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Reviewed, UniProtKB/Swiss-Prot P11940 (PABP1_HUMAN)

Last modified July 7, 2009. Version 128. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (4) | Third-party data | Customize display text xml rdf/xml gff fasta
Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Binary interactions · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

Names and origin

Protein namesRecommended name:
    Polyadenylate-binding protein 1
      Short name=Poly(A)-binding protein 1
      Short name=PABP 1
Gene names
Name: PABPC1
Synonyms: PAB1, PABP1, PABPC2
OrganismHomo sapiens (Human) [Complete proteome]
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length636 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is not processed.
Protein existenceEvidence at protein level.

General annotation (Comments)

Function

Binds the poly(A) tail of mRNA. May be involved in cytoplasmic regulatory processes of mRNA metabolism such as pre-mRNA splicing. Its function in translational initiation regulation can either be enhanced by PAIP1 or repressed by PAIP2. Can probably bind to cytoplasmic RNA sequences other than poly(A) in vivo. May be involved in translationally coupled mRNA turnover. Implicated with other RNA-binding proteins in the cytoplasmic deadenylation/translational and decay interplay of the FOS mRNA mediated by the major coding-region determinant of instability (mCRD) domain. Ref.13

Subunit structure

Component of a multi subunit autoregulatory ribonucleoprotein complex (ARC), at least composed of IGF2BP1, PABPC1 and CSDE1. Interacts with IGF2BP1. Part of a complex associated with the FOS mCRD domain and consisting of HNRPD, SYNCRIP, PAIP1 and CSDE1/UNR. Interacts with the PABPC1-interacting motif-1 (PAM1) and -2 (PAM2) of PAIP1 and PAIP2. Interacts with PAIP1 with a 1:1 stoichiometry and with PAIP2 with a 1:2 stoichiometry. The interaction with CSDE1 is direct and RNA-independent. Found in a mRNP complex with YBX2. Interacts with PAPD4/GLD2. Identified in the spliceosome C complex, at least composed of AQR, ASCC3L1, C19orf29, CDC40, CDC5L, CRNKL1, DDX23, DDX41, DDX48, DDX5, DGCR14, DHX35, DHX38, DHX8, EFTUD2, FRG1, GPATC1, HNRPA1, HNRPA2B1, HNRPA3, HNRPC, HNRPF, HNRPH1, HNRPK, HNRPM, HNRPR, HNRPU, KIAA1160, KIAA1604, LSM2, LSM3, MAGOH, MORG1, PABPC1, PLRG1, PNN, PPIE, PPIL1, PPIL3, PPWD1, PRPF19, PRPF4B, PRPF6, PRPF8, RALY, RBM22, RBM8A, RBMX, SART1, SF3A1, SF3A2, SF3A3, SF3B1, SF3B2, SF3B3, SFRS1, SKIV2L2, SNRPA1, SNRPB, SNRPB2, SNRPD1, SNRPD2, SNRPD3, SNRPE, SNRPF, SNRPG, SNW1, SRRM1, SRRM2, SYF2, SYNCRIP, TFIP11, THOC4, U2AF1, WDR57, XAB2 and ZCCHC8. Interacts with PIWIL1 By similarity. Interacts with NFX1.

Subcellular location

Cytoplasm. Nucleus. Note: Shuttles between the cytoplasm and the nucleus. Relocalizes to the nucleus upon rotavirus A infection. Ref.7 Ref.8 Ref.19

Tissue specificity

Ubiquitous.

Domain

The RNA-binding domains RRM1 and RRM2 and the C-terminus (last 138 amino acids) regions interact with the PABPC1-interacting motif-1 (PAM1) and -2 (PAM2) of PAIP1, respectively.

The RNA-binding domains RRM2 and RRM3 and the C-terminus (last 138 amino acids) regions interact with the PABPC1-interacting motif-1 (PAM1) and -2 (PAM2) of PAIP2, respectively.

Post-translational modification

Methylated by CARM1. Ref.5 Ref.6 Ref.15 Ref.24

Arg-493 is dimethylated, probably to asymmetric dimethylarginine. Ref.5 Ref.6 Ref.15 Ref.24

Sequence similarities

Belongs to the polyadenylate-binding protein type-1 family.

Contains 1 PABC domain.

Contains 4 RRM (RNA recognition motif) domains.

