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O95149

- SPN1_HUMAN

UniProt

O95149 - SPN1_HUMAN

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Protein

Snurportin-1

Gene
SNUPN, RNUT1, SPN1
Organism
Homo sapiens (Human)
Status
Reviewed - Annotation score: 5 out of 5 - Experimental evidence at protein leveli

Functioni

Functions as an U snRNP-specific nuclear import adapter. Involved in the trimethylguanosine (m3G)-cap-dependent nuclear import of U snRNPs. Binds specifically to the terminal m3G-cap U snRNAs.1 Publication

GO - Molecular functioni

  1. protein transporter activity Source: InterPro
  2. RNA cap binding Source: ProtInc

GO - Biological processi

  1. gene expression Source: Reactome
  2. ncRNA metabolic process Source: Reactome
  3. protein import into nucleus Source: InterPro
  4. RNA metabolic process Source: Reactome
  5. snRNA import into nucleus Source: InterPro
  6. spliceosomal snRNP assembly Source: Reactome
Complete GO annotation...

Keywords - Biological processi

Transport

Keywords - Ligandi

RNA-binding

Enzyme and pathway databases

ReactomeiREACT_11066. snRNP Assembly.

Names & Taxonomyi

Protein namesi
Recommended name:
Snurportin-1
Alternative name(s):
RNA U transporter 1
Gene namesi
Name:SNUPN
Synonyms:RNUT1, SPN1
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
ProteomesiUP000005640: Chromosome 15

Organism-specific databases

HGNCiHGNC:14245. SNUPN.

Subcellular locationi

Nucleus. Cytoplasm
Note: Nucleoplasmic shuttling protein. Its nuclear import involves the nucleocytoplasmic transport receptor importin beta. It is re-exported to the cytoplasm by the XPO1-dependent nuclear export receptor pathway.2 Publications

GO - Cellular componenti

  1. cytosol Source: Reactome
  2. extracellular vesicular exosome Source: UniProt
  3. nuclear pore Source: ProtInc
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus

Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Mutagenesisi27 – 271R → A: Abolishes interaction with KPNB1 and m3G-cap U1 snRNP import receptor activity. 1 Publication
Mutagenesisi107 – 1071W → A: Reduces binding to m3G-cap structure, interaction with XPO1 and snRNP import receptor activity. 2 Publications
Mutagenesisi203 – 2075FRFYW → A: Reduces binding to m3G-cap structure. 1 Publication
Mutagenesisi276 – 2761W → A: Reduces binding to m3G-cap structure, interaction with XPO1 and snRNP import receptor activity. 2 Publications

Organism-specific databases

PharmGKBiPA34611.

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 360360Snurportin-1PRO_0000191071Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei1 – 11N-acetylmethionine1 Publication
Modified residuei75 – 751Phosphoserine1 Publication

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

MaxQBiO95149.
PaxDbiO95149.
PeptideAtlasiO95149.
PRIDEiO95149.

PTM databases

PhosphoSiteiO95149.

Expressioni

Gene expression databases

ArrayExpressiO95149.
BgeeiO95149.
CleanExiHS_SNUPN.
GenevestigatoriO95149.

Organism-specific databases

HPAiCAB005004.

Interactioni

Subunit structurei

Component of an import snRNP complex composed of KPNB1, SNUPN, SMN1 and ZNF259. Component of a nuclear export receptor complex composed of KPNB1, Ran, SNUPN and XPO1. Found in a trimeric export complex with SNUPN, Ran and XPO1. Interacts with DDX20, IPO7, KPNB1, SMN1, SNRPB and XPO1. Interacts directly with XPO1. Its interaction with XPO1 and binding to m3G-cap U snRNPs appears to be mutually exclusive.3 Publications

Protein-protein interaction databases

BioGridi115384. 16 interactions.
DIPiDIP-48513N.
IntActiO95149. 11 interactions.
MINTiMINT-1378592.
STRINGi9606.ENSP00000309831.

Structurei

Secondary structure

360
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Helixi1 – 1010
Beta strandi21 – 233
Helixi28 – 303
Helixi42 – 6019
Turni61 – 633
Beta strandi97 – 1004
Beta strandi102 – 1076
Helixi115 – 1184
Beta strandi119 – 13517
Beta strandi138 – 1425
Beta strandi144 – 1463
Beta strandi148 – 1525
Beta strandi155 – 1595
Beta strandi161 – 1633
Beta strandi165 – 1673
Beta strandi170 – 1778
Helixi178 – 1803
Beta strandi182 – 19110
Helixi201 – 21111
Turni212 – 2143
Turni216 – 2194
Beta strandi225 – 2317
Beta strandi234 – 2363
Helixi239 – 2468
Beta strandi254 – 26310
Beta strandi268 – 27710
Helixi279 – 2813
Helixi282 – 2865
Beta strandi291 – 2933
Helixi294 – 2963

