ID PAN3_SCHPO Reviewed; 589 AA.
AC Q9UST1;
DT 31-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-2000, sequence version 1.
DT 24-JAN-2024, entry version 142.
DE RecName: Full=PAN2-PAN3 deadenylation complex subunit pan3 {ECO:0000255|HAMAP-Rule:MF_03181};
DE AltName: Full=PAB1P-dependent poly(A)-specific ribonuclease {ECO:0000255|HAMAP-Rule:MF_03181};
DE AltName: Full=Poly(A)-nuclease deadenylation complex subunit 3 {ECO:0000255|HAMAP-Rule:MF_03181};
DE Short=PAN deadenylation complex subunit 3 {ECO:0000255|HAMAP-Rule:MF_03181};
GN Name=ppk26; Synonyms=pan3 {ECO:0000255|HAMAP-Rule:MF_03181};
GN ORFNames=SPBC336.14c;
OS Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Taphrinomycotina;
OC Schizosaccharomycetes; Schizosaccharomycetales; Schizosaccharomycetaceae;
OC Schizosaccharomyces.
OX NCBI_TaxID=284812;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=972 / ATCC 24843;
RX PubMed=11859360; DOI=10.1038/nature724;
RA Wood V., Gwilliam R., Rajandream M.A., Lyne M.H., Lyne R., Stewart A.,
RA Sgouros J.G., Peat N., Hayles J., Baker S.G., Basham D., Bowman S.,
RA Brooks K., Brown D., Brown S., Chillingworth T., Churcher C.M., Collins M.,
RA Connor R., Cronin A., Davis P., Feltwell T., Fraser A., Gentles S.,
RA Goble A., Hamlin N., Harris D.E., Hidalgo J., Hodgson G., Holroyd S.,
RA Hornsby T., Howarth S., Huckle E.J., Hunt S., Jagels K., James K.D.,
RA Jones L., Jones M., Leather S., McDonald S., McLean J., Mooney P.,
RA Moule S., Mungall K.L., Murphy L.D., Niblett D., Odell C., Oliver K.,
RA O'Neil S., Pearson D., Quail M.A., Rabbinowitsch E., Rutherford K.M.,
RA Rutter S., Saunders D., Seeger K., Sharp S., Skelton J., Simmonds M.N.,
RA Squares R., Squares S., Stevens K., Taylor K., Taylor R.G., Tivey A.,
RA Walsh S.V., Warren T., Whitehead S., Woodward J.R., Volckaert G., Aert R.,
RA Robben J., Grymonprez B., Weltjens I., Vanstreels E., Rieger M.,
RA Schaefer M., Mueller-Auer S., Gabel C., Fuchs M., Duesterhoeft A.,
RA Fritzc C., Holzer E., Moestl D., Hilbert H., Borzym K., Langer I., Beck A.,
RA Lehrach H., Reinhardt R., Pohl T.M., Eger P., Zimmermann W., Wedler H.,
RA Wambutt R., Purnelle B., Goffeau A., Cadieu E., Dreano S., Gloux S.,
RA Lelaure V., Mottier S., Galibert F., Aves S.J., Xiang Z., Hunt C.,
RA Moore K., Hurst S.M., Lucas M., Rochet M., Gaillardin C., Tallada V.A.,
RA Garzon A., Thode G., Daga R.R., Cruzado L., Jimenez J., Sanchez M.,
RA del Rey F., Benito J., Dominguez A., Revuelta J.L., Moreno S.,
RA Armstrong J., Forsburg S.L., Cerutti L., Lowe T., McCombie W.R.,
RA Paulsen I., Potashkin J., Shpakovski G.V., Ussery D., Barrell B.G.,
RA Nurse P.;
RT "The genome sequence of Schizosaccharomyces pombe.";
RL Nature 415:871-880(2002).
RN [2]
RP SUBCELLULAR LOCATION [LARGE SCALE ANALYSIS].
RX PubMed=16823372; DOI=10.1038/nbt1222;
RA Matsuyama A., Arai R., Yashiroda Y., Shirai A., Kamata A., Sekido S.,
RA Kobayashi Y., Hashimoto A., Hamamoto M., Hiraoka Y., Horinouchi S.,
RA Yoshida M.;
RT "ORFeome cloning and global analysis of protein localization in the fission
RT yeast Schizosaccharomyces pombe.";
RL Nat. Biotechnol. 24:841-847(2006).
