Amelogenins, cell adhesion proteins, play a role in the biomineralisation of teeth; They seem ...
114-216
4.53e-08
Amelogenins, cell adhesion proteins, play a role in the biomineralisation of teeth; They seem to regulate formation of crystallites during the secretory stage of tooth enamel development and are thought to play a major role in the structural organisation and mineralisation of developing enamel. The extracellular matrix of the developing enamel comprises two major classes of protein: the hydrophobic amelogenins and the acidic enamelins. Circular dichroism studies of porcine amelogenin have shown that the protein consists of 3 discrete folding units: the N-terminal region appears to contain beta-strand structures, while the C-terminal region displays characteristics of a random coil conformation. Subsequent studies on the bovine protein have indicated the amelogenin structure to contain a repetitive beta-turn segment and a "beta-spiral" between Gln112 and Leu138, which sequester a (Pro, Leu, Gln) rich region. The beta-spiral offers a probable site for interactions with Ca2+ ions. Muatations in the human amelogenin gene (AMGX) cause X-linked hypoplastic amelogenesis imperfecta, a disease characterised by defective enamel. A 9bp deletion in exon 2 of AMGX results in the loss of codons for Ile5, Leu6, Phe7 and Ala8, and replacement by a new threonine codon, disrupting the 16-residue (Met1-Ala16) amelogenin signal peptide.
The actual alignment was detected with superfamily member smart00818:
Pssm-ID: 197891 [Multi-domain] Cd Length: 165 Bit Score: 55.18 E-value: 4.53e-08
Ribonuclease-like Prp8 domain IV core; This family contains Prp8 domain IV, which adopts a ...
2463-2714
2.25e-168
Ribonuclease-like Prp8 domain IV core; This family contains Prp8 domain IV, which adopts a RNase H like fold within its core structure but with little sequence similarity. Prp8, a spliceosome protein, interacts directly with the splice sites and branch regions of precursor-mRNAs and spliceosomal RNAs associated with catalysis of the two steps of splicing. Catalysis of RNA cleavage by RNase H-like proteins involves a two-metal mechanism in which adjacently-bound divalent magnesium ions promote hydrolysis by activation of a water nucleophile and stabilization of the transition-state. However, the Prp8 domain IV contains only one of the canonical metal-binding sites and the coordinating side chains are spatially conserved with respect to Mg2+-coordinating residues within the RNase H fold.
Pssm-ID: 260013 Cd Length: 251 Bit Score: 518.44 E-value: 2.25e-168
Amelogenins, cell adhesion proteins, play a role in the biomineralisation of teeth; They seem ...
114-216
4.53e-08
Amelogenins, cell adhesion proteins, play a role in the biomineralisation of teeth; They seem to regulate formation of crystallites during the secretory stage of tooth enamel development and are thought to play a major role in the structural organisation and mineralisation of developing enamel. The extracellular matrix of the developing enamel comprises two major classes of protein: the hydrophobic amelogenins and the acidic enamelins. Circular dichroism studies of porcine amelogenin have shown that the protein consists of 3 discrete folding units: the N-terminal region appears to contain beta-strand structures, while the C-terminal region displays characteristics of a random coil conformation. Subsequent studies on the bovine protein have indicated the amelogenin structure to contain a repetitive beta-turn segment and a "beta-spiral" between Gln112 and Leu138, which sequester a (Pro, Leu, Gln) rich region. The beta-spiral offers a probable site for interactions with Ca2+ ions. Muatations in the human amelogenin gene (AMGX) cause X-linked hypoplastic amelogenesis imperfecta, a disease characterised by defective enamel. A 9bp deletion in exon 2 of AMGX results in the loss of codons for Ile5, Leu6, Phe7 and Ala8, and replacement by a new threonine codon, disrupting the 16-residue (Met1-Ala16) amelogenin signal peptide.