3D structure databases

Select the link destinations:
PDBe
RCSB PDB
PDBj
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1XK5X-ray2.40A97-300[»]
2P8QX-ray2.35B25-64[»]
2Q5DX-ray3.20C/D25-64[»]
2QNAX-ray2.84B1-66[»]
3GB8X-ray2.90B1-328[»]
3GJXX-ray2.50B/E1-360[»]
3LWWX-ray3.15B/D25-64[»]
3NBYX-ray3.42B/E15-360[»]
3NBZX-ray2.80B/E15-360[»]
3NC0X-ray2.90B/E15-360[»]
ProteinModelPortaliO95149.
SMRiO95149. Positions 12-360.

Miscellaneous databases

EvolutionaryTraceiO95149.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini11 – 7363IBBAdd
BLAST

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni1 – 159159Necessary for interaction with XPO1Add
BLAST
Regioni1 – 6565Necessary for interaction with KPNB1 and m3G-cap U1 and U5 snRNP import receptor activityAdd
BLAST
Regioni208 – 328121Necessary for binding to the m3G-cap structureAdd
BLAST

Sequence similaritiesi

Belongs to the snurportin family.
Contains 1 IBB domain.

Phylogenomic databases

eggNOGiNOG317385.
HOGENOMiHOG000012990.
HOVERGENiHBG053257.
InParanoidiO95149.
KOiK13151.
OrthoDBiEOG7J70GG.
PhylomeDBiO95149.
TreeFamiTF313108.

Family and domain databases

InterProiIPR002652. Importin-a_IBB.
IPR017336. Snurportin-1.
IPR024721. Snurportin-1_N.
[Graphical view]
PfamiPF11538. Snurportin1. 1 hit.
[Graphical view]
PIRSFiPIRSF037955. Snurportin-1. 1 hit.
PROSITEiPS51214. IBB. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

O95149-1 [UniParc]FASTAAdd to Basket

« Hide

MEELSQALAS SFSVSQDLNS TAAPHPRLSQ YKSKYSSLEQ SERRRRLLEL    50
QKSKRLDYVN HARRLAEDDW TGMESEEENK KDDEEMDIDT VKKLPKHYAN 100
QLMLSEWLID VPSDLGQEWI VVVCPVGKRA LIVASRGSTS AYTKSGYCVN 150
RFSSLLPGGN RRNSTAKDYT ILDCIYNEVN QTYYVLDVMC WRGHPFYDCQ 200
TDFRFYWMHS KLPEEEGLGE KTKLNPFKFV GLKNFPCTPE SLCDVLSMDF 250
PFEVDGLLFY HKQTHYSPGS TPLVGWLRPY MVSDVLGVAV PAGPLTTKPD 300
YAGHQLQQIM EHKKSQKEGM KEKLTHKASE NGHYELEHLS TPKLKGSSHS 350
PDHPGCLMEN 360
Length:360
Mass (Da):41,143
Last modified:May 1, 1999 - v1
Checksum:i50B456D1C23B4BA1
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AF039029 mRNA. Translation: AAC70906.1.
CR456811 mRNA. Translation: CAG33092.1.
AK289475 mRNA. Translation: BAF82164.1.
CH471136 Genomic DNA. Translation: EAW99245.1.
CH471136 Genomic DNA. Translation: EAW99246.1.
BC004203 mRNA. Translation: AAH04203.1.
CCDSiCCDS10281.1.
RefSeqiNP_001036046.1. NM_001042581.1.
NP_001036053.1. NM_001042588.1.
NP_005692.1. NM_005701.3.
UniGeneiHs.21577.

Genome annotation databases

EnsembliENST00000308588; ENSP00000309831; ENSG00000169371.
ENST00000564644; ENSP00000454852; ENSG00000169371.
ENST00000564675; ENSP00000458053; ENSG00000169371.
ENST00000567134; ENSP00000456224; ENSG00000169371.
GeneIDi10073.
KEGGihsa:10073.
UCSCiuc002ban.3. human.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AF039029 mRNA. Translation: AAC70906.1 .
CR456811 mRNA. Translation: CAG33092.1 .
AK289475 mRNA. Translation: BAF82164.1 .
CH471136 Genomic DNA. Translation: EAW99245.1 .
CH471136 Genomic DNA. Translation: EAW99246.1 .
BC004203 mRNA. Translation: AAH04203.1 .
CCDSi CCDS10281.1.
RefSeqi NP_001036046.1. NM_001042581.1.
NP_001036053.1. NM_001042588.1.
NP_005692.1. NM_005701.3.
UniGenei Hs.21577.

