RING finger, HC subclass, found in RING finger protein 186 (RNF186) and similar proteins; RNF186 is an E3 ubiquitin-protein ligase with an N-terminal C3HC4-type RING-HC finger and two putative C-terminal transmembrane domains which enable it to localize in a certain organelle. It regulates RING-dependent self-ubiquitination, as well as endoplasmic reticulum (ER) stress-mediated apoptosis through interaction with the Bcl-2 family protein BNip1.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|..
gi 21410641  37 DLECLVCREPYSC-PRLPKLLACQHAFCAICLKLLLCVQDNTWSITCPLCRK 87
Cdd:cd16557   1 DLECLVCRNPYSCfVRKPKLLACQHAFCAICLKLILCEQDGTWSVTCPLCRR 52

RING finger, HC subclass, found in RING finger protein 186 (RNF186) and similar proteins; RNF186 is an E3 ubiquitin-protein ligase with an N-terminal C3HC4-type RING-HC finger and two putative C-terminal transmembrane domains which enable it to localize in a certain organelle. It regulates RING-dependent self-ubiquitination, as well as endoplasmic reticulum (ER) stress-mediated apoptosis through interaction with the Bcl-2 family protein BNip1.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|..
gi 21410641  37 DLECLVCREPYSC-PRLPKLLACQHAFCAICLKLLLCVQDNTWSITCPLCRK 87
Cdd:cd16557   1 DLECLVCRNPYSCfVRKPKLLACQHAFCAICLKLILCEQDGTWSVTCPLCRR 52

RING-finger-containing E3 ubiquitin ligase [Signal transduction mechanisms];

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21410641  38 LECLVCREPYscpRLPKLLACQHAFCAICLKLLLCVQDNtwsitCPLCR---KVTAVPGGLIC------------SLRDH 102
Cdd:COG5432  26 LRCRICDCRI---SIPCETTCGHTFCSLCIRRHLGTQPF-----CPVCRedpCESRLRGSSGSreinesharnrdLLRKV 97

                        90       100       110       120
                ....*....|....*....|....*....|....*....|....*.
gi 21410641 103 EAVVGQLAQPCTEVSLCPQGLVDPADLAAGHpslvGEDGQDEVSAN 148
Cdd:COG5432  98 LESLCRLPRPIKEERPCRWETVIAQDSASGD----EEWEDDLASNS 139

RING-finger-containing E3 ubiquitin ligase [Posttranslational modification, protein turnover, chaperones];

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|..
gi 21410641  35 ECDLECLVCREPYSCPrlpKLLACQHAFCAICLKLLLCVQDntwSITCPLCR 86
Cdd:COG5574 213 LADYKCFLCLEEPEVP---SCTPCGHLFCLSCLLISWTKKK---YEFCPLCR 258

RING finger, HC subclass, found in RING finger protein 186 (RNF186) and similar proteins; RNF186 is an E3 ubiquitin-protein ligase with an N-terminal C3HC4-type RING-HC finger and two putative C-terminal transmembrane domains which enable it to localize in a certain organelle. It regulates RING-dependent self-ubiquitination, as well as endoplasmic reticulum (ER) stress-mediated apoptosis through interaction with the Bcl-2 family protein BNip1.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|..
gi 21410641  37 DLECLVCREPYSC-PRLPKLLACQHAFCAICLKLLLCVQDNTWSITCPLCRK 87
Cdd:cd16557   1 DLECLVCRNPYSCfVRKPKLLACQHAFCAICLKLILCEQDGTWSVTCPLCRR 52

RING finger, HC subclass, found in RING finger protein RNF183, RNF223, RNF225 and similar proteins; RNF183 is an E3 ubiquitin-protein ligase that is upregulated during intestinal inflammation and is negatively regulated by miR-7. It promotes intestinal inflammation by increasing the ubiquitination and degradation of inhibitor of kappa B, thereby resulting in secondary activation of the Nuclear factor-kappaB (NF-kB) pathway. The interaction between RNF183-mediated ubiquitination and miRNA may be an important novel epigenetic mechanism in the pathogenesis of inflammatory bowel disease (IBD). The biological function of RNF223 and RNF225 remains unclear. Members of this family contain an N-terminal C3HC4-type RING-HC finger.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*..
gi 21410641  38 LECLVCREPYSCP-RLPKLLACQHAFCAICL-KLLLCVQDNTWSITCPLCRKVTAVP 92
Cdd:cd16556   1 LECSICFSSYDNTfKTPKLLDCGHTFCLECLaRLSLASPPQAERVPCPLCRQPTVLP 57

