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protein coding gene - imp1 (SPBC1604.08c) - importin alpha family nuclear import signal receptor adaptor Imp1

Gene summary

Standard name
imp1
Systematic ID
SPBC1604.08c
Product
importin alpha family nuclear import signal receptor adaptor Imp1
Organism
Schizosaccharomyces pombe (fission yeast)
UniProt ID
O94374
ORFeome ID
25/25H09
Characterisation status
biological role published
Feature type
mRNA gene
Genomic location
chromosome II: 3916555..3918514 forward strand

Annotation

GO biological process

GO:0140516 - mitotic nuclear pore complex disassembly

References:

GO:0006607 - NLS-bearing protein import into nucleus

References:

GO:0006606 - protein import into nucleus

References:

GO:1905557 - regulation of mitotic nuclear envelope disassembly

References:

GO cellular component

GO:0005829 - cytosol

References:

GO:0042564 - NLS-dependent protein nuclear import complex

References:

GO:0005635 - nuclear envelope

References:

GO:0034399 - nuclear periphery

References:

GO:0005730 - nucleolus

References:

GO:0005634 - nucleus

References:

GO molecular function

GO:0005525 - GTP binding

References:

GO:0061608 - nuclear import signal receptor activity

References:

GO:0008139 - nuclear localization sequence binding

References:

GO:0005515 - protein binding

References:

Modification

MOD:00046 - O-phospho-L-serine

References:

Multi-locus phenotype

FYPO:0006606 - abnormal dynamic protein localization pattern

References:

Genotypes:

FYPO:0000337 - abnormal mitosis

References:

Genotypes:

FYPO:0000141 - abnormal mitotic sister chromatid segregation

References:

Genotypes:

FYPO:0003779 - abnormal nuclear envelope morphology during mitosis

References:

Genotypes:

FYPO:0003783 - abnormal nuclear pore localization during mitosis

References:

Genotypes:

FYPO:0004622 - abolished mitotic spindle disassembly

References:

Genotypes:

FYPO:0007546 - abolished nuclear envelope division

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Genotypes:

FYPO:0000082 - decreased cell population growth at high temperature

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Genotypes:

FYPO:0006100 - decreased protein localization to cytoplasm, with protein mislocalized to nucleus

References:

Genotypes:

FYPO:0000836 - increased protein level

References:

Genotypes:

FYPO:0001991 - inviable after spore germination, without cell division

References:

Genotypes:

FYPO:0001490 - inviable elongated vegetative cell

References:

Genotypes:

FYPO:0000951 - inviable small vegetative cell

References:

Genotypes:

FYPO:0002061 - inviable vegetative cell population

References:

Genotypes:

FYPO:0006338 - nucleus mislocalized towards cell tip during mitotic telophase

References:

Genotypes:

Protein features

PBO:0111894 - armadillo repeat protein

PBO:0111795 - importin family

Quantitative gene expression

PBO:0006310 - protein level

References:

PBO:0011963 - RNA level

References:

Single locus phenotype

FYPO:0006606 - abnormal dynamic protein localization pattern

References:

Genotypes:

FYPO:0003783 - abnormal nuclear pore localization during mitosis

References:

Genotypes:

FYPO:0004622 - abolished mitotic spindle disassembly

References:

Genotypes:

FYPO:0007546 - abolished nuclear envelope division

References:

Genotypes:

FYPO:0004835 - abolished protein localization to nucleus during cellular response to hydrogen peroxide

References:

Genotypes:

FYPO:0006010 - abolished shmoo contact with partner cell

References:

Genotypes:

FYPO:0007549 - coalescence of partially separated nuclei

References:

Genotypes:

FYPO:0009053 - decreased cell population growth on glutamate nitrogen source

References:

Genotypes:

FYPO:0009091 - decreased cell population growth on lysine and proline nitrogen source

References:

Genotypes:

FYPO:0001176 - decreased cell population growth on sucrose carbon source

References:

Genotypes:

FYPO:0009097 - decreased cell population growth on xylose carbon source

References:

Genotypes:

