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Conserved domains on  [gi|5031833|ref|NP_005692|]
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snurportin-1 [Homo sapiens]

Protein Classification

Snurportin1 and Snurportin-1_C domain-containing protein( domain architecture ID 10568941)

Snurportin1 and Snurportin-1_C domain-containing protein

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
Snurportin-1_C cd09232
C-terminal m3G cap-binding domain of nuclear import adaptor snurportin-1; Snurportin-1 (SPN1 ...
 97-280 1.98e-110

C-terminal m3G cap-binding domain of nuclear import adaptor snurportin-1; Snurportin-1 (SPN1 or SNUPN) is a nuclear import adaptor for m3G-capped spliceosomal U small nucleoproteins (snRNPs), which are assembled in the cytoplasm. After capping and assembly, the U snRNPs are transported into the nucleus by SPN1 and importin beta; SPN1 is then returned to the cytoplasm by exportin 1 (CRM1), which also transports the non-capped U snRNPs. The U snRNPs are essential elements of the spliceosome, which catalyzes the excision of introns and the ligation of exons to form a mature mRNA. SPN1 contains two domains, an N-terminal importin beta-binding (IBB) domain and a C-terminal m3G cap-binding domain.


:

Pssm-ID: 185717  Cd Length: 186  Bit Score: 319.97  E-value: 1.98e-110
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 5031833   97 HYANQLMLSEWLIDVPSDLGQEWIVVVCPVGKRALIVASRGSTSAYTKSGYCVNRFSSLLPGGNRRNStAKDYTILDCIY 176
Cdd:cd09232   1 LYANQLMLSEWMVEVPDDLSEEWLVVPCPVGKRCLVVASKGKTVARSKNGRTLHRFSSALPGGSRKTS-NSGYTILDCIY 79

                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 5031833  177 NEVNQTYYVLDVMCWRGHPFYDCQTDFRFYWMHSKLPEEEGLGEKTKLNPFKFVGLKNFPCTPESLCDVLS---MDFPFE 253
Cdd:cd09232  80 NEDDRTYYVLDVLCWNGHPLYDCETEFRFFWLRSKLEELPELDEPSEKNPFRFVPLPYFPCTKESLQSAYSgplNDDPYE 159

                       170       180
                ....*....|....*....|....*..
gi 5031833  254 VDGLLFYHKQTHYSPGSTPLVGWLRPY 280
Cdd:cd09232 160 LDGLLFYHKESHYTPGSTPLVLWLKDY 186
Snurportin1 pfam11538
Snurportin1; Snurportin1 is a novel nuclear import receptor which contains an N-terminal ...
 25-64 1.29e-19

Snurportin1; Snurportin1 is a novel nuclear import receptor which contains an N-terminal importin beta binding domain which is essential for its function of a snRNP-specific nuclear import receptor. Snurportin1 interacts with m3G-cap where it enhances the m3G-cap dependent nuclear import of U snRNPs in Xenopus laevis oocytes and digitonin-permeabilized HeLa cells.


:

Pssm-ID: 402920  Cd Length: 40  Bit Score: 80.83  E-value: 1.29e-19
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|
gi 5031833     25 HPRLSQYKSKYSSLEQSERRRRLLELQKSKRLDYVNHARR 64
Cdd:pfam11538   1 HPRLSQYKKKRSALSQEERRRRLLERQKKKRLDYVNHARR 40
 
Name Accession Description Interval E-value
Snurportin-1_C cd09232
C-terminal m3G cap-binding domain of nuclear import adaptor snurportin-1; Snurportin-1 (SPN1 ...
 97-280 1.98e-110

C-terminal m3G cap-binding domain of nuclear import adaptor snurportin-1; Snurportin-1 (SPN1 or SNUPN) is a nuclear import adaptor for m3G-capped spliceosomal U small nucleoproteins (snRNPs), which are assembled in the cytoplasm. After capping and assembly, the U snRNPs are transported into the nucleus by SPN1 and importin beta; SPN1 is then returned to the cytoplasm by exportin 1 (CRM1), which also transports the non-capped U snRNPs. The U snRNPs are essential elements of the spliceosome, which catalyzes the excision of introns and the ligation of exons to form a mature mRNA. SPN1 contains two domains, an N-terminal importin beta-binding (IBB) domain and a C-terminal m3G cap-binding domain.