RING finger, HC subclass, found in tripartite motif-containing protein 32 (TRIM32) and similar proteins; TRIM32, also known as 72 kDa Tat-interacting protein, zinc finger protein HT2A, or BBS11, is an E3 ubiquitin-protein ligase that promotes degradation of several targets, including actin, PIASgamma, Abl interactor 2, dysbindin, X-linked inhibitor of apoptosis (XIAP), p73 transcription factor, thin filaments and Z-bands during fasting. It plays important roles in neuronal differentiation of neural progenitor cells, as well as in controlling cell fate in skeletal muscle progenitor cells. It reduces PI3K-Akt-FoxO signaling in muscle atrophy by promoting plakoglobin-PI3K dissociation. It also functions as a pluripotency-reprogramming roadblock that facilitates cellular transition towards differentiation by modulating the levels of Oct4 and cMyc. Moreover, TRIM32 is an intrinsic influenza A virus (IAV) restriction factor which senses and targets the polymerase basic protein 1 (PB1) for ubiquitination and protein degradation. It also plays a significant role in mediating the biological activity of the HIV-1 Tat protein in vivo, binds specifically to the activation domain of HIV-1 Tat, and can also interact with the HIV-2 and EIAV Tat proteins in vivo. Furthermore, TRIM32 regulates myoblast proliferation by controlling turnover of NDRG2 (N-myc downstream-regulated gene). It negatively regulates tumor suppressor p53 to promote tumorigenesis. It also facilitates degradation of MYCN on spindle poles and induces asymmetric cell division in human neuroblastoma cells. In addition, TRIM32 plays important roles in regulation of hyperactivities and positively regulates the development of anxiety and depression disorders induced by chronic stress. It also plays a role in regeneration by affecting satellite cell cycle progression via modulation of the SUMO ligase PIASy (PIAS4). Defects in TRIM32 leads to limb-girdle muscular dystrophy type 2H (LGMD2H), sarcotubular myopathies (STM) and Bardet-Biedl syndrome. TRIM32 belongs to the C-VII subclass of the TRIM (tripartite motif)-NHL family that is defined by their N-terminal RBCC (RING, Bbox, and coiled coil) domains, including three consecutive zinc-binding domains, a C3HC4-type RING-HC finger, Bbox1 and Bbox2, and a coiled coil domain, as well as a NHL (named after proteins NCL-1, HT2A and Lin-41 that contain repeats folded into a six-bladed beta propeller) repeat domain positioned C-terminal to the RBCC domain. The NHL domain mediates the interaction with Argonaute proteins and consequently allows TRIM32 to modulate the activity of certain miRNAs.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|..
gi 21410641  38 LECLVCREPYSC-PRLPKLLACQHAFCAICLKLLLcVQDNTWSITCPLCRKV 88
Cdd:cd16587   1 LECPICLESFDEgQLRPKLLHCGHTICEQCLEKLL-ASLSINGVRCPFCRKV 51

RING finger, HC subclass, found in RING finger protein 152 (RNF152) and similar proteins; RNF152 is a lysosome-anchored E3 ubiquitin-protein ligase involved in apoptosis. It is polyubiquitinated through K48 linkage. It negatively regulates the activation of the mTORC1 pathway by targeting RagA GTPase for K63-linked ubiquitination. It interacts with and ubiquitinates RagA in an amino-acid-sensitive manner. The ubiquitination of RagA recruits its inhibitor GATOR1, a GAP complex for Rag GTPases, to the Rag complex, thereby inactivating mTORC1 signaling. RNF152 contains an N-terminal C3HC4-type RING-HC finger and a C-terminal transmembrane domain, both of which are responsible for its E3 ligase activity.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*....
gi 21410641  38 LECLVCREPYSCPRLPKLLACQHAFCAICLKLLLCVQDNtwsITCPLCR 86
Cdd:cd16548   1 LECQICFNYYSPRRRPKLLDCKHTCCSVCLQQMRTSQKD---LRCPWCR 46

