putative E3 ubiquitin-protein ligase UNKL isoform 4 [Homo sapiens]
Protein Classification
RING finger protein( domain architecture ID 106764)
RING finger protein may function as an E3 ubiquitin protein ligase that mediates the ubiquitination of target proteins by bringing the ubiquitin-charged E2 ubiquitin-conjugating enzyme and the acceptor protein together to enable the direct transfer of ubiquitin
List of domain hits
| Name | Accession | Description | Interval | E-value | ||
| RING_Ubox super family | cl17238 | RING finger (Really Interesting New Gene) domain and U-box domain superfamily; The RING finger ... |
139-182 | 2.48e-19 | ||
RING finger (Really Interesting New Gene) domain and U-box domain superfamily; The RING finger is a specialized type of Zn-finger of 40 to 60 residues that binds two atoms of zinc. It is defined by the "cross-brace" motif that chelates zinc atoms by eight amino acid residues, typically Cys or His, arranged in a characteristic spacing. Canonical RING motifs have been categorized into two major subclasses, RING-HC (C3HC4-type) and RING-H2 (C3H2C3-type), according to their Cys/His content. There are also many variants of RING fingers: some have different Cys/His patterns while some lack a single Cys or His residue at typical Zn ligand positions (the fourth or eighth zinc ligand is prevalently exchanged for an Asp, which can indeed chelate Zn in a RING finger as well). C4C4-, C3HC3D-, C2H2C4-, and C3HC5-type RING fingers are closely related to RING-HC fingers. In contrast, C4HC3- (RING-CH alias RINGv), C3H3C2-, C3H2C2D-, C3DHC3-, and C4HC2H-type RING fingers are more closely related to RING-H2 fingers. However, not all RING finger-containing proteins display regular RING finger features, and the RING finger family has turned out to be multifarious. The degenerate RING fingers of the Siz/PIAS RING (SP-RING) family proteins and sporulation protein RMD5, are characterized by lacking the second, fifth, and sixth Zn2+ ion-coordinating residues. They bind only one Zn2+ ion. On the other hand, the RING fingers of the human APC11 and RBX1 proteins can bind a third Zn atom since they harbor four additional Zn ligands. U-box is a modified form of the RING finger domain that lacks metal chelating Cys and His residues. It resembles the cross-brace RING structure consisting of three beta-sheets and a single alpha-helix, which would be stabilized by salt bridges instead of chelated metal ions. U-box proteins are widely distributed among eukaryotic organisms and show a higher prevalence in plants than in other organisms. RING finger/U-box-containing proteins are a group of diverse proteins with a variety of cellular functions, including oncogenesis, development, viral replication, signal transduction, the cell cycle and apoptosis. Many of them are ubiquitin-protein ligases (E3s) that serve as scaffolds for binding to ubiquitin-conjugating enzymes (E2s, also referred to as ubiquitin carrier proteins or UBCs) in close proximity to substrate proteins, which enable efficient transfer of ubiquitin from E2 to the substrates. The actual alignment was detected with superfamily member cd16772: Pssm-ID: 473075 Cd Length: 44 Bit Score: 76.75 E-value: 2.48e-19
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| COG4913 super family | cl25907 | Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown]; |
68-140 | 1.14e-03 | ||
Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown]; The actual alignment was detected with superfamily member COG4913: Pssm-ID: 443941 [Multi-domain] Cd Length: 1089 Bit Score: 38.74 E-value: 1.14e-03
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| Name | Accession | Description | Interval | E-value | ||
| RING-HC_UNKL | cd16772 | RING finger, HC subclass, found in RING finger protein unkempt-like (UNKL) and similar ... |
139-182 | 2.48e-19 | ||
RING finger, HC subclass, found in RING finger protein unkempt-like (UNKL) and similar proteins; UNKL, also known as zinc finger CCCH domain-containing protein 5-like, is a putative E3 ubiquitin-protein ligase that may participate in a protein complex showing an E3 ligase activity regulated by RAC1. It shows high sequence similarity with RING finger protein unkempt (UNK), which is a metazoan-specific zinc finger protein enriched in embryonic brains, and may play a broad regulatory role during the formation of the central nervous system (CNS). UNKL contains several CCCH-type zinc fingers at the N-terminus, and a C3HC4-type RING-HC finger at its C-terminus. Pssm-ID: 438428 Cd Length: 44 Bit Score: 76.75 E-value: 2.48e-19