FYPO:0000708 - decreased mating efficiency

References:

Genotypes:

FYPO:0003189 - decreased protein import into nucleus

References:

Genotypes:

FYPO:0004056 - decreased protein localization to nucleus, with protein mislocalized to cytoplasm

References:

Genotypes:

FYPO:0001355 - decreased vegetative cell population growth

References:

Genotypes:

FYPO:0006559 - delayed onset of mitotic spindle disassembly

References:

Genotypes:

FYPO:0006012 - elongated cell with abolished shmoo formation

References:

Genotypes:

FYPO:0004806 - incomplete cell wall disassembly at cell fusion site

References:

Genotypes:

FYPO:0005261 - increased cell population growth on galactose carbon source

References:

Genotypes:

FYPO:0007545 - increased duration of protein localization to mitotic nuclear bridge

References:

Genotypes:

FYPO:0004884 - increased duration of protein localization to mitotic spindle midzone

References:

Genotypes:

FYPO:0001908 - increased pre-mRNA level

References:

Genotypes:

FYPO:0000836 - increased protein level

References:

Genotypes:

FYPO:0004117 - inviable after spore germination, without cell division, normal septum morphology

References:

Genotypes:

FYPO:0000839 - inviable elongated mononucleate aseptate cell

References:

Genotypes:

FYPO:0001490 - inviable elongated vegetative cell

References:

Genotypes:

FYPO:0002061 - inviable vegetative cell population

References:

Genotypes:

FYPO:0000245 - loss of viability in stationary phase

References:

Genotypes:

FYPO:0006339 - mononucleate vegetative cell with mislocalized nucleus

References:

Genotypes:

FYPO:0002620 - normal growth on trichostatin A

References:

Genotypes:

FYPO:0003302 - nucleus mislocalized towards cell tip during mitotic interphase

References:

Genotypes:

FYPO:0009036 - resistance to benzamidine

References:

Genotypes:

FYPO:0000077 - resistance to rapamycin

References:

Genotypes:

FYPO:0009040 - resistance to tea tree oil

References:

Genotypes:

FYPO:0007933 - sensitive to 2,2′-dipyridyl

References:

Genotypes:

FYPO:0001098 - sensitive to 4-nitroquinoline N-oxide

References:

Genotypes:

FYPO:0001097 - sensitive to amitrole

References:

Genotypes:

FYPO:0009067 - sensitive to amorolfine

References:

Genotypes:

FYPO:0001701 - sensitive to bortezomib

References:

Genotypes:

FYPO:0001501 - sensitive to brefeldin A

References:

Genotypes:

FYPO:0000097 - sensitive to caffeine during vegetative growth

References:

Genotypes:

FYPO:0000085 - sensitive to camptothecin

References:

Genotypes:

FYPO:0000104 - sensitive to cycloheximide

References:

Genotypes:

FYPO:0000799 - sensitive to diamide

References:

Genotypes:

FYPO:0000842 - sensitive to ethanol during vegetative growth

References:

Genotypes:

FYPO:0000785 - sensitive to formamide

References:

Genotypes:

FYPO:0000087 - sensitive to hydrogen peroxide

References:

Genotypes:

FYPO:0000088 - sensitive to hydroxyurea

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Genotypes:

FYPO:0009071 - sensitive to itraconazole

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Genotypes:

FYPO:0001719 - sensitive to lithium

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Genotypes:

FYPO:0009086 - sensitive to lithium chloride and sodium dodecyl sulfate

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Genotypes:

FYPO:0006836 - sensitive to magnesium chloride

References:

Genotypes:

FYPO:0009088 - sensitive to magnesium chloride and sodium dodecyl sulfate

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Genotypes:

FYPO:0000089 - sensitive to methyl methanesulfonate

References:

Genotypes:

FYPO:0000726 - sensitive to oxidative stress

References:

Genotypes:

FYPO:0001214 - sensitive to potassium chloride

References:

Genotypes:

FYPO:0009082 - sensitive to potassium chloride and methyl methanesulfonate

References:

Genotypes:

FYPO:0007924 - sensitive to potassium chloride and sodium dodecyl sulfate

References:

Genotypes:

FYPO:0002617 - sensitive to sodium butyrate

References:

Genotypes:

FYPO:0005252 - sensitive to tamoxifen

References:

Genotypes:

FYPO:0000797 - sensitive to tert-butyl hydroperoxide

References:

Genotypes:

FYPO:0002701 - sensitive to torin1

References:

Genotypes:

FYPO:0001457 - sensitive to tunicamycin

References:

Genotypes:

FYPO:0000268 - sensitive to UV during vegetative growth

References:

Genotypes:

FYPO:0000115 - sensitive to valproic acid

References:

Genotypes:

FYPO:0003656 - sensitive to vanadate

References:

Genotypes:

FYPO:0003612 - viable spore population

References:

Genotypes:

FYPO:0002476 - viable vacuolated vegetative cell, abnormal cell shape, normal cell size

References:

Genotypes:

FYPO:0002060 - viable vegetative cell population

References:

Genotypes:

Taxonomic conservation

PBO:0011065 - conserved in eukaryotes

PBO:0011071 - conserved in eukaryotes only

PBO:0011064 - conserved in fungi

PBO:0011069 - conserved in metazoa

PBO:0011070 - conserved in vertebrates

Protein features

IDNameInterPro nameDB name
PF00514ArmArmadilloPFAM
PF16186Arm_3Arm_3PFAM
PF01749IBBImportin-a_IBBPFAM
PS51214IBBImportin-a_IBBPROSITE_PROFILES
PS50176ARM_REPEATArmadilloPROSITE_PROFILES
SM00185arm_5ArmadilloSMART
G3DSA:1.25.10.10:FF:000021FUNFAM
SSF48371ARM repeatARM-type_foldSUPERFAMILY
G3DSA:1.25.10.10ARM-likeGENE3D
G3DSA:1.20.5.690Importin-a_IBB_sfGENE3D
PTHR23316IMPORTIN ALPHAPANTHER
PIRSF005673Importin_alphaImportin_alphaPIRSF
CoilCoilCOILS