Pssm-ID: 197891 [Multi-domain] Cd Length: 165 Bit Score: 55.18 E-value: 4.53e-08
JAB/MPN domain; Domain in Jun kinase activation domain binding protein and proteasomal ...
2840-2947
4.29e-07
JAB/MPN domain; Domain in Jun kinase activation domain binding protein and proteasomal subunits. Domain at Mpr1p and Pad1p N-termini. Domain of unknown function.
Pssm-ID: 214573 Cd Length: 135 Bit Score: 51.61 E-value: 4.29e-07
Sine oculis-binding protein; SOBP is associated with syndromic and nonsyndromic intellectual ...
100-229
5.51e-06
Sine oculis-binding protein; SOBP is associated with syndromic and nonsyndromic intellectual disability. It carries a zinc-finger of the zf-C2H2 type at the N-terminus, and a highly characteriztic C-terminal PhPhPhPhPhPh motif. The deduced 873-amino acid protein contains an N-terminal nuclear localization signal (NLS), followed by 2 FCS-type zinc finger motifs, a proline-rich region (PR1), a putative RNA-binding motif region, and a C-terminal NLS embedded in a second proline-rich motif. SOBP is expressed in various human tissues, including developing mouse brain at embryonic day 14. In postnatal and adult mouse brain SOBP is expressed in all neurons, with intense staining in the limbic system. Highest expression is in layer V cortical neurons, hippocampus, pyriform cortex, dorsomedial nucleus of thalamus, amygdala, and hypothalamus. Postnatal expression of SOBP in the limbic system corresponds to a time of active synaptogenesis. the family is also referred to as Jackson circler, JXC1. In seven affected siblings from a consanguineous Israeli Arab family with mental retardation, anterior maxillary protrusion, and strabismus mutations were found in this protein.
Pssm-ID: 464609 [Multi-domain] Cd Length: 325 Bit Score: 51.35 E-value: 5.51e-06
N-terminal domain of Kruppel-like factors with similarity to the N-terminal domains of ...
146-217
1.80e-03
N-terminal domain of Kruppel-like factors with similarity to the N-terminal domains of Kruppel-like factor (KLF)1, KLF2, and KLF4; Kruppel/Krueppel-like transcription factors (KLFs) belong to a family of proteins called the Specificity Protein (SP)/KLF family, characterized by a C-terminal DNA-binding domain of 81 amino acids consisting of three Kruppel-like C2H2 zinc fingers. These factors bind to a loose consensus motif, namely NNRCRCCYY (where N is any nucleotide; R is A/G, and Y is C/T), such as the recurring motifs in GC and GT boxes (5'-GGGGCGGGG-3' and 5-GGTGTGGGG-3') that are present in promoters and more distal regulatory elements of mammalian genes. Members of the KLF family can act as activators or repressors of transcription depending on cell and promoter context. KLFs regulate various cellular functions, such as proliferation, differentiation, and apoptosis, as well as the development and homeostasis of several types of tissue. In addition to the C-terminal DNA-binding domain, each KLF also has a unique N-terminal activation/repression domain that confers specifity and allows it to bind specifically to a certain partner, leading to distinct activities in vivo. This model represents the N-terminal domains of an unknown subfamily of KLFs, predominantly found in fish, related to the N-terminal domains of KLF1, KLF2, and KLF4.
Pssm-ID: 409231 [Multi-domain] Cd Length: 339 Bit Score: 43.49 E-value: 1.80e-03
Ribonuclease-like Prp8 domain IV core; This family contains Prp8 domain IV, which adopts a ...
2463-2714
2.25e-168
Ribonuclease-like Prp8 domain IV core; This family contains Prp8 domain IV, which adopts a RNase H like fold within its core structure but with little sequence similarity. Prp8, a spliceosome protein, interacts directly with the splice sites and branch regions of precursor-mRNAs and spliceosomal RNAs associated with catalysis of the two steps of splicing. Catalysis of RNA cleavage by RNase H-like proteins involves a two-metal mechanism in which adjacently-bound divalent magnesium ions promote hydrolysis by activation of a water nucleophile and stabilization of the transition-state. However, the Prp8 domain IV contains only one of the canonical metal-binding sites and the coordinating side chains are spatially conserved with respect to Mg2+-coordinating residues within the RNase H fold.