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| zf-C3HC4_3 | pfam13920 | Zinc finger, C3HC4 type (RING finger); |
139-176 | 6.42e-05 | ||
Zinc finger, C3HC4 type (RING finger); Pssm-ID: 464042 [Multi-domain] Cd Length: 50 Bit Score: 38.90 E-value: 6.42e-05
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| COG4913 | COG4913 | Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown]; |
68-140 | 1.14e-03 | ||
Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown]; Pssm-ID: 443941 [Multi-domain] Cd Length: 1089 Bit Score: 38.74 E-value: 1.14e-03
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| Name | Accession | Description | Interval | E-value | ||
| RING-HC_UNKL | cd16772 | RING finger, HC subclass, found in RING finger protein unkempt-like (UNKL) and similar ... |
139-182 | 2.48e-19 | ||
RING finger, HC subclass, found in RING finger protein unkempt-like (UNKL) and similar proteins; UNKL, also known as zinc finger CCCH domain-containing protein 5-like, is a putative E3 ubiquitin-protein ligase that may participate in a protein complex showing an E3 ligase activity regulated by RAC1. It shows high sequence similarity with RING finger protein unkempt (UNK), which is a metazoan-specific zinc finger protein enriched in embryonic brains, and may play a broad regulatory role during the formation of the central nervous system (CNS). UNKL contains several CCCH-type zinc fingers at the N-terminus, and a C3HC4-type RING-HC finger at its C-terminus. Pssm-ID: 438428 Cd Length: 44 Bit Score: 76.75 E-value: 2.48e-19
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| RING-HC_UNK-like | cd16614 | RING finger, HC subclass, found in RING finger protein unkempt (UNK), unkempt-like (UNKL), and ... |
139-176 | 1.89e-14 | ||
RING finger, HC subclass, found in RING finger protein unkempt (UNK), unkempt-like (UNKL), and similar proteins; UNK, also known as zinc finger CCCH domain-containing protein 5, is a metazoan-specific zinc finger protein enriched in embryonic brains. It may play a broad regulatory role during the formation of the central nervous system (CNS). It is a sequence-specific RNA-binding protein required for early neuronal morphology. UNK is a neurogenic component of the mTOR pathway, and functions as a negative regulator of the timing of photoreceptor differentiation. It also specifically binds to Brg/Brm-associated factor BAF60b and promotes its ubiquitination in a Rac1-dependent manner. UNKL, also known as zinc finger CCCH domain-containing protein 5-like, is a putative E3 ubiquitin-protein ligase that may participate in a protein complex showing an E3 ligase activity regulated by RAC1. Both UNK and UNKL contain several tandem CCCH-type zinc fingers at the N-terminus, and a C3HC4-type RING-HC finger at its C-terminus. Pssm-ID: 438276 Cd Length: 38 Bit Score: 64.12 E-value: 1.89e-14
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| zf-C3HC4_3 | pfam13920 | Zinc finger, C3HC4 type (RING finger); |
139-176 | 6.42e-05 | ||
Zinc finger, C3HC4 type (RING finger); Pssm-ID: 464042 [Multi-domain] Cd Length: 50 Bit Score: 38.90 E-value: 6.42e-05
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| RING-HC_LRSAM1 | cd16515 | RING finger, HC subclass, found in leucine-rich repeat and sterile alpha motif-containing ... |
141-178 | 1.61e-04 | ||
RING finger, HC subclass, found in leucine-rich repeat and sterile alpha motif-containing protein 1 (LRSAM1) and similar proteins; LRSAM1, also known as Tsg101-associated ligase (TAL), or RIFLE, is an E3 ubiquitin-protein ligase that physically associates with, and selectively ubiquitylates, Tsg101, an E2-like molecule that regulates vesicular trafficking processes in yeast and mammals. It regulates a Tsg101-associated complex responsible for the sorting of cargo into cytoplasm-containing vesicles that bud at the multivesicular body and at the plasma membrane. LRSAM1 is a multidomain protein containing an N-terminal leucine-rich repeat (LRR), followed by several recognizable motifs, including an ezrin-radixin-moezin (ERM) domain, a coiled-coil (CC) region, a SAM domain, and a C-terminal C3HC4-type RING-HC finger domain. Pssm-ID: 438178 [Multi-domain] Cd Length: 48 Bit Score: 37.66 E-value: 1.61e-04