Pssm-ID: 185717  Cd Length: 186  Bit Score: 319.97  E-value: 1.98e-110
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 5031833   97 HYANQLMLSEWLIDVPSDLGQEWIVVVCPVGKRALIVASRGSTSAYTKSGYCVNRFSSLLPGGNRRNStAKDYTILDCIY 176
Cdd:cd09232   1 LYANQLMLSEWMVEVPDDLSEEWLVVPCPVGKRCLVVASKGKTVARSKNGRTLHRFSSALPGGSRKTS-NSGYTILDCIY 79

                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 5031833  177 NEVNQTYYVLDVMCWRGHPFYDCQTDFRFYWMHSKLPEEEGLGEKTKLNPFKFVGLKNFPCTPESLCDVLS---MDFPFE 253
Cdd:cd09232  80 NEDDRTYYVLDVLCWNGHPLYDCETEFRFFWLRSKLEELPELDEPSEKNPFRFVPLPYFPCTKESLQSAYSgplNDDPYE 159

                       170       180
                ....*....|....*....|....*..
gi 5031833  254 VDGLLFYHKQTHYSPGSTPLVGWLRPY 280
Cdd:cd09232 160 LDGLLFYHKESHYTPGSTPLVLWLKDY 186
Snurportin1 pfam11538
Snurportin1; Snurportin1 is a novel nuclear import receptor which contains an N-terminal ...
 25-64 1.29e-19

Snurportin1; Snurportin1 is a novel nuclear import receptor which contains an N-terminal importin beta binding domain which is essential for its function of a snRNP-specific nuclear import receptor. Snurportin1 interacts with m3G-cap where it enhances the m3G-cap dependent nuclear import of U snRNPs in Xenopus laevis oocytes and digitonin-permeabilized HeLa cells.


Pssm-ID: 402920  Cd Length: 40  Bit Score: 80.83  E-value: 1.29e-19
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|
gi 5031833     25 HPRLSQYKSKYSSLEQSERRRRLLELQKSKRLDYVNHARR 64
Cdd:pfam11538   1 HPRLSQYKKKRSALSQEERRRRLLERQKKKRLDYVNHARR 40
 
Name Accession Description Interval E-value
Snurportin-1_C cd09232
C-terminal m3G cap-binding domain of nuclear import adaptor snurportin-1; Snurportin-1 (SPN1 ...
 97-280 1.98e-110

C-terminal m3G cap-binding domain of nuclear import adaptor snurportin-1; Snurportin-1 (SPN1 or SNUPN) is a nuclear import adaptor for m3G-capped spliceosomal U small nucleoproteins (snRNPs), which are assembled in the cytoplasm. After capping and assembly, the U snRNPs are transported into the nucleus by SPN1 and importin beta; SPN1 is then returned to the cytoplasm by exportin 1 (CRM1), which also transports the non-capped U snRNPs. The U snRNPs are essential elements of the spliceosome, which catalyzes the excision of introns and the ligation of exons to form a mature mRNA. SPN1 contains two domains, an N-terminal importin beta-binding (IBB) domain and a C-terminal m3G cap-binding domain.


Pssm-ID: 185717  Cd Length: 186  Bit Score: 319.97  E-value: 1.98e-110
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 5031833   97 HYANQLMLSEWLIDVPSDLGQEWIVVVCPVGKRALIVASRGSTSAYTKSGYCVNRFSSLLPGGNRRNStAKDYTILDCIY 176
Cdd:cd09232   1 LYANQLMLSEWMVEVPDDLSEEWLVVPCPVGKRCLVVASKGKTVARSKNGRTLHRFSSALPGGSRKTS-NSGYTILDCIY 79

                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 5031833  177 NEVNQTYYVLDVMCWRGHPFYDCQTDFRFYWMHSKLPEEEGLGEKTKLNPFKFVGLKNFPCTPESLCDVLS---MDFPFE 253
Cdd:cd09232  80 NEDDRTYYVLDVLCWNGHPLYDCETEFRFFWLRSKLEELPELDEPSEKNPFRFVPLPYFPCTKESLQSAYSgplNDDPYE 159