Caution

Was originally (Ref.4) termed polyadenylate binding protein II.

Alternative products

This entry describes 2 isoforms produced by alternative splicing. [Align] [Select]
Isoform 1 (identifier: P11940-1)

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.
Isoform 2 (identifier: P11940-2)

The sequence of this isoform differs from the canonical sequence as follows:
     447-535: Missing.
Note: No experimental confirmation available.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 636636Polyadenylate-binding protein 1
PRO_0000081698

Regions

Domain11 – 8979RRM 1
Domain99 – 17577RRM 2
Domain191 – 26878RRM 3
Domain294 – 37077RRM 4
Domain542 – 61978PABC
Region166 – 289124CSDE1-binding
Compositional bias495 – 5017Poly-Ala

Amino acid modifications

Modified residue961Phosphoserine Ref.20
Modified residue1161Phosphotyrosine By similarity
Modified residue2991N6-methyllysine Ref.6
Modified residue3151Phosphoserine Ref.20
Modified residue3421Phosphoserine Ref.20
Modified residue3641Phosphotyrosine Ref.16
Modified residue4551Omega-N-methylated arginine; by CARM1; partial Probable
Modified residue4601Omega-N-methylated arginine; by CARM1; partial Probable
Modified residue4931Dimethylated arginine; alternate Ref.5 Ref.6 Ref.15
Modified residue4931Omega-N-methylarginine; alternate Ref.5 Ref.6 Ref.15

Natural variations

Alternative sequence447 – 53589Missing in isoform 2.
VSP_009846

Experimental info

Mutagenesis4551R → A: Greatly reduces methylation by CARM1 (in vitro); when associated with A-460. Ref.24
Mutagenesis4601R → A: Greatly reduces methylation by CARM1 (in vitro); when associated with A-455. Ref.24
Sequence conflict211 – 2133Missing Ref.1
Sequence conflict4101M → I in CAA88401. Ref.4
Sequence conflict4281I → V in CAA68428. Ref.1

Secondary structure

............................................. 636
Helix Strand Turn

Details...

Sequences

Sequence LengthMass (Da)Tools
Isoform 1 [UniParc].

Last modified July 15, 1998. Version 2.
Checksum: 2EB1B02A346132EE

FASTA63670,671
        10         20         30         40         50         60 
MNPSAPSYPM ASLYVGDLHP DVTEAMLYEK FSPAGPILSI RVCRDMITRR SLGYAYVNFQ 

        70         80         90        100        110        120 
QPADAERALD TMNFDVIKGK PVRIMWSQRD PSLRKSGVGN IFIKNLDKSI DNKALYDTFS 

       130        140        150        160        170        180 
AFGNILSCKV VCDENGSKGY GFVHFETQEA AERAIEKMNG MLLNDRKVFV GRFKSRKERE 

       190        200        210        220        230        240 
AELGARAKEF TNVYIKNFGE DMDDERLKDL FGKFGPALSV KVMTDESGKS KGFGFVSFER 

       250        260        270        280        290        300 
HEDAQKAVDE MNGKELNGKQ IYVGRAQKKV ERQTELKRKF EQMKQDRITR YQGVNLYVKN 

       310        320        330        340        350        360 
LDDGIDDERL RKEFSPFGTI TSAKVMMEGG RSKGFGFVCF SSPEEATKAV TEMNGRIVAT 

       370        380        390        400        410        420 
KPLYVALAQR KEERQAHLTN QYMQRMASVR AVPNPVINPY QPAPPSGYFM AAIPQTQNRA 

       430        440        450        460        470        480 
AYYPPSQIAQ LRPSPRWTAQ GARPHPFQNM PGAIRPAAPR PPFSTMRPAS SQVPRVMSTQ 

       490        500        510        520        530        540 
RVANTSTQTM GPRPAAAAAA ATPAVRTVPQ YKYAAGVRNP QQHLNAQPQV TMQQPAVHVQ 

       550        560        570        580        590        600 
GQEPLTASML ASAPPQEQKQ MLGERLFPLI QAMHPTLAGK ITGMLLEIDN SELLHMLESP 

       610        620        630 
ESLRSKVDEA VAVLQAHQAK EAAQKAVNSA TGVPTV 

« Hide

Isoform 2.