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| COG4913 | COG4913 | Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown]; |
68-140 | 1.14e-03 | ||
Uncharacterized conserved protein, contains a C-terminal ATPase domain [Function unknown]; Pssm-ID: 443941 [Multi-domain] Cd Length: 1089 Bit Score: 38.74 E-value: 1.14e-03
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| RING-HC_IAPs | cd16510 | RING finger, HC subclass, found in inhibitor of apoptosis proteins (IAPs); IAPs are frequently ... |
138-177 | 1.43e-03 | ||
RING finger, HC subclass, found in inhibitor of apoptosis proteins (IAPs); IAPs are frequently overexpressed in cancer and associated with tumor cell survival, chemoresistance, disease progression, and poor prognosis. They function primarily as negative regulators of cell death. They regulate caspases and apoptosis through the inhibition of specific members of the caspase family of cysteine proteases. In addition, IAPs has been implicated in a multitude of other cellular processes, including inflammatory signalling and immunity, mitogenic kinase signalling, proliferation and mitosis, as well as cell invasion and metastasis. IAPs in this family includes cellular inhibitor of apoptosis protein c-IAP1 (BIRC2) and c-IAP2 (BIRC3), XIAP (BIRC4), BIRC7, and BIRC8, all of which contain three N-terminal baculoviral IAP repeat (BIR) domains that enable interactions with proteins, a ubiquitin-association (UBA) domain that is responsible for the binding of polyubiquitin (polyUb), and a C3HC4-type RING-HC finger at the carboxyl terminus that is required for ubiquitin ligase activity. The UBA domain is only absent in mammalian homologs of BIRC7. Moreover, c-IAPs contains an additional caspase activation and recruitment domain (CARD) between the UBA and C3HC4-type RING-HC domains. The CARD domain may serve as a protein interaction surface. Pssm-ID: 438173 [Multi-domain] Cd Length: 40 Bit Score: 34.93 E-value: 1.43e-03
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| RING-HC_UNK | cd16771 | RING finger, HC subclass, found in RING finger protein unkempt (UNK) and similar proteins; UNK, ... |
141-175 | 2.85e-03 | ||
RING finger, HC subclass, found in RING finger protein unkempt (UNK) and similar proteins; UNK, also known as zinc finger CCCH domain-containing protein 5, is a metazoan-specific zinc finger protein enriched in embryonic brains. It may play a broad regulatory role during the formation of the central nervous system (CNS). It is a sequence-specific RNA-binding protein required for early neuronal morphology. UNK is a neurogenic component of the mTOR pathway, and functions as a negative regulator of the timing of photoreceptor differentiation. It also specifically binds to Brg/Brm-associated factor BAF60b and promotes its ubiquitination in a Rac1-dependent manner. UNK contains six tandem CCCH-type zinc fingers at the N-terminus, and a C3HC4-type RING-HC finger at its C-terminus. Pssm-ID: 438427 Cd Length: 42 Bit Score: 34.41 E-value: 2.85e-03
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| RING-HC_MEX3C | cd16722 | RING finger, HC subclass, found in RNA-binding protein MEX3C; MEX3C, also known as RING finger ... |
141-181 | 3.16e-03 | ||
RING finger, HC subclass, found in RNA-binding protein MEX3C; MEX3C, also known as RING finger and KH domain-containing protein 2 (RKHD2), or RING finger protein 194 (RNF194), is an RNA-binding phosphoprotein that acts as a suppressor of chromosomal instability. It functions as an ubiquitin E3 ligase responsible for the post-transcriptional, HLA-A allotype-specific regulation of MHC class I molecules (MHC-I). It also modifies retinoic acid inducible gene-1 (RIG-I) in stress granules and plays a critical role in eliciting antiviral immune responses. Moreover, MEX3C plays an essential role in normal postnatal growth via enhancing the local expression of insulin-like growth factor 1 (IGF1) in bone. It may also be involved in metabolic regulation of energy balance. MEX3C contains two K homology (KH) domains that provide RNA-binding capacity, and a C-terminal C3HC4-type RING-HC finger. Like other MEX-3 family proteins, MEX3C shuttles between the nucleus and the cytoplasm via the CRM1-dependent export pathway. Pssm-ID: 438382 [Multi-domain] Cd Length: 55 Bit Score: 34.57 E-value: 3.16e-03