Pssm-ID: 260013 Cd Length: 251 Bit Score: 518.44 E-value: 2.25e-168
PRP8 domain IV core; This domain is found in eukaryotes, and is about 20 amino acids in length. ...
2457-2687
2.26e-151
PRP8 domain IV core; This domain is found in eukaryotes, and is about 20 amino acids in length. It is found associated with pfam10597, pfam10596, pfam10598, pfam08083, pfam08082, pfam01398, pfam08084. There is a conserved LILR sequence motif. The domain is a selenomethionine domain in a subunit of the spliceosome. The function of PRP8 domain IV is believed to be interaction with the splicosomal core.
Pssm-ID: 432353 Cd Length: 230 Bit Score: 468.77 E-value: 2.26e-151
PRO8NT (NUC069), PrP8 N-terminal domain; The PRO8NT domain is found at the N-terminus of ...
404-555
6.21e-110
PRO8NT (NUC069), PrP8 N-terminal domain; The PRO8NT domain is found at the N-terminus of pre-mRNA splicing factors of PRO8 family. The NLS or nuclear localization signal for these spliceosome proteins begins at the start and runs for 60 residues. N-terminal to this domain is a highly variable proline-rich region.
Pssm-ID: 462361 [Multi-domain] Cd Length: 152 Bit Score: 346.59 E-value: 6.21e-110
U6-snRNA interacting domain of PrP8; This domain incorporates the interacting site for the ...
2098-2254
5.18e-106
U6-snRNA interacting domain of PrP8; This domain incorporates the interacting site for the U6-snRNA as part of the U4/U6.U5 tri-snRNPs complex of the spliceosome, and is the prime candidate for the role of cofactor for the spliceosome's RNA core. The essential spliceosomal protein Prp8 interacts with U5 and U6 snRNAs and with specific pre-mRNA sequences that participate in catalysis. This close association with crucial RNA sequences, together with extensive genetic evidence, suggests that Prp8 could directly affect the function of the catalytic core, perhaps acting as a splicing cofactor.
Pssm-ID: 431383 Cd Length: 159 Bit Score: 335.61 E-value: 5.18e-106
Mpr1p, Pad1p N-terminal (MPN) domains without isopeptidase activity found in splicing factor ...
2767-3118
1.39e-105
Mpr1p, Pad1p N-terminal (MPN) domains without isopeptidase activity found in splicing factor Prp8; Members of this family are found in pre-mRNA-processing factor 8 (Prp8) which is a critical splicing factor, interacting with several other spliceosomal proteins, snRNAs, and the pre-mRNA, thus organizing and stabilizing the spliceosome catalytic core. Prp8 is one of the largest and most highly conserved of nuclear proteins, occupying a central position in the catalytic core of the spliceosome. Its C-terminal domain exhibits a JAB1/MPN-like core similar to deubiquitinating enzymes, but does not show catalytic isopeptidase activity, possibly because the putative isopeptidase center is covered by insertions and terminal appendices that are grafted onto this core, thus impairing the metal binding site. It is proposed that this domain is a protein interaction domain instead of a Zn(2+)-dependent metalloenzyme as proposed for some MPN proteins. The DEAD-box protein Brr2 and the GTPase Snu114 bind to the Prp8 C-terminus, a region where mutations in human Prp8 (hPrp8) cause a severe form of the genetic disorder retinitis pigmentosa, RP13, which leads to progressive photoreceptor degeneration in the retina and eventual blindness. At the N-terminus of Prp8, there are several domains, including a highly variable nuclear localization signal (NLS) motif rich in prolines, a conserved RNA recognition motif (RRM), and U5 and U6 snRNA binding sites.
