Protein: E3 ubiquitin-protein ligase RNF123 (Q5XPI4)
Organism: Homo sapiens (Human)
Function: Catalytic subunit of the KPC complex that acts as E3 ubiquitin-protein ligase. Promotes the ubiquitination and proteasome-mediated degradation of CDKN1B which is the cyclin-dependent kinase inhibitor at the G0-G1 transition of the cell cycle. Also acts as a key regulator of the NF-kappa-B signaling by promoting maturation of the NFKB1 component of NF-kappa-B: acts by catalyzing ubiquitination of the NFKB1 p105 precursor, leading to limited proteasomal degradation of NFKB1 p105 and generation of the active NFKB1 p50 subunit. Functions also as an inhibitor of innate antiviral signaling mediated by RIGI and IFIH1 independently of its E3 ligase activity. Interacts with the N-terminal CARD domains of RIGI and IFIH1 and competes with the downstream adapter MAVS
Subcellular location: Cytoplasm
InterPro domains:
- IPR043136: B30.2/SPRY domain superfamily (homologous_superfamily) [103-280]
- IPR057987: E3 ubiquitin-protein ligase RNF123/RKP, TPR repeat (domain) [1028-1223]
- IPR013320: Concanavalin A-like lectin/glucanase domain superfamily (homologous_superfamily) [68-266]
- IPR001841: Zinc finger, RING-type (domain) [1254-1292]
- IPR045129: E3 ubiquitin-protein ligase RNF123/RKP/RSPRY1 (family) [35-1305]
- IPR013083: Zinc finger, RING/FYVE/PHD-type (homologous_superfamily) [1245-1304]
- IPR035773: Ring finger protein 123, SPRY domain (domain) [123-250]
- IPR003877: SPRY domain (domain) [132-253]
- IPR001870: B30.2/SPRY domain (domain) [74-254]
Sequence:
MASKGAGMSFSRKSYRLTSDAEKSRVTGIVQEKLLNDYLNRIFSSSEHAPPAATSRKPLNFQNLPEHLDQLLQVDNEEEESQGQVEGRLGPSTVVLDHTGGFEGLLLVDDDLLGVIGHSNFGTIRSTTCVYKGKWLYEVLISSQGLMQIGWCTISCRFNQEEGVGDTHNSYAYDGNRVRKWNVTTTNYGKAWAAGDIVSCLIDLDDGTLSFCLNGVSLGTAFENLSRGLGMAYFPAISLSFKESVAFNFGSRPLRYPVAGYRPLQDPPSADLVRAQRLLGCFRAVLSVELDPVEGRLLDKESSKWRLRGQPTVLLTLAHIFHHFAPLLRKVYLVEAVLMSFLLGIVEKGTPTQAQSVVHQVLDLLWLFMEDYEVQDCLKQLMMSLLRLYRFSPIVPDLGLQIHYLRLTIAILRHEKSRKFLLSNVLFDVLRSVVFFYIKSPLRVEEAGLQELIPTTWWPHCSSREGKESTEMKEETAEERLRRRAYERGCQRLRKRIEVVEELQVQILKLLLDNKDDNGGEASRYIFLTKFRKFLQENASGRGNMPMLCPPEYMVCFLHRLISALRYYWDEYKASNPHASFSEEAYIPPQVFYNGKVDYFDLQRLGGLLSHLRKTLKDDLASKANIVIDPLELQSTAMDDLDEDEEPAPAMAQRPMQALAVGGPLPLPRPGWLSSPTLGRANRFLSTAAVSLMTPRRPLSTSEKVKVRTLSVEQRTREDIEGSHWNEGLLLGRPPEEPEQPLTENSLLEVLDGAVMMYNLSVHQQLGKMVGVSDDVNEYAMALRDTEDKLRRCPKRRKDILAELTKSQKVFSEKLDHLSRRLAWVHATVYSQEKMLDIYWLLRVCLRTIEHGDRTGSLFAFMPEFYLSVAINSYSALKNYFGPVHSMEELPGYEETLTRLAAILAKHFADARIVGTDIRDSLMQALASYVCYPHSLRAVERIPEEQRIAMVRNLLAPYEQRPWAQTNWILVRLWRGCGFGYRYTRLPHLLKTKLEDANLPSLQKPCPSTLLQQHMADLLQQGPDVAPSFLNSVLNQLNWAFSEFIGMIQEIQQAAERLERNFVDSRQLKVCATCFDLSVSLLRVLEMTITLVPEIFLDWTRPTSEMLLRRLAQLLNQVLNRVTAERNLFDRVVTLRLPGLESVDHYPILVAVTGILVQLLVRGPASEREQATSVLLADPCFQLRSICYLLGQPEPPAPGTALPAPDRKRFSLQSYADYISADELAQVEQMLAHLTSASAQAAAASLPTSEEDLCPICYAHPISAVFQPCGHKSCKACINQHLMNNKDCFFCKTTIVSVEDWEKGANTSTTSSAA
Predicted GO terms:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0003824 (catalytic activity), GO:0016740 (transferase activity), GO:0140096 (catalytic activity, acting on a protein), GO:0005515 (protein binding), GO:0019787 (ubiquitin-like protein transferase activity), GO:0004842 (ubiquitin-protein transferase activity), GO:0061659 (ubiquitin-like protein ligase activity), GO:0061630 (ubiquitin protein ligase activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0050896 (response to stimulus), GO:0044419 (biological process involved in interspecies interaction between organisms), GO:0009605 (response to external stimulus), GO:0006950 (response to stress), GO:0071704 (organic substance metabolic process), GO:0051707 (response to other organism), GO:0009607 (response to biotic stimulus), GO:0006807 (nitrogen compound metabolic process), GO:0044238 (primary metabolic process), GO:0006952 (defense response), GO:1901564 (organonitrogen compound metabolic process), GO:0019538 (protein metabolic process), GO:0043207 (response to external biotic stimulus), GO:0009615 (response to virus), GO:0043170 (macromolecule metabolic process), GO:0098542 (defense response to other organism), GO:0036211 (protein modification process), GO:0043412 (macromolecule modification), GO:0140546 (defense response to symbiont), GO:0051607 (defense response to virus), GO:0070647 (protein modification by small protein conjugation or removal), GO:0032446 (protein modification by small protein conjugation), GO:0016567 (protein ubiquitination)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0031975 (envelope), GO:0016020 (membrane), GO:0005829 (cytosol), GO:0005737 (cytoplasm), GO:0012505 (endomembrane system), GO:0031090 (organelle membrane), GO:0031967 (organelle envelope), GO:0005635 (nuclear envelope), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0031965 (nuclear membrane), GO:0043231 (intracellular membrane-bounded organelle), GO:0005634 (nucleus)