Orthologs

References / Literature

PMID:28410370 - A systematic screen for morphological abnormalities during fission yeast sexual reproduction identifies a mechanism of actin aster formation for cell fusion.
Dudin O et al. PLoS Genet 2017 Apr;13(4):e1006721
PMID:37787768 - Broad functional profiling of fission yeast proteins using phenomics and machine learning.
Rodríguez-López M et al. Elife 2023 Oct 03;12
PMID:37615341 - Schizosaccharomyces pombe Rtf2 is important for replication fork barrier activity of RTS1 via splicing of Rtf1 .
Budden AM et al. Elife 2023 Aug 24;12
PMID:20537132 - Global fitness profiling of fission yeast deletion strains by barcode sequencing.
Han TX et al. Genome Biol 2010;11(6):R60
PMID:29958883 - Role of nucleocytoplasmic transport in interphase microtubule organization in fission yeast.
Kume K et al. Biochem Biophys Res Commun 2018 Sep 05;503(2):1160-1167
PMID:15937127 - The fission yeast Schizosaccharomyces pombe has two importin-alpha proteins, Imp1p and Cut15p, which have common and unique functions in nucleocytoplasmic transport and cell cycle progression.
Umeda M et al. Genetics 2005 Sep;171(1):7-21
PMID:23697806 - A genome-wide resource of cell cycle and cell shape genes of fission yeast.
Hayles J et al. Open Biol 2013 May 22;3(5):130053
PMID:20473289 - Analysis of a genome-wide set of gene deletions in the fission yeast Schizosaccharomyces pombe.
Kim DU et al. Nat Biotechnol 2010 Jun;28(6):617-623
PMID:23861937 - Genome-wide screening for genes associated with valproic acid sensitivity in fission yeast.
Zhang L et al. PLoS One 2013;8(7):e68738
PMID:16823372 - ORFeome cloning and global analysis of protein localization in the fission yeast Schizosaccharomyces pombe.
Matsuyama A et al. Nat Biotechnol 2006 Jul;24(7):841-7
PMID:26098123 - Promoter nucleosome dynamics regulated by signalling through the CTD code.
Materne P et al. Elife 2015 Jun 22;4:e09008
PMID:30824696 - Systematic analysis reveals the prevalence and principles of bypassable gene essentiality.
Li J et al. Nat Commun 2019 Mar 01;10(1):1002
PMID:32848252 - Closed mitosis requires local disassembly of the nuclear envelope.
Dey G et al. Nature 2020 Sep;585(7823):119-123
PMID:34250083 - Barcode sequencing and a high-throughput assay for chronological lifespan uncover ageing-associated genes in fission yeast.
Romila CA et al. Microb Cell 2021 Jul 05;8(7):146-160
PMID:21760946 - Identification of genes affecting the toxicity of anti-cancer drug bortezomib by genome-wide screening in S. pombe.
Takeda K et al. PLoS One 2011;6(7):e22021
PMID:36799444 - Inner nuclear membrane proteins Lem2 and Bqt4 interact with different lipid synthesis enzymes in fission yeast.
Hirano Y et al. J Biochem 2023 Jun 30;174(1):33-46
PMID:39367033 - Quantitative proteomics and phosphoproteomics profiling of meiotic divisions in the fission yeast Schizosaccharomyces pombe.
Sivakova B et al. Sci Rep 2024 Oct 04;14(1):23105
PMID:39473973 - Limiting 20S proteasome assembly leads to unbalanced nucleo-cytoplasmic distribution of 26S/30S proteasomes and chronic proteotoxicity.
Ruiz-Romero G et al. iScience 2024 Nov 15;27(11):111095
PMID:41259369 - Hydroxyurea induces an oxidative stress response that triggers ER expansion and cytoplasmic protein aggregation.
Sánchez-Molina A et al. PLoS Biol 2025 Nov 19;23(11):e3003493
GO_REF:0000033 - Annotation inferences using phylogenetic trees
PMID:15116432 - Identification of genes encoding putative nucleoporins and transport factors in the fission yeast Schizosaccharomyces pombe: a deletion analysis.
Chen XQ et al. Yeast 2004 Apr 30;21(6):495-509
PMID:30726745 - Fission Yeast NDR/LATS Kinase Orb6 Regulates Exocytosis via Phosphorylation of the Exocyst Complex.
Tay YD et al. Cell Rep 2019 Feb 05;26(6):1654-1667.e7
PMID:23950735 - Global analysis of fission yeast mating genes reveals new autophagy factors.
Sun LL et al. PLoS Genet 2013;9(8):e1003715
PMID:11751918 - The fission yeast ES2 homologue, Bis1, interacts with the Ish1 stress-responsive nuclear envelope protein.
Taricani L et al. J Biol Chem 2002 Mar 22;277(12):10562-72
PMID:12237855 - Genome-wide search of Schizosaccharomyces pombe genes causing overexpression-mediated cell cycle defects.