Pssm-ID: 163687 [Multi-domain] Cd Length: 252 Bit Score: 338.45 E-value: 1.39e-105
U5-snRNA binding site 2 of PrP8; The essential spliceosomal protein Prp8 interacts with U5 and ...
1865-1997
1.10e-77
U5-snRNA binding site 2 of PrP8; The essential spliceosomal protein Prp8 interacts with U5 and U6 snRNAs and with specific pre-mRNA sequences that participate in catalysis. This close association with crucial RNA sequences, together with extensive genetic evidence, suggests that Prp8 could directly affect the function of the catalytic core, perhaps acting as a splicing cofactor.
Pssm-ID: 402297 Cd Length: 134 Bit Score: 253.46 E-value: 1.10e-77
RNA recognition motif of the spliceosomal PrP8; The large RNA-protein complex of the ...
1533-1624
3.57e-33
RNA recognition motif of the spliceosomal PrP8; The large RNA-protein complex of the spliceosome catalyzes pre-mRNA splicing. One of the most conserved core proteins is PrP8 which occupies a central position in the catalytic core of the spliceosome, and has been implicated in several crucial molecular rearrangements that occur there, and has recently come under the spotlight for its role in the inherited human disease, Retinitis Pigmentosa. The RNA-recognition motif of PrP8 is highly conserved and provides a possible RNA binding centre for the 5-prime SS, BP, or 3-prime SS of pre-mRNA which are known to contact with Prp8. The most conserved regions of an RRM are defined as the RNP1 and RNP2 sequences. Recognition of RNA targets can also be modulated by a number of other factors, most notably the two loops beta1-alpha1, beta2-beta3 and the amino acid residues C-terminal to the RNP2 domain.
Pssm-ID: 463163 Cd Length: 92 Bit Score: 124.66 E-value: 3.57e-33
Amelogenins, cell adhesion proteins, play a role in the biomineralisation of teeth; They seem ...
114-216
4.53e-08
Amelogenins, cell adhesion proteins, play a role in the biomineralisation of teeth; They seem to regulate formation of crystallites during the secretory stage of tooth enamel development and are thought to play a major role in the structural organisation and mineralisation of developing enamel. The extracellular matrix of the developing enamel comprises two major classes of protein: the hydrophobic amelogenins and the acidic enamelins. Circular dichroism studies of porcine amelogenin have shown that the protein consists of 3 discrete folding units: the N-terminal region appears to contain beta-strand structures, while the C-terminal region displays characteristics of a random coil conformation. Subsequent studies on the bovine protein have indicated the amelogenin structure to contain a repetitive beta-turn segment and a "beta-spiral" between Gln112 and Leu138, which sequester a (Pro, Leu, Gln) rich region. The beta-spiral offers a probable site for interactions with Ca2+ ions. Muatations in the human amelogenin gene (AMGX) cause X-linked hypoplastic amelogenesis imperfecta, a disease characterised by defective enamel. A 9bp deletion in exon 2 of AMGX results in the loss of codons for Ile5, Leu6, Phe7 and Ala8, and replacement by a new threonine codon, disrupting the 16-residue (Met1-Ala16) amelogenin signal peptide.
Pssm-ID: 197891 [Multi-domain] Cd Length: 165 Bit Score: 55.18 E-value: 4.53e-08
JAB/MPN domain; Domain in Jun kinase activation domain binding protein and proteasomal ...
2840-2947
4.29e-07
JAB/MPN domain; Domain in Jun kinase activation domain binding protein and proteasomal subunits. Domain at Mpr1p and Pad1p N-termini. Domain of unknown function.
Pssm-ID: 214573 Cd Length: 135 Bit Score: 51.61 E-value: 4.29e-07
Sine oculis-binding protein; SOBP is associated with syndromic and nonsyndromic intellectual ...