Checksum: 8088B4F7DFABAFB8
Show »

FASTA54761,181

References

« Hide 'large scale' references
[1]"Human mRNA polyadenylate binding protein: evolutionary conservation of a nucleic acid binding motif."
Grange T., de Sa C.M., Oddos J., Pictet R.
Nucleic Acids Res. 15:4771-4787(1987) [PubMed: 2885805] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[2]"The human poly(A)-binding protein (PABP) gene: structural and functional analysis."
Hornstein E., Abramzon-Talianker A., Wiesel I., Meyuhas O.
Submitted (SEP-1996) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
Tissue: Lung.
[3]"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: 15489334] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1).
Tissue: Lung, Muscle and Testis.
[4]"Nucleotide sequence of a partial cDNA encoding a novel human polyadenylate-binding protein."
Murphy E.P., McKenna N.J., Headon D.R.
Submitted (FEB-1995) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 26-636 (ISOFORM 2).
[5]Bienvenut W.V., Zebisch A., Lilla S., von Kriegsheim A., Lempens A., Kolch W.
Submitted (DEC-2008) to UniProtKB
Cited for: PROTEIN SEQUENCE OF 31-41; 51-78; 84-89; 96-104; 158-166; 189-196; 214-221; 232-240; 291-309; 312-324; 357-370; 375-385; 482-506; 566-580 AND 605-620, METHYLATION AT ARG-493, MASS SPECTROMETRY.
Tissue: Colon carcinoma and Ovarian carcinoma.
[6]Bienvenut W.V., Waridel P., Quadroni M.
Submitted (MAR-2009) to UniProtKB
Cited for: PROTEIN SEQUENCE OF 31-41; 51-78; 84-89; 96-104; 114-129; 139-153; 158-166; 187-208; 214-221; 232-240; 291-324; 334-348; 357-370; 375-385; 482-506; 519-559; 566-620 AND 626-636, METHYLATION AT LYS-299 AND ARG-493, MASS SPECTROMETRY.
Tissue: Cervix carcinoma.
[7]"The mRNA poly(A)-binding protein: localization, abundance, and RNA-binding specificity."
Goerlach M., Burd C.G., Dreyfuss G.
Exp. Cell Res. 211:400-407(1994) [PubMed: 7908267] [Abstract]
Cited for: PARTIAL NUCLEOTIDE SEQUENCE [MRNA], SUBCELLULAR LOCATION.
[8]"The human poly(A)-binding protein 1 shuttles between the nucleus and the cytoplasm."
Afonina E., Stauber R., Pavlakis G.N.
J. Biol. Chem. 273:13015-13021(1998) [PubMed: 9582337] [Abstract]
Cited for: SUBCELLULAR LOCATION.
[9]"Interaction of polyadenylate-binding protein with the eIF4G homologue PAIP enhances translation."
Craig A.W.B., Haghighat A., Yu A.T.K., Sonenberg N.
Nature 392:520-523(1998) [PubMed: 9548260] [Abstract]
Cited for: INTERACTION WITH PAIP1.
[10]"Translational repression by a novel partner of human poly(A) binding protein, Paip2."
Khaleghpour K., Svitkin Y.V., Craig A.W.B., DeMaria C.T., Deo R.C., Burley S.K., Sonenberg N.
Mol. Cell 7:205-216(2001) [PubMed: 11172725] [Abstract]
Cited for: INTERACTION WITH PAIP2.
[11]"Dual interactions of the translational repressor Paip2 with poly(A) binding protein."
Khaleghpour K., Kahvejian A., De Crescenzo G., Roy G., Svitkin Y.V., Imataka H., O'Connor-McCourt M., Sonenberg N.
Mol. Cell. Biol. 21:5200-5213(2001) [PubMed: 11438674] [Abstract]
Cited for: INTERACTION WITH PAIP2.
[12]"Paip1 interacts with poly(A) binding protein through two independent binding motifs."
Roy G., De Crescenzo G., Khaleghpour K., Kahvejian A., O'Connor-McCourt M., Sonenberg N.
Mol. Cell. Biol. 22:3769-3782(2002) [PubMed: 11997512] [Abstract]
Cited for: INTERACTION WITH PAIP1.
[13]"A mechanism for translationally coupled mRNA turnover: interaction between the poly(A) tail and a c-fos RNA coding determinant via a protein complex."