CC -!- FUNCTION: Regulatory subunit of the poly(A)-nuclease (PAN)
CC deadenylation complex, one of two cytoplasmic mRNA deadenylases
CC involved in mRNA turnover. PAN specifically shortens poly(A) tails of
CC RNA and the activity is stimulated by poly(A)-binding protein pab1. PAN
CC deadenylation is followed by rapid degradation of the shortened mRNA
CC tails by the CCR4-NOT complex. Deadenylated mRNAs are then degraded by
CC two alternative mechanisms, namely exosome-mediated 3'-5'
CC exonucleolytic degradation, or deadenylation-dependent mRNA decaping
CC and subsequent 5'-3' exonucleolytic degradation by xrn1. May also be
CC involved in post-transcriptional maturation of mRNA poly(A) tails.
CC ppk26/pan3 acts as a positive regulator for PAN activity, recruiting
CC the catalytic subunit pan2 to mRNA via its interaction with RNA and
CC with pab1. {ECO:0000255|HAMAP-Rule:MF_03181}.
CC -!- SUBUNIT: Homodimer. Forms a heterotrimer with a catalytic subunit pan2
CC to form the poly(A)-nuclease (PAN) deadenylation complex. Interacts
CC (via PAM-2 motif) with poly(A)-binding protein pab1 (via PABC domain),
CC conferring substrate specificity of the enzyme complex.
CC {ECO:0000255|HAMAP-Rule:MF_03181}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03181,
CC ECO:0000269|PubMed:16823372}. Nucleus {ECO:0000269|PubMed:16823372}.
CC -!- DOMAIN: The N-terminal zinc finger binds to poly(A) RNA.
CC {ECO:0000255|HAMAP-Rule:MF_03181}.
CC -!- DOMAIN: Contains a pseudokinase domain. The protein kinase domain is
CC predicted to be catalytically inactive because some of the residues
CC important for catalytic activity are substituted and it lacks the
CC equivalent of the binding site for a peptide substrate. However, it has
CC retained an ATP-binding site and ATP-binding is required for mRNA
CC degradation, stimulating the activity of the PAN2 nuclease in vitro.
CC The nucleotide-binding site is juxtaposed to the RNase active site of
CC pan2 in the complex and may actually bind nucleosides of a poly(A) RNA
CC rather than ATP, feeding the poly(A)-tail to the active site of the
CC deadenylase and thus increasing the efficiency with which this
CC distributive enzyme degrades oligo(A) RNAs. {ECO:0000255|HAMAP-
CC Rule:MF_03181}.
CC -!- DOMAIN: The pseudokinase domain, the coiled-coil (CC), and C-terminal
CC knob domain (CK) form a structural unit (PKC) that forms an extensive
CC high-affinity interaction surface for pan2. {ECO:0000255|HAMAP-
CC Rule:MF_03181}.
CC -!- SIMILARITY: Belongs to the protein kinase superfamily. PAN3 family.
CC {ECO:0000255|HAMAP-Rule:MF_03181}.
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DR EMBL; CU329671; CAB58166.1; -; Genomic_DNA.
DR PIR; T40252; T40252.
DR RefSeq; NP_596134.1; NM_001022052.2.
DR AlphaFoldDB; Q9UST1; -.
DR SMR; Q9UST1; -.
DR BioGRID; 276763; 47.
DR STRING; 284812.Q9UST1; -.
DR iPTMnet; Q9UST1; -.
DR MaxQB; Q9UST1; -.
DR PaxDb; 4896-SPBC336-14c-1; -.
DR EnsemblFungi; SPBC336.14c.1; SPBC336.14c.1:pep; SPBC336.14c.
DR GeneID; 2540231; -.
DR KEGG; spo:SPBC336.14c; -.
DR PomBase; SPBC336.14c; ppk26.
DR VEuPathDB; FungiDB:SPBC336.14c; -.
DR eggNOG; KOG3741; Eukaryota.
DR HOGENOM; CLU_016423_1_0_1; -.
DR InParanoid; Q9UST1; -.
DR OMA; DRAWSEN; -.
DR PhylomeDB; Q9UST1; -.
DR PRO; PR:Q9UST1; -.
DR Proteomes; UP000002485; Chromosome II.