100-229
5.51e-06
Sine oculis-binding protein; SOBP is associated with syndromic and nonsyndromic intellectual disability. It carries a zinc-finger of the zf-C2H2 type at the N-terminus, and a highly characteriztic C-terminal PhPhPhPhPhPh motif. The deduced 873-amino acid protein contains an N-terminal nuclear localization signal (NLS), followed by 2 FCS-type zinc finger motifs, a proline-rich region (PR1), a putative RNA-binding motif region, and a C-terminal NLS embedded in a second proline-rich motif. SOBP is expressed in various human tissues, including developing mouse brain at embryonic day 14. In postnatal and adult mouse brain SOBP is expressed in all neurons, with intense staining in the limbic system. Highest expression is in layer V cortical neurons, hippocampus, pyriform cortex, dorsomedial nucleus of thalamus, amygdala, and hypothalamus. Postnatal expression of SOBP in the limbic system corresponds to a time of active synaptogenesis. the family is also referred to as Jackson circler, JXC1. In seven affected siblings from a consanguineous Israeli Arab family with mental retardation, anterior maxillary protrusion, and strabismus mutations were found in this protein.
Pssm-ID: 464609 [Multi-domain] Cd Length: 325 Bit Score: 51.35 E-value: 5.51e-06
Sine oculis-binding protein; SOBP is associated with syndromic and nonsyndromic intellectual ...
96-210
2.71e-05
Sine oculis-binding protein; SOBP is associated with syndromic and nonsyndromic intellectual disability. It carries a zinc-finger of the zf-C2H2 type at the N-terminus, and a highly characteriztic C-terminal PhPhPhPhPhPh motif. The deduced 873-amino acid protein contains an N-terminal nuclear localization signal (NLS), followed by 2 FCS-type zinc finger motifs, a proline-rich region (PR1), a putative RNA-binding motif region, and a C-terminal NLS embedded in a second proline-rich motif. SOBP is expressed in various human tissues, including developing mouse brain at embryonic day 14. In postnatal and adult mouse brain SOBP is expressed in all neurons, with intense staining in the limbic system. Highest expression is in layer V cortical neurons, hippocampus, pyriform cortex, dorsomedial nucleus of thalamus, amygdala, and hypothalamus. Postnatal expression of SOBP in the limbic system corresponds to a time of active synaptogenesis. the family is also referred to as Jackson circler, JXC1. In seven affected siblings from a consanguineous Israeli Arab family with mental retardation, anterior maxillary protrusion, and strabismus mutations were found in this protein.
Pssm-ID: 464609 [Multi-domain] Cd Length: 325 Bit Score: 49.04 E-value: 2.71e-05
Mpr1p, Pad1p N-terminal (MPN) domains; MPN (also known as Mov34, PAD-1, JAMM, JAB, MPN+) ...