RING finger, HC subclass, found in Caenorhabditis elegans RING finger protein NHL-1 and similar proteins; NHL-1 functions as an E3 ubiquitin-protein ligase in the presence of both UBC-13 and UBC-1 within the ubiquitin pathway of Caenorhabditis elegans. It acts in chemosensory neurons to promote stress resistance in distal tissues by the transcription factor DAF-16 activation but is dispensable for the activation of heat shock factor 1 (HSF-1). NHL-1 belongs to the TRIM (tripartite motif)-NHL family of proteins that are defined by their N-terminal RBCC (RING, Bbox, and coiled coil) domains, including three consecutive zinc-binding domains, a C3HC4-type RING-HC finger, Bbox1 and Bbox2, and a coiled coil domain, as well as an NHL (named after proteins NCL-1, HT2A and Lin-41 that contain repeats folded into a six-bladed beta propeller) repeat domain positioned C-terminal to the RBCC domain.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|..
gi 21410641  38 LECLVCREPYscpRLPKLLACQHAFC-AICLKllLCVQDNTWSITCPLCRKV 88
Cdd:cd16524   6 LTCPICLDRY---RRPKLLPCQHTFClSPCLE--GLVDYVTRKLKCPECRAE 52

RING finger, HC subclass, found in RING finger protein 138 (RNF138) and similar proteins; RNF138, also known as Nemo-like kinase-associated RING finger protein (NARF) or NLK-associated RING finger protein, is an E3 ubiquitin-protein ligase that plays an important role in glioma cell proliferation, apoptosis, and cell cycle. It specifically cooperates with the E2 conjugating enzyme E2-25K (Hip-2/UbcH1), regulates the ubiquitylation and degradation of T cell factor/lymphoid enhancer factor (TCF/LEF), and further suppresses Wnt-beta-catenin signaling. RNF138, together with three closely related proteins: RNF114, RNF125 and RNF166, forms a novel family of ubiquitin ligases with a C3HC4-type RING-HC finger, a C2HC-, and two C2H2-type zinc fingers, as well as a ubiquitin interacting motif (UIM).

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|..
gi 21410641  37 DLECLVCREPYSCPrlPKLLACQHAFCAICLKLLLCVQdntwSITCPLCRKV 88
Cdd:cd16544   2 ELTCPVCQEVLKDP--VELPPCRHIFCKACILLALRSS----GARCPLCRGP 47

RING finger, H2 subclass, found in RING finger protein 115 (RNF115) and similar proteins; RNF115, also known as Rab7-interacting ring finger protein (Rabring 7), or zinc finger protein 364 (ZNF364), or breast cancer-associated gene 2 (BCA2), is an E3 ubiquitin-protein ligase that is an endogenous inhibitor of adenosine monophosphate-activated protein kinase (AMPK) activation and its inhibition increases the efficacy of metformin in breast cancer cells. It also functions as a co-factor in the restriction imposed by tetherin on HIV-1, and targets HIV-1 Gag for lysosomal degradation, impairing virus assembly and release, in a tetherin-independent manner. Moreover, RNF115 is a Rab7-binding protein that stimulates c-Myc degradation through mono-ubiquitination of MM-1. It also plays crucial roles as a Rab7 target protein in vesicle traffic to late endosome/lysosome and lysosome biogenesis. Furthermore, RNF115 and the related protein, RNF126 associate with the epidermal growth factor receptor (EGFR) and promote ubiquitylation of EGFR, suggesting they play a role in the ubiquitin-dependent sorting and downregulation of membrane receptors. RNF115 contains an N-terminal BCA2 Zinc-finger domain (BZF), the AKT-phosphorylation sites, and the C-terminal C3H2C3-type RING-H2 finger.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|
gi 21410641  38 LECLVCREPYSCPRLPKLLACQHAFCAICLKLLLCVQDntwsiTCPLCRK 87
Cdd:cd16800   1 LECPVCKEDYTVGEQVRQLPCNHFFHSDCIVPWLELHD-----TCPVCRK 45

RING-type zinc-finger; This zinc-finger is a typical RING-type of plant ubiquitin ligases.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 21410641    40 CLVCREPYSCPRLPkllaCQHAFCAICLKLLLcvQDNTWSITCP 83
Cdd:pfam13445   1 CPICLELFTDPVLP----CGHTFCRECLEEMS--QKKGGKFKCP 38