DR GO; GO:0005829; C:cytosol; HDA:PomBase.
DR GO; GO:0005634; C:nucleus; HDA:PomBase.
DR GO; GO:0000932; C:P-body; IBA:GO_Central.
DR GO; GO:0031251; C:PAN complex; ISO:PomBase.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0008143; F:poly(A) binding; IBA:GO_Central.
DR GO; GO:0004672; F:protein kinase activity; IEA:InterPro.
DR GO; GO:0006397; P:mRNA processing; IEA:UniProtKB-KW.
DR GO; GO:0000289; P:nuclear-transcribed mRNA poly(A) tail shortening; ISO:PomBase.
DR Gene3D; 1.10.287.3700; -; 1.
DR Gene3D; 6.10.250.3160; -; 1.
DR Gene3D; 1.10.510.10; Transferase(Phosphotransferase) domain 1; 1.
DR HAMAP; MF_03181; PAN3; 1.
DR InterPro; IPR011009; Kinase-like_dom_sf.
DR InterPro; IPR030844; PAN3.
DR InterPro; IPR041332; Pan3_PK.
DR InterPro; IPR000719; Prot_kinase_dom.
DR InterPro; IPR000571; Znf_CCCH.
DR PANTHER; PTHR12272; DEADENYLATION COMPLEX SUBUNIT PAN3; 1.
DR PANTHER; PTHR12272:SF11; PAN2-PAN3 DEADENYLATION COMPLEX SUBUNIT PAN3; 1.
DR Pfam; PF18101; Pan3_PK; 1.
DR Pfam; PF00069; Pkinase; 1.
DR SMART; SM00220; S_TKc; 1.
DR SUPFAM; SSF56112; Protein kinase-like (PK-like); 1.
DR PROSITE; PS50011; PROTEIN_KINASE_DOM; 1.
DR PROSITE; PS50103; ZF_C3H1; 1.
PE 3: Inferred from homology;
KW ATP-binding; Coiled coil; Cytoplasm; Metal-binding; mRNA processing;
KW Nucleotide-binding; Nucleus; Reference proteome; Zinc; Zinc-finger.
FT CHAIN 1..589
FT /note="PAN2-PAN3 deadenylation complex subunit pan3"
FT /id="PRO_0000256831"
FT ZN_FING 34..63
FT /note="C3H1-type"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03181"
FT REGION 1..32
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 201..457
FT /note="Pseudokinase domain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03181"
FT REGION 497..589
FT /note="Knob domain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03181"
FT COILED 458..496
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03181"
FT MOTIF 74..94
FT /note="PABPC-interacting motif-2 (PAM-2)"
FT /evidence="ECO:0000305"
FT COMPBIAS 1..22
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 255
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03181"
FT BINDING 302..309
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03181"
SQ SEQUENCE 589 AA; 67267 MW; A9835E7FA027DB18 CRC64;
MSVRKNSPAS PKPTSRSRES SRSPSVTDLK DHSKAKRTLC RNILLYGSCK HSENGCAFRH
DGPFIPSSEN LEQYSVKKKL NAASASFQPV RALPVKAAGA AVFVPKSQEK SLFLSRERTP
VALSPGSHAI NPYNNASMLV NEPFHDDSGV YYTRQNQFKP TLYNLYNPQP SPMPTLLPYE
RTVNGLFIDD TTRERIERKS EASRQTISAL PSIISSYTSL APLNTKLYRY KEQIGFSSWT
YKCTSSIDGN AYVLKRLQDC SINIDTSTVD KLKNVFHPNI VPFHSAFHTD TFHDSSLLLI
YDFYPCTTTL GELYLNNSKN SVKLEENRKI PERELWNYFF QLTIALSYLH KSGFACNKLT
PSRILVDQTE RIRISGCADY ELVVSNKPPL EERKKQDFVD LGVVIANLAT GRTDMDMSSA
ARAIYSTYSR EFYKAVLYFV SEVPEDKNLE LFLQNHIESF FPIMSSPYVE CEKMERKISD
AFQHGRFFNI LCKIMFIIDN NRASREYPIA REKEISLIYL LRDYLFHQID EDECPVIDLY
QVLNRLGKLD AGINQAIALI SRDELDCVSV SYGELKAWLD NVYEMEINS
//