3D structure databases

Select the link destinations:
PDBe
RCSB PDB
PDBj
Links Updated
Entry Method Resolution (Å) Chain Positions PDBsum
1XK5 X-ray 2.40 A 97-300 [» ]
2P8Q X-ray 2.35 B 25-64 [» ]
2Q5D X-ray 3.20 C/D 25-64 [» ]
2QNA X-ray 2.84 B 1-66 [» ]
3GB8 X-ray 2.90 B 1-328 [» ]
3GJX X-ray 2.50 B/E 1-360 [» ]
3LWW X-ray 3.15 B/D 25-64 [» ]
3NBY X-ray 3.42 B/E 15-360 [» ]
3NBZ X-ray 2.80 B/E 15-360 [» ]
3NC0 X-ray 2.90 B/E 15-360 [» ]
ProteinModelPortali O95149.
SMRi O95149. Positions 12-360.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

BioGridi 115384. 16 interactions.
DIPi DIP-48513N.
IntActi O95149. 11 interactions.
MINTi MINT-1378592.
STRINGi 9606.ENSP00000309831.

PTM databases

PhosphoSitei O95149.

Proteomic databases

MaxQBi O95149.
PaxDbi O95149.
PeptideAtlasi O95149.
PRIDEi O95149.

Protocols and materials databases

DNASUi 10073.
Structural Biology Knowledgebase Search...

Genome annotation databases

Ensembli ENST00000308588 ; ENSP00000309831 ; ENSG00000169371 .
ENST00000564644 ; ENSP00000454852 ; ENSG00000169371 .
ENST00000564675 ; ENSP00000458053 ; ENSG00000169371 .
ENST00000567134 ; ENSP00000456224 ; ENSG00000169371 .
GeneIDi 10073.
KEGGi hsa:10073.
UCSCi uc002ban.3. human.

Organism-specific databases

CTDi 10073.
GeneCardsi GC15M075890.
HGNCi HGNC:14245. SNUPN.
HPAi CAB005004.
MIMi 607902. gene.
neXtProti NX_O95149.
PharmGKBi PA34611.
GenAtlasi Search...

Phylogenomic databases

eggNOGi NOG317385.
HOGENOMi HOG000012990.
HOVERGENi HBG053257.
InParanoidi O95149.
KOi K13151.
OrthoDBi EOG7J70GG.
PhylomeDBi O95149.
TreeFami TF313108.

Enzyme and pathway databases

Reactomei REACT_11066. snRNP Assembly.

Miscellaneous databases

EvolutionaryTracei O95149.
GeneWikii SNUPN.
GenomeRNAii 10073.
NextBioi 38077.
PROi O95149.
SOURCEi Search...

Gene expression databases

ArrayExpressi O95149.
Bgeei O95149.
CleanExi HS_SNUPN.
Genevestigatori O95149.

Family and domain databases

InterProi IPR002652. Importin-a_IBB.
IPR017336. Snurportin-1.
IPR024721. Snurportin-1_N.
[Graphical view ]
Pfami PF11538. Snurportin1. 1 hit.
[Graphical view ]
PIRSFi PIRSF037955. Snurportin-1. 1 hit.
PROSITEi PS51214. IBB. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