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| RING-HC_MEX3A | cd16720 | RING finger, HC subclass, found in RNA-binding protein MEX3A; MEX3A, also known as RING finger ... |
138-175 | 3.67e-03 | ||
RING finger, HC subclass, found in RNA-binding protein MEX3A; MEX3A, also known as RING finger and KH domain-containing protein 4 (RKHD4), is an RNA-binding phosphoprotein that localizes in P-bodies and stress granules, which are two structures involved in the storage and turnover of mRNAs. It has been implicated in the regulation of tumorigenesis. It controls the polarity and stemness of intestinal epithelial cells through the post-transcriptional regulation of the homeobox transcription factor CDX2, which plays a crucial role in intestinal cell fate specification, both during normal development and in tumorigenic processes involving intestinal reprogramming. Moreover, it exhibits a transforming activity when overexpressed in gastric epithelial cells. MEX3A contains two K homology (KH) domains that provide RNA-binding capacity, and a C-terminal C3HC4-type RING-HC finger. Like other MEX-3 family proteins, MEX3A shuttles between the nucleus and the cytoplasm via the CRM1-dependent export pathway. Pssm-ID: 438380 [Multi-domain] Cd Length: 56 Bit Score: 34.55 E-value: 3.67e-03
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| mRING-HC-C3HC5_CGRF1-like | cd16649 | Modified RING finger, HC subclass (C3HC5-type), found in RING finger proteins, RNF26, RNF197 ... |
139-176 | 3.98e-03 | ||
Modified RING finger, HC subclass (C3HC5-type), found in RING finger proteins, RNF26, RNF197 (CGRRF1), RNF156 (MGRN1), RNF157 and similar proteins; This subfamily corresponds to a group of RING finger proteins containing a modified C3HC5-type RING-HC finger, which is distinguished from typical C3HC4 RING-HC finger due to the existence of the additional cysteine residue in the middle portion of the RING finger domain. Cell growth regulator with RING finger domain protein 1 (CGRRF1), also known as cell growth regulatory gene 19 protein (CGR19) or RING finger protein 197 (RNF197), functions as a novel biomarker to monitor endometrial sensitivity and response to insulin-sensitizing drugs, such as metformin, in the context of obesity. RNF26 is an E3 ubiquitin ligase that temporally regulates virus-triggered type I interferon induction by increasing the stability of Mediator of IRF3 activation, MITA, also known as STING, through K11-linked polyubiquitination after viral infection and promoting degradation of IRF3, another important component required for virus-triggered interferon induction. Mahogunin ring finger-1 (MGRN1), also known as RING finger protein 156 (RNF156), is a cytosolic E3 ubiquitin-protein ligase that inhibits signaling through the G protein-coupled melanocortin receptors-1 (MC1R), -2 (MC2R) and -4 (MC4R) via ubiquitylation-dependent and -independent processes. It suppresses chaperone-associated misfolded protein aggregation and toxicity. RNF157 is a cytoplasmic E3 ubiquitin ligase predominantly expressed in the brain. It is a homolog of the E3 ligase MGRN1. In cultured neurons, it promotes neuronal survival in an E3 ligase-dependent manner. In contrast, it supports growth and maintenance of dendrites independent of its E3 ligase activity. RNF157 interacts with and ubiquitinates the adaptor protein APBB1 (amyloid beta precursor protein-binding, family B, member 1 or Fe65), which regulates neuronal survival, but not dendritic growth downstream of RNF157. The nuclear localization of APBB1 together with its interaction partner RNA-binding protein SART3 (squamous cell carcinoma antigen recognized by T cells 3 or Tip110) is crucial to trigger apoptosis. Pssm-ID: 438311 [Multi-domain] Cd Length: 40 Bit Score: 33.83 E-value: 3.98e-03
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| RING-HC_MEX3 | cd16518 | RING finger, HC subclass, found in RNA-binding proteins of the evolutionarily-conserved MEX-3 ... |
139-181 | 5.82e-03 | ||
