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protein coding gene - pac1 (SPBC119.11c) - double-strand-specific ribonuclease Pac1

Gene summary

Standard name
pac1
Systematic ID
SPBC119.11c
Product
double-strand-specific ribonuclease Pac1
Organism
Schizosaccharomyces pombe (fission yeast)
Synonyms
hcs, rnt1, snm1
UniProt ID
P22192
ORFeome ID
32/32E01
Characterisation status
biological role published
Feature type
mRNA gene
Genomic location
chromosome II: 737503..738826 reverse strand

Annotation

PBO:0003317 - 3.1.26.3

GO biological process

GO:0106410 - box C/D sno(s)RNA 5'-end processing

References:

GO:0000956 - nuclear-transcribed mRNA catabolic process

References:

GO:0016070 - RNA metabolic process

References:

GO:0006364 - rRNA processing

References:

GO:0030847 - termination of RNA polymerase II transcription, exosome-dependent

References:

GO:0034474 - U2 snRNA 3'-end processing

References:

GO:0034475 - U4 snRNA 3'-end processing

References:

GO cellular component

GO:0005730 - nucleolus

References:

GO:0005654 - nucleoplasm

References:

GO:0005634 - nucleus

References:

GO molecular function

GO:0003725 - double-stranded RNA binding

References:

GO:0032296 - double-stranded RNA-specific ribonuclease activity

References:

GO:0000182 - rDNA binding

References:

GO:0004525 - ribonuclease III activity

References:

GO:0035613 - RNA stem-loop binding

References:

Modification

MOD:00046 - O-phospho-L-serine

References:

MOD:00047 - O-phospho-L-threonine

References:

Multi-locus phenotype

FYPO:0004201 - decreased centromeric outer repeat transcript-derived siRNA level

References:

Genotypes:

FYPO:0003096 - decreased histone H3-K9 methylation at centromere outer repeat during vegetative growth

References:

Genotypes:

FYPO:0002960 - increased level of DSR-containing meiotic gene mRNA during vegetative growth

References:

Genotypes:

FYPO:0001315 - normal vegetative cell morphology

References:

Genotypes:

Qualitative gene expression

PomGeneEx:0000019 - protein level decreased

References:

PomGeneEx:0000012 - RNA level decreased

References:

Quantitative gene expression

PBO:0006310 - protein level

References:

PBO:0011963 - RNA level

References:

Single locus phenotype

FYPO:0000059 - abnormal mitotic cell cycle

References:

Genotypes:

FYPO:0003556 - abnormal transcription termination

References:

Genotypes:

FYPO:0001424 - abolished protein localization to nucleus during vegetative growth

References:

Genotypes:

FYPO:0000082 - decreased cell population growth at high temperature

References:

Genotypes:

FYPO:0004201 - decreased centromeric outer repeat transcript-derived siRNA level

References:

Genotypes:

FYPO:0007883 - decreased cleavage-dependent termination of RNA polymerase II transcription

References:

Genotypes:

FYPO:0000303 - decreased conjugation frequency

References:

Genotypes:

FYPO:0007223 - decreased establishment of chromatin silencing at centromere outer repeat region

References:

Genotypes:

FYPO:0003096 - decreased histone H3-K9 methylation at centromere outer repeat during vegetative growth

References:

Genotypes:

FYPO:0000708 - decreased mating efficiency

References:

Genotypes:

FYPO:0004204 - decreased mature snRNA level

References:

Genotypes:

FYPO:0003029 - decreased mRNA splicing, via spliceosome

References:

Genotypes:

FYPO:0001152 - decreased RNA level during nitrogen starvation

References:

Genotypes:

FYPO:0001117 - decreased RNA level during vegetative growth

References:

Genotypes:

FYPO:0003041 - decreased snRNA splicing

References:

Genotypes:

FYPO:0000584 - decreased sporulation frequency

References:

Genotypes:

FYPO:0002894 - decreased transcription during cellular response to calcium ion

References:

Genotypes:

FYPO:0001555 - formation of abnormal tRNA processing intermediates

References:

Genotypes:

FYPO:0002960 - increased level of DSR-containing meiotic gene mRNA during vegetative growth

References:

Genotypes:

FYPO:0004342 - increased LTR-derived RNA level

References:

Genotypes:

FYPO:0001890 - increased RNA level

References:

Genotypes:

FYPO:0003600 - increased rRNA precursor level

References:

Genotypes:

FYPO:0003700 - increased snoRNA primary transcript level

References:

Genotypes:

FYPO:0002430 - inviable after spore germination, multiple cell divisions

References:

Genotypes:

FYPO:0003529 - inviable after spore germination, multiple cell divisions, cell cycle arrest in mitotic interphase, elongated cells

References:

Genotypes:

FYPO:0001490 - inviable elongated vegetative cell

References:

Genotypes:

FYPO:0002061 - inviable vegetative cell population

References:

Genotypes:

FYPO:0001147 - normal mating efficiency

References:

Genotypes:

FYPO:0001317 - normal RNA level during vegetative growth

References:

Genotypes:

FYPO:0002896 - normal transcription during cellular response to calcium ion

References:

Genotypes:

FYPO:0001315 - normal vegetative cell morphology

References:

Genotypes:

FYPO:0001357 - normal vegetative cell population growth

References:

Genotypes:

FYPO:0000111 - sensitive to rapamycin

References:

Genotypes:

FYPO:0000280 - sterile

References:

Genotypes:

FYPO:0002060 - viable vegetative cell population

References:

Genotypes:

FYPO:0002177 - viable vegetative cell with normal cell morphology

References:

Genotypes:

Taxonomic conservation

PBO:0011067 - conserved in bacteria

PBO:0011065 - conserved in eukaryotes

PBO:0011064 - conserved in fungi

PBO:0011069 - conserved in metazoa

PBO:0011070 - conserved in vertebrates

PBO:0006222 - predominantly single copy (one to one)

Protein features

IDNameInterPro nameDB name
PF00035dsrmdsRBD_domPfam
PF00636Ribonuclease_3RNase_III_domPfam
cd00593RIBOcRNase_III_domCDD
cd19876DSRM_RNT1p-likeRnt1/Pac1_DSRM_fungiCDD
PS00517RNASE_3_1RNase_III_domPROSITE patterns
PS50137DS_RBDdsRBD_domPROSITE profiles
PS50142RNASE_3_2RNase_III_domPROSITE profiles
SM00358DSRMdsRBD_domSMART
SM00535RIBOcRNase_III_domSMART
G3DSA:1.10.1520.10:FF:000001CATH-FunFam
G3DSA:1.10.1520.10RNase_III_sfCATH-Gene3D
G3DSA:3.30.160.20CATH-Gene3D
SSF54768SUPERFAMILY
SSF69065RNase_III_sfSUPERFAMILY
PTHR11207PANTHER
mobidb-lite-Disorderdisorder_predictionMobiDB-Disorder
mobidb-lite-Low-complexitydisorder_predictionMobiDB-Low-complexity
mobidb-lite-Positive-Polyelectrolytedisorder_predictionMobiDB-Positive-Polyelectrolyte