Tallada VA et al. Yeast 2002 Sep 30;19(13):1139-51
PMID:21712547 - Mitotic substrates of the kinase aurora with roles in chromatin regulation identified through quantitative phosphoproteomics of fission yeast.
Koch A et al. Sci Signal 2011 Jun 28;4(179):rs6
PMID:19547744 - Evolution of phosphoregulation: comparison of phosphorylation patterns across yeast species.
Beltrao P et al. PLoS Biol 2009 Jun 16;7(6):e1000134
PMID:32502403 - Selective Nuclear Pore Complex Removal Drives Nuclear Envelope Division in Fission Yeast.
Expósito-Serrano M et al. Curr Biol 2020 Aug 17;30(16):3212-3222.e2
PMID:23101633 - Quantitative analysis of fission yeast transcriptomes and proteomes in proliferating and quiescent cells.
Marguerat S et al. Cell 2012 Oct 26;151(3):671-83
PMID:25330182 - Characterization of the nuclear import mechanism of the CCAAT-regulatory subunit Php4.
Khan MG et al. PLoS One 2014;9(10):e110721
PMID:25720772 - Quantitative phosphoproteomics reveals pathways for coordination of cell growth and division by the conserved fission yeast kinase pom1.
Kettenbach AN et al. Mol Cell Proteomics 2015 May;14(5):1275-87
PMID:28281664 - Genetic interactions and functional analyses of the fission yeast gsk3 and amk2 single and double mutants defective in TORC1-dependent processes.
Rallis C et al. Sci Rep 2017 Mar 10;7:44257
PMID:30853434 - NDR Kinase Sid2 Drives Anillin-like Mid1 from the Membrane to Promote Cytokinesis and Medial Division Site Placement.
Willet AH et al. Curr Biol 2019 Mar 18;29(6):1055-1063.e2
PMID:33109728 - High-Throughput Identification of Nuclear Envelope Protein Interactions in Schizosaccharomyces pombe Using an Arrayed Membrane Yeast-Two Hybrid Library.
Varberg JM et al. G3 (Bethesda) 2020 Dec 03;10(12):4649-4663
PMID:17615301 - Multiple conserved domains of the nucleoporin Nup124p and its orthologs Nup1p and Nup153 are critical for nuclear import and activity of the fission yeast Tf1 retrotransposon.
Sistla S et al. Mol Biol Cell 2007 Sep;18(9):3692-708
PMID:19264558 - Screening a genome-wide S. pombe deletion library identifies novel genes and pathways involved in genome stability maintenance.
Deshpande GP et al. DNA Repair (Amst) 2009 May 01;8(5):672-9
GO_REF:0000051 - S. pombe keyword mapping
PMID:26628015 - Characterization of Tamoxifen as an Antifungal Agent Using the Yeast Schizosaccharomyces Pombe Model Organism.
Zhang X et al. Kobe J Med Sci 2015 Oct 09;61(2):E54-63
PMID:17476213 - Alp7/TACC is a crucial target in Ran-GTPase-dependent spindle formation in fission yeast.
Sato M et al. Nature 2007 May 17;447(7142):334-7
PMID:26771498 - A Proteome-wide Fission Yeast Interactome Reveals Network Evolution Principles from Yeasts to Human.
Vo TV et al. Cell 2016 Jan 14;164(1-2):310-323
PMID:27172183 - Interconnections Between RNA-Processing Pathways Revealed by a Sequencing-Based Genetic Screen for Pre-mRNA Splicing Mutants in Fission Yeast.
Larson A et al. G3 (Bethesda) 2016 Jun 01;6(6):1513-23
PMID:39705284 - Proteomic and phosphoproteomic analyses reveal that TORC1 is reactivated by pheromone signaling during sexual reproduction in fission yeast.
Bérard M et al. PLoS Biol 2024 Dec 20;22(12):e3002963
PMID:21511999 - Comparative functional genomics of the fission yeasts.
Rhind N et al. Science 2011 May 20;332(6032):930-6
PMID:22681890 - Hierarchical modularity and the evolution of genetic interactomes across species.
Ryan CJ et al. Mol Cell 2012 Jun 08;46(5):691-704
PMID:24763107 - Absolute proteome and phosphoproteome dynamics during the cell cycle of Schizosaccharomyces pombe (Fission Yeast).
Carpy A et al. Mol Cell Proteomics 2014 Aug;13(8):1925-36
PMID:23163955 - Analysis of stress-induced duplex destabilization (SIDD) properties of replication origins, genes and intergenes in the fission yeast, Schizosaccharomyces pombe.
Yadav MP et al. BMC Res Notes 2012 Nov 19;5:643
PMID:24713849 - Post-transcriptional regulation of meiotic genes by a nuclear RNA silencing complex.
Egan ED et al. RNA 2014 Jun;20(6):867-81
PMID:29694900 - Importin α and vNEBD Control Meiotic Spindle Disassembly in Fission Yeast.
Flor-Parra I et al. Cell Rep 2018 Apr 24;23(4):933-941