2855-2919
2.95e-04
Mpr1p, Pad1p N-terminal (MPN) domains; MPN (also known as Mov34, PAD-1, JAMM, JAB, MPN+) domains are found in the N-terminal termini of proteins with a variety of functions; they are components of the proteasome regulatory subunits, the signalosome (CSN), eukaryotic translation initiation factor 3 (eIF3) complexes, and regulators of transcription factors. These domains are isopeptidases that release ubiquitin from ubiquitinated proteins (thus having deubiquitinating (DUB) activity) that are tagged for degradation. Catalytically active MPN domains contain a metalloprotease signature known as the JAB1/MPN/Mov34 metalloenzyme (JAMM) motif. For example, Rpn11 (also known as POH1 or PSMD14), a subunit of the 19S proteasome lid is involved in the ATP-dependent degradation of ubiquitinated proteins, contains the conserved JAMM motif involved in zinc ion coordination. Poh1 is a regulator of c-Jun, an important regulator of cell proliferation, differentiation, survival and death. JAB1 is a component of the COP9 signalosome (CSN), a regulatory particle of the ubiquitin (Ub)/26S proteasome system occurring in all eukaryotic cells; it cleaves the ubiquitin-like protein NEDD8 from the cullin subunit of the SCF (Skp1, Cullins, F-box proteins) family of E3 ubiquitin ligases. AMSH (associated molecule with the SH3 domain of STAM, also known as STAMBP), a member of JAMM/MPN+ deubiquitinases (DUBs), specifically cleaves Lys 63-linked polyubiquitin (poly-Ub) chains, thus facilitating the recycling and subsequent trafficking of receptors to the cell surface. Similarly, BRCC36, part of the nuclear complex that includes BRCA1 protein and is targeted to DNA damage foci after irradiation, specifically disassembles K63-linked polyUb. BRCC36 is aberrantly expressed in sporadic breast tumors, indicative of a potential role in the pathogenesis of the disease. Some variants of the JAB1/MPN domains lack key residues in their JAMM motif and are unable to coordinate a metal ion. Comparisons of key catalytic and metal binding residues explain why the MPN-containing proteins Mov34/PSMD7, Rpn8, CSN6, Prp8p, and the translation initiation factor 3 subunits f (p47) and h (p40) do not show catalytic isopeptidase activity. It has been proposed that the MPN domain in these proteins has a primarily structural function.
Pssm-ID: 163686 [Multi-domain] Cd Length: 116 Bit Score: 42.88 E-value: 2.95e-04
JAB1/Mov34/MPN/PAD-1 ubiquitin protease; Members of this family are found in proteasome ...
2840-2940
1.59e-03
JAB1/Mov34/MPN/PAD-1 ubiquitin protease; Members of this family are found in proteasome regulatory subunits, eukaryotic initiation factor 3 (eIF3) subunits and regulators of transcription factors. This family is also known as the MPN domain and PAD-1-like domain, JABP1 domain or JAMM domain. These are metalloenzymes that function as the ubiquitin isopeptidase/ deubiquitinase in the ubiquitin-based signalling and protein turnover pathways in eukaryotes. Versions of the domain in prokaryotic cognates of the ubiquitin-modification pathway are shown to have a similar role, and the archael protein from Haloferax volcanii is found to cleave ubiquitin-like small archaeal modifier proteins (SAMP1/2) from protein conjugates.
Pssm-ID: 396120 Cd Length: 117 Bit Score: 40.79 E-value: 1.59e-03
N-terminal domain of Kruppel-like factors with similarity to the N-terminal domains of ...
146-217
1.80e-03
N-terminal domain of Kruppel-like factors with similarity to the N-terminal domains of Kruppel-like factor (KLF)1, KLF2, and KLF4; Kruppel/Krueppel-like transcription factors (KLFs) belong to a family of proteins called the Specificity Protein (SP)/KLF family, characterized by a C-terminal DNA-binding domain of 81 amino acids consisting of three Kruppel-like C2H2 zinc fingers. These factors bind to a loose consensus motif, namely NNRCRCCYY (where N is any nucleotide; R is A/G, and Y is C/T), such as the recurring motifs in GC and GT boxes (5'-GGGGCGGGG-3' and 5-GGTGTGGGG-3') that are present in promoters and more distal regulatory elements of mammalian genes. Members of the KLF family can act as activators or repressors of transcription depending on cell and promoter context. KLFs regulate various cellular functions, such as proliferation, differentiation, and apoptosis, as well as the development and homeostasis of several types of tissue. In addition to the C-terminal DNA-binding domain, each KLF also has a unique N-terminal activation/repression domain that confers specifity and allows it to bind specifically to a certain partner, leading to distinct activities in vivo. This model represents the N-terminal domains of an unknown subfamily of KLFs, predominantly found in fish, related to the N-terminal domains of KLF1, KLF2, and KLF4.
Pssm-ID: 409231 [Multi-domain] Cd Length: 339 Bit Score: 43.49 E-value: 1.80e-03
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
of the residues that compose this conserved feature have been mapped to the query sequence.
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