Orthologs

References / Literature

GO_REF:0000024 - Manual transfer of experimentally-verified manual GO annotation data to orthologs by curator judgment of sequence similarity.
PMID:7616961 - Rescue of the fission yeast snRNA synthesis mutant snm1 by overexpression of the double-strand-specific Pac1 ribonuclease.
Rotondo G et al. Mol Gen Genet 1995 Jun 25;247(6):698-708
PMID:22496451 - Genetic screening for regulators of Prz1, a transcriptional factor acting downstream of calcineurin in fission yeast.
Koike A et al. J Biol Chem 2012 Jun 01;287(23):19294-303
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:27984744 - Survival in Quiescence Requires the Euchromatic Deployment of Clr4/SUV39H by Argonaute-Associated Small RNAs.
Joh RI et al. Mol Cell 2016 Dec 15;64(6):1088-1101
PMID:20609363 - Pac1 endonuclease and Dhp1p 5'-->3' exonuclease are required for U3 snoRNA termination in Schizosaccharomyces pombe.
Nabavi S et al. FEBS Lett 2010 Aug 04;584(15):3436-41
PMID:2205842 - A gene from S. pombe with homology to E. coli RNAse III blocks conjugation and sporulation when overexpressed in wild type cells.
Xu HP et al. Nucleic Acids Res 1990 Sep 11;18(17):5304
PMID:2406130 - A mutation in a single gene of Schizosaccharomyces pombe affects the expression of several snRNAs and causes defects in RNA processing.
Potashkin J et al. EMBO J 1990 Feb;9(2):525-34
PMID:18254616 - MMM-QSAR recognition of ribonucleases without alignment: comparison with an HMM model and isolation from Schizosaccharomyces pombe, prediction, and experimental assay of a new sequence.
Agüero-Chapín G et al. J Chem Inf Model 2008 Feb;48(2):434-48
PMID:9326493 - Substrate structure requirements of the Pac1 ribonuclease from Schizosaccharmyces pombe.
Rotondo G et al. RNA 1997 Oct;3(10):1182-93
PMID:31474649 - Identification of 15 New Bypassable Essential Genes of Fission Yeast.
Takeda A et al. Cell Struct Funct 2019 Sep 27;44(2):113-119
PMID:42420319 - Spliceosomal proteins direct RNA methylation to modulate gene expression and silence retrotransposons.
Vijayakumari D et al. Nat Commun 2026 Jul 08;
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:1989884 - S. pombe pac1+, whose overexpression inhibits sexual development, encodes a ribonuclease III-like RNase.
Iino Y et al. EMBO J 1991 Jan;10(1):221-6
PMID:10445882 - Pac1p, an RNase III homolog, is required for formation of the 3' end of U2 snRNA in Schizosaccharomyces pombe.
Zhou D et al. RNA 1999 Aug;5(8):1083-98
PMID:2840284 - The S.pombe mei2 gene encoding a crucial molecule for commitment to meiosis is under the regulation of cAMP.
Watanabe Y et al. EMBO J 1988 Mar;7(3):761-7
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:33823663 - A TOR (target of rapamycin) and nutritional phosphoproteome of fission yeast reveals novel targets in networks conserved in humans.
Halova L et al. Open Biol 2021 Apr;11(4):200405
PMID:20152800 - Cleavage-induced termination in U2 snRNA gene expression.
Nabavi S et al. Biochem Biophys Res Commun 2010 Mar 12;393(3):461-5
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:34352089 - Co-transcriptional RNA cleavage by Drosha homolog Pac1 triggers transcription termination in fission yeast.
Yague-Sanz C et al. Nucleic Acids Res 2021 Sep 07;49(15):8610-8624
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
GO_REF:0000033 - Annotation inferences using phylogenetic trees
PMID:40859013 - RNase III cleavage sites spread across splice junctions enforce sequential snoRNA processing.
Migeot V et al. EMBO Rep 2025 Aug 26;
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:8534915 - Schizosaccharomyces pombe zfs1+ encoding a zinc-finger protein functions in the mating pheromone recognition pathway.
Kanoh J et al. Mol Biol Cell 1995 Sep;6(9):1185-95
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: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:8144551 - Cloning of the pka1 gene encoding the catalytic subunit of the cAMP-dependent protein kinase in Schizosaccharomyces pombe.
Maeda T et al. J Biol Chem 1994 Apr 01;269(13):9632-7
PMID:8710510 - Purification and characterization of the Pac1 ribonuclease of Schizosaccharomyces pombe.
Rotondo G et al. Nucleic Acids Res 1996 Jun 15;24(12):2377-86
PMID:21511999 - Comparative functional genomics of the fission yeasts.
Rhind N et al. Science 2011 May 20;332(6032):930-6