RING finger, HC subclass, found in RING finger protein 182 (RNF182) and similar proteins; RNF182 is a brain-enriched E3 ubiquitin-protein ligase that stimulates E2-dependent polyubiquitination in vitro. It is upregulated in Alzheimer"s disease (AD) brains and neuronal cells exposed to injurious insults. It interacts with ATP6V0C and promotes its degradation by the ubiquitin-proteosome pathway, suggesting a very specific role in controlling the turnover of an essential component of the neurotransmitter release machinery. RNF182 contains an N-terminal C3HC4-type RING-HC finger, and a C-terminal transmembrane domain.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*
gi 21410641  37 DLECLVCREPYSC-PRLPKLLACQHAFCAICL-KLLLCVQDNTWSITCPLCRKVT 89
Cdd:cd16555   1 ELECKICYNRYDLrQRRPKVLECCHRVCAKCLyKIVDLGDSSPSVLVCPFCRFET 55

RING finger, HC subclass, found in the family of RING finger proteins RNF19A, RNF19B and similar proteins; The family includes RING finger protein RNF19A and RNF19B, both of which are transmembrane (TM) domain-containing RBR-type E3 ubiquitin-protein ligases. RNF19A, also known as double ring-finger protein (Dorfin) or p38, localizes to the ubiquitylated inclusions in Parkinson's disease (PD), dementia with Lewy bodies, multiple system atrophy, and amyotrophic lateral sclerosis (ALS). It interacts with Psmc3, a protein component of the 19S regulatory cap of the 26S proteasome, and further participates in the ubiquitin-proteasome system in acrosome biogenesis, spermatid head shaping, and development of the head-tail coupling apparatus and tail. It modulates the ubiquitination and degradation of calcium-sensing receptor (CaR), which may contribute to a general mechanism for CaR quality control during biosynthesis. Moreover, RNF19A can also ubiquitylate mutant superoxide dismutase 1 (SOD1), the causative gene of familial ALS. It may associate with endoplasmic reticulum-associated degradation (ERAD) pathway, which is related to the pathogenesis of neurodegenerative disorders, such as PD or Alzheimer's disease. RNF19B, also known as IBR domain-containing protein 3 or natural killer lytic-associated molecule (NKLAM), plays a role in controlling tumor dissemination and metastasis. It is involved in the cytolytic function of natural killer (NK) cells and cytotoxic T lymphocytes (CTLs). It interacts with ubiquitin conjugates UbcH7 and UbcH8, and ubiquitinates uridine kinase like-1 (URKL-1) protein, targeting it for degradation. Moreover, RNF19B is a novel component of macrophage phagosomes and plays a role in macrophage anti-bacterial activity. It functions as a novel modulator of macrophage inducible nitric oxide synthase (iNOS) expression. Both RNF19A and RNF19B contain an RBR domain followed by three TMs. The RBR domain was previously known as RING-BetweenRING-RING domain or TRIAD [two RING fingers and a DRIL (double RING finger linked)] domain. Based on current understanding of the structural biology of RBR ligases, the nomenclature of RBR has been corrected as RING-BRcat (benign-catalytic)-Rcat (required-for-catalysis) recently. The RBR (RING1-BRcat-Rcat) domain uses an auto-inhibitory mechanism to modulate ubiquitination activity, as well as a hybrid mechanism that combines aspects from both RING and HECT E3 ligase function to facilitate the ubiquitination reaction. This model corresponds to the RING domain, a C3HC4-type RING-HC finger required for RBR-mediated ubiquitination.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|
gi 21410641  38 LECLVCREPYSCPRLPKLLACQHAFCAICLK--LLLCVQDNTWSITCPLC 85
Cdd:cd16629   1 LECPLCLDDLSPEFFPILLSCEHRSCRDCLRqyLTIEISESRVNISCPEC 50

RING finger, HC subclass, found in RING finger protein 10 (RNF10) and similar proteins; RNF10 is an E3 ubiquitin-protein ligase that interacts with mesenchyme Homeobox 2 (MEOX2) transcription factor, a regulator of the proliferation, differentiation and migration of vascular smooth muscle cells and cardiomyocytes; it enhances Meox2 activation of the p21 promoter. It also regulates the expression of myelin-associated glycoprotein (MAG) genes and is required for myelin production in Schwann cells of the peripheral nervous system. Moreover, RNF10 regulates retinoic acid-induced neuronal differentiation and the cell cycle exit of P19 embryonic carcinoma cells. RNF10 contains a C3HC4-type RING-HC finger and three putative nuclear localization signals.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*..
gi 21410641  39 ECLVCREPYSCPRLPKllaCQHAFCAICLKLLLCVQDNTWSiTCPLC 85
Cdd:cd16536   2 QCPICLEPPVAPRITR---CGHIFCWPCILRYLSLSEKKWR-KCPIC 44