« Hide 'large scale' publications
  1. "Snurportin1, an m3G-cap-specific nuclear import receptor with a novel domain structure."
    Huber J., Cronshagen U., Kadokura M., Marshallsay C., Wada T., Sekine M., Luehrmann R.
    EMBO J. 17:4114-4126(1998) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA], PROTEIN SEQUENCE OF 34-52; 54-69; 128-144; 211-221 AND 323-327, FUNCTION IN U SNRNP NUCLEAR IMPORT, INTERACTION WITH KPNB1, RNA-BINDING.
    Tissue: Brain.
  2. "Cloning of human full open reading frames in Gateway(TM) system entry vector (pDONR201)."
    Ebert L., Schick M., Neubert P., Schatten R., Henze S., Korn B.
    Submitted (JUN-2004) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
  3. "Complete sequencing and characterization of 21,243 full-length human cDNAs."
    Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S.
    , Yamamoto J., Saito K., Kawai Y., Isono Y., Nakamura Y., Nagahari K., Murakami K., Yasuda T., Iwayanagi T., Wagatsuma M., Shiratori A., Sudo H., Hosoiri T., Kaku Y., Kodaira H., Kondo H., Sugawara M., Takahashi M., Kanda K., Yokoi T., Furuya T., Kikkawa E., Omura Y., Abe K., Kamihara K., Katsuta N., Sato K., Tanikawa M., Yamazaki M., Ninomiya K., Ishibashi T., Yamashita H., Murakawa K., Fujimori K., Tanai H., Kimata M., Watanabe M., Hiraoka S., Chiba Y., Ishida S., Ono Y., Takiguchi S., Watanabe S., Yosida M., Hotuta T., Kusano J., Kanehori K., Takahashi-Fujii A., Hara H., Tanase T.-O., Nomura Y., Togiya S., Komai F., Hara R., Takeuchi K., Arita M., Imose N., Musashino K., Yuuki H., Oshima A., Sasaki N., Aotsuka S., Yoshikawa Y., Matsunawa H., Ichihara T., Shiohata N., Sano S., Moriya S., Momiyama H., Satoh N., Takami S., Terashima Y., Suzuki O., Nakagawa S., Senoh A., Mizoguchi H., Goto Y., Shimizu F., Wakebe H., Hishigaki H., Watanabe T., Sugiyama A., Takemoto M., Kawakami B., Yamazaki M., Watanabe K., Kumagai A., Itakura S., Fukuzumi Y., Fujimori Y., Komiyama M., Tashiro H., Tanigami A., Fujiwara T., Ono T., Yamada K., Fujii Y., Ozaki K., Hirao M., Ohmori Y., Kawabata A., Hikiji T., Kobatake N., Inagaki H., Ikema Y., Okamoto S., Okitani R., Kawakami T., Noguchi S., Itoh T., Shigeta K., Senba T., Matsumura K., Nakajima Y., Mizuno T., Morinaga M., Sasaki M., Togashi T., Oyama M., Hata H., Watanabe M., Komatsu T., Mizushima-Sugano J., Satoh T., Shirai Y., Takahashi Y., Nakagawa K., Okumura K., Nagase T., Nomura N., Kikuchi H., Masuho Y., Yamashita R., Nakai K., Yada T., Nakamura Y., Ohara O., Isogai T., Sugano S.
    Nat. Genet. 36:40-45(2004) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
    Tissue: Cerebellum.
  4. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
  5. "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
    The MGC Project Team
    Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
    Tissue: Uterus.
  6. Cited for: IDENTIFICATION IN A NUCLEAR EXPORT RECEPTOR COMPLEX, INTERACTION WITH IPO7; KPNB1 AND XPO1, IDENTIFICATION IN A TRIMERIC EXPORT COMPLEX WITH XPO1 AND RAN, SUBCELLULAR LOCATION.
  7. "SMN, the spinal muscular atrophy protein, forms a pre-import snRNP complex with snurportin1 and importin beta."
    Narayanan U., Ospina J.K., Frey M.R., Hebert M.D., Matera A.G.
    Hum. Mol. Genet. 11:1785-1795(2002) [PubMed] [Europe PMC] [Abstract]
    Cited for: IDENTIFICATION IN AN IMPORT SNRNP COMPLEX, INTERACTION WITH DDX20; SMN1 AND SNRPB, SUBCELLULAR LOCATION.
  8. Cited for: MUTAGENESIS OF ARG-27; TRP-107; 203-PHE--TRP-207 AND TRP-276, RNA-BINDING.
  9. Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
    Tissue: Cervix carcinoma.
  10. "Quantitative phosphoproteomics reveals widespread full phosphorylation site occupancy during mitosis."
    Olsen J.V., Vermeulen M., Santamaria A., Kumar C., Miller M.L., Jensen L.J., Gnad F., Cox J., Jensen T.S., Nigg E.A., Brunak S., Mann M.
    Sci. Signal. 3:RA3-RA3(2010) [PubMed] [Europe PMC] [Abstract]
    Cited for: ACETYLATION [LARGE SCALE ANALYSIS] AT MET-1, IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
    Tissue: Cervix carcinoma.
  11. Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
  12. "System-wide temporal characterization of the proteome and phosphoproteome of human embryonic stem cell differentiation."
    Rigbolt K.T., Prokhorova T.A., Akimov V., Henningsen J., Johansen P.T., Kratchmarova I., Kassem M., Mann M., Olsen J.V., Blagoev B.
    Sci. Signal. 4:RS3-RS3(2011) [PubMed] [Europe PMC] [Abstract]
    Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-75, IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
  13. "Structural basis for m3G-cap-mediated nuclear import of spliceosomal UsnRNPs by snurportin1."
    Strasser A., Dickmanns A., Luehrmann R., Ficner R.
    EMBO J. 24:2235-2243(2005) [PubMed] [Europe PMC] [Abstract]
    Cited for: X-RAY CRYSTALLOGRAPHY (2.4 ANGSTROMS) OF 97-300 IN COMPLEX WITH M3G-CAP, MUTAGENESIS OF TRP-107 AND TRP-276.

Entry informationi

Entry nameiSPN1_HUMAN
AccessioniPrimary (citable) accession number: O95149
Secondary accession number(s): A6NE34, A8K0B0, D3DW76
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 6, 2005
Last sequence update: May 1, 1999
Last modified: September 3, 2014
This is version 117 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. Human chromosome 15
    Human chromosome 15: entries, gene names and cross-references to MIM
  2. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  3. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  4. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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