RING finger, HC subclass, found in RNA-binding proteins of the evolutionarily-conserved MEX-3 family; MEX-3 phosphoproteins are found in vertebrates. They are mediators of post-transcriptional regulation in different organisms, and have been implicated in many core biological processes, including embryonic development, epithelial homeostasis, immune responses, metabolism, and cancer. They contain two K homology (KH) domains that provide RNA-binding capacity, and a C-terminal C3HC4-type RING-HC finger. They shuttle between the nucleus and the cytoplasm via the CRM1-dependent export pathway. The RNA-binding protein MEX-3 from nematode Caenorhabditis elegans is the founding member of the MEX-3 family. Due to the lack of a RING-HC finger, it is not included here. Pssm-ID: 438181 [Multi-domain] Cd Length: 53 Bit Score: 33.88 E-value: 5.82e-03
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| RING-HC_MEX3D | cd16723 | RING finger, HC subclass, found in RNA-binding protein MEX3D; MEX3D, also known as RING finger ... |
138-181 | 6.69e-03 | ||
RING finger, HC subclass, found in RNA-binding protein MEX3D; MEX3D, also known as RING finger and KH domain-containing protein 1 (RKHD1), RING finger protein 193 (RNF193), or TINO, is an RNA-binding phosphoprotein that controls the stability of the transcripts coding for the anti-apoptotic protein BCL-2, and negatively regulates BCL-2 in HeLa cells. MEX3D contains two K homology (KH) domains that provide RNA-binding capacity, and a C-terminal C3HC4-type RING-HC finger. Like other MEX-3 family proteins, MEX3D shuttles between the nucleus and the cytoplasm via the CRM1-dependent export pathway. Pssm-ID: 438383 [Multi-domain] Cd Length: 64 Bit Score: 33.74 E-value: 6.69e-03
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| RING-HC_MEX3B | cd16721 | RING finger, HC subclass, found in RNA-binding protein MEX3B; MEX3B, also known as RING finger ... |
138-175 | 6.82e-03 | ||
RING finger, HC subclass, found in RNA-binding protein MEX3B; MEX3B, also known as RING finger and KH domain-containing protein 3 (RKHD3), or RING finger protein 195 (RNF195), is an RNA-binding phosphoprotein that localizes in P-bodies and stress granules, which are two structures involved in the storage and turnover of mRNAs. It regulates the spatial organization of the Rap1 pathway that orchestrates Sertoli cell functions. It has a 3' long conserved untranslated region (3'LCU)-mediated fine-tuning system for mRNA regulation in early vertebrate development such as anteroposterior (AP) patterning and signal transduction. MEX3B contains two K homology (KH) domains that provide RNA-binding capacity, and a C-terminal C3HC4-type RING-HC finger. Like other MEX-3 family proteins, MEX3B shuttles between the nucleus and the cytoplasm via the CRM1-dependent export pathway. Pssm-ID: 438381 [Multi-domain] Cd Length: 58 Bit Score: 33.88 E-value: 6.82e-03
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| RING-HC_RSPRY1 | cd16566 | RING finger, HC subclass, found in RING finger and SPRY domain-containing protein 1 (RSPRY1) ... |
137-176 | 7.16e-03 | ||
RING finger, HC subclass, found in RING finger and SPRY domain-containing protein 1 (RSPRY1) and similar proteins; RSPRY1 is a hypothetical RING and SPRY domain-containing protein of unknown physiological function. Mutations in its corresponding gene RSPRY1 may associate with a distinct skeletal dysplasia syndrome. RSPRY1 contains a B30.2/SPRY domain and a C3HC4-type RING-HC finger. Pssm-ID: 438228 [Multi-domain] Cd Length: 43 Bit Score: 33.10 E-value: 7.16e-03
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| mRING-HC-C3HC5_CGRF1 | cd16787 | Modified RING finger, HC subclass (C3HC5-type), found in cell growth regulator with RING ... |
139-176 | 9.82e-03 | ||
Modified RING finger, HC subclass (C3HC5-type), found in cell growth regulator with RING finger domain protein 1 (CGRRF1) and similar proteins; CGRRF1, also known as cell growth regulatory gene 19 protein (CGR19) or RING finger protein 197 (RNF197), functions as a novel biomarker to monitor endometrial sensitivity and response to insulin-sensitizing drugs, such as metformin, in the context of obesity. CGRRF1 contains a C-terminal modified C3HC5-type RING-HC finger, which is distinguished from typical C3HC4 RING-HC finger due to the existence of the additional cysteine residue in the middle portion of the RING finger domain. Pssm-ID: 438441 [Multi-domain] Cd Length: 38 Bit Score: 32.72 E-value: 9.82e-03
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