                       170       180
                ....*....|....*....|....*..
gi 5031833  254 VDGLLFYHKQTHYSPGSTPLVGWLRPY 280
Cdd:cd09232 160 LDGLLFYHKESHYTPGSTPLVLWLKDY 186
Adenylation_DNA_ligase_like cd06846
Adenylation domain of proteins similar to ATP-dependent polynucleotide ligases; ATP-dependent ...
 101-279 1.20e-52

Adenylation domain of proteins similar to ATP-dependent polynucleotide ligases; ATP-dependent polynucleotide ligases catalyze the phosphodiester bond formation of nicked nucleic acid substrates using ATP as a cofactor in a three step reaction mechanism. This family includes ATP-dependent DNA and RNA ligases. DNA ligases play a vital role in the diverse processes of DNA replication, recombination and repair. ATP-dependent DNA ligases have a highly modular architecture, consisting of a unique arrangement of two or more discrete domains, including a DNA-binding domain, an adenylation or nucleotidyltransferase (NTase) domain, and an oligonucleotide/oligosaccharide binding (OB)-fold domain. The adenylation domain binds ATP and contains many active site residues. Together with the C-terminal OB-fold domain, it comprises a catalytic core unit that is common to most members of the ATP-dependent DNA ligase family. The catalytic core contains six conserved sequence motifs (I, III, IIIa, IV, V and VI) that define this family of related nucleotidyltransferases including eukaryotic GRP-dependent mRNA-capping enzymes. The catalytic core contains both the active site as well as many DNA-binding residues. The RNA circularization protein from archaea and bacteria contains the minimal catalytic unit, the adenylation domain, but does not contain an OB-fold domain. This family also includes the m3G-cap binding domain of snurportin, a nuclear import adaptor that binds m3G-capped spliceosomal U small nucleoproteins (snRNPs), but doesn't have enzymatic activity.


Pssm-ID: 185704 [Multi-domain]  Cd Length: 182  Bit Score: 172.22  E-value: 1.20e-52
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 5031833  101 QLMLSEWLIDVPS--DLGQEWIVVVCPVGKRALIVASRGSTSAYTKSGYCVNRFSSLLPGgnRRNSTAKDYTILDCIYNE 178
Cdd:cd06846   1 PQLLNPILEEALSeyDEQDEYYVQEKYDGKRALIVALNGGVFAISRTGLEVPLPSILIPG--RELLTLKPGFILDGELVV 78

                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 5031833  179 VN-------QTYYVLDVMCWRGHPFYDCQTDFRFYWMHSKLPEEEGlgektkLNPFKFVGLKNFPCTPESLCDVLSMDFP 251
Cdd:cd06846  79 ENrevanpkPTYYAFDVVPLSGVGLRDLPYSDRFAYLKSLLKEFEG------LDPVKLVPLENAPSYDETLDDLLEKLKK 152

                       170       180       190
                ....*....|....*....|....*....|
gi 5031833  252 FEVDGLLFYHKQTHY--SPGSTPLVGWLRP 279
Cdd:cd06846 153 KGKEGLVFKHPDAPYkgRPGSSGNQLKLKP 182
Snurportin1 pfam11538
Snurportin1; Snurportin1 is a novel nuclear import receptor which contains an N-terminal ...
 25-64 1.29e-19

Snurportin1; Snurportin1 is a novel nuclear import receptor which contains an N-terminal importin beta binding domain which is essential for its function of a snRNP-specific nuclear import receptor. Snurportin1 interacts with m3G-cap where it enhances the m3G-cap dependent nuclear import of U snRNPs in Xenopus laevis oocytes and digitonin-permeabilized HeLa cells.


Pssm-ID: 402920  Cd Length: 40  Bit Score: 80.83  E-value: 1.29e-19
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|
gi 5031833     25 HPRLSQYKSKYSSLEQSERRRRLLELQKSKRLDYVNHARR 64
Cdd:pfam11538   1 HPRLSQYKKKRSALSQEERRRRLLERQKKKRLDYVNHARR 40
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options: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.
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