (regulation of macromolecule metabolic process), GO:0031323 (regulation of cellular metabolic process), GO:0080090 (regulation of primary metabolic process), GO:0009891 (positive regulation of biosynthetic process), GO:0051173 (positive regulation of nitrogen compound metabolic process), GO:0010557 (positive regulation of macromolecule biosynthetic process), GO:0045935 (positive regulation of nucleobase-containing compound metabolic process), GO:0051254 (positive regulation of RNA metabolic process), GO:0010556 (regulation of macromolecule biosynthetic process), GO:0031326 (regulation of cellular biosynthetic process), GO:0019219 (regulation of nucleobase-containing compound metabolic process), GO:0051252 (regulation of RNA metabolic process), GO:0031328 (positive regulation of cellular biosynthetic process), GO:0010468 (regulation of gene expression), GO:1902680 (positive regulation of RNA biosynthetic process), GO:2001141 (regulation of RNA biosynthetic process), GO:0006355 (regulation of DNA-templated transcription), GO:0006357 (regulation of transcription by RNA polymerase II), GO:0045893 (positive regulation of DNA-templated transcription), GO:1903508 (positive regulation of nucleic acid-templated transcription), GO:1903506 (regulation of nucleic acid-templated transcription), GO:0045944 (positive regulation of transcription by RNA polymerase II)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005737 (cytoplasm), GO:0005622 (intracellular anatomical structure)