Grosset C., Chen C.-Y.A., Xu N., Sonenberg N., Jacquemin-Sablon H., Shyu A.-B.
Cell 103:29-40(2000) [PubMed: 11051545] [Abstract]
Cited for: FUNCTION IN TRANSLATIONALLY COUPLED MRNA TURNOVER, IDENTIFICATION IN A COMPLEX WITH HNRPD; SYNCRIP; PAIP1 AND CSDE1.
[14]"Purification and characterization of native spliceosomes suitable for three-dimensional structural analysis."
Jurica M.S., Licklider L.J., Gygi S.P., Grigorieff N., Moore M.J.
RNA 8:426-439(2002) [PubMed: 11991638] [Abstract]
Cited for: IDENTIFICATION BY MASS SPECTROMETRY, IDENTIFICATION IN THE SPICEOSOMAL C COMPLEX.
[15]"Identifying and quantifying in vivo methylation sites by heavy methyl SILAC."
Ong S.E., Mittler G., Mann M.
Nat. Methods 1:119-126(2004) [PubMed: 15782174] [Abstract]
Cited for: METHYLATION [LARGE SCALE ANALYSIS] AT ARG-493, MASS SPECTROMETRY.
[16]"Immunoaffinity profiling of tyrosine phosphorylation in cancer cells."
Rush J., Moritz A., Lee K.A., Guo A., Goss V.L., Spek E.J., Zhang H., Zha X.-M., Polakiewicz R.D., Comb M.J.
Nat. Biotechnol. 23:94-101(2005) [PubMed: 15592455] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT TYR-364, MASS SPECTROMETRY.
[17]"The autoregulatory translational control element of poly(A)-binding protein mRNA forms a heteromeric ribonucleoprotein complex."
Patel G.P., Ma S., Bag J.
Nucleic Acids Res. 33:7074-7089(2005) [PubMed: 16356927] [Abstract]
Cited for: IDENTIFICATION IN A MRNP COMPLEX WITH IGF2BP1 AND CSDE1.
[18]"NFX1-123 and poly(A) binding proteins synergistically augment activation of telomerase in human papillomavirus type 16 E6-expressing cells."
Katzenellenbogen R.A., Egelkrout E.M., Vliet-Gregg P., Gewin L.C., Gafken P.R., Galloway D.A.
J. Virol. 81:3786-3796(2007) [PubMed: 17267499] [Abstract]
Cited for: INTERACTION WITH NFX1.
[19]"Nuclear localization of cytoplasmic poly(A)-binding protein upon rotavirus infection involves the interaction of NSP3 with eIF4G and RoXaN."
Harb M., Becker M.M., Vitour D., Baron C.H., Vende P., Brown S.C., Bolte S., Arold S.T., Poncet D.
J. Virol. 82:11283-11293(2008) [PubMed: 18799579] [Abstract]
Cited for: SUBCELLULAR LOCATION.
[20]"A quantitative atlas of mitotic phosphorylation."
Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E., Elledge S.J., Gygi S.P.
Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008) [PubMed: 18669648] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-96; SER-315 AND SER-342, MASS SPECTROMETRY.
[21]Colinge J., Superti-Furga G., Bennett K.L.
Submitted (OCT-2008) to UniProtKB
Cited for: IDENTIFICATION [LARGE SCALE ANALYSIS], MASS SPECTROMETRY.
[22]"Recognition of polyadenylate RNA by the poly(A)-binding protein."
Deo R.C., Bonanno J.B., Sonenberg N., Burley S.K.
Cell 98:835-845(1999) [PubMed: 10499800] [Abstract]
Cited for: X-RAY CRYSTALLOGRAPHY (2.6 ANGSTROMS) OF 1-190.
[23]"UNR, a new partner of poly(A)-binding protein, plays a key role in translationally coupled mRNA turnover mediated by the c-fos major coding-region determinant."
Chang T.-C., Yamashita A., Chen C.-Y.A., Yamashita Y., Zhu W., Durdan S., Kahvejian A., Sonenberg N., Shyu A.-B.
Genes Dev. 18:2010-2023(2004) [PubMed: 15314026] [Abstract]
Cited for: INTERACTION WITH CSDE1.
[24]"PABP1 identified as an arginine methyltransferase substrate using high-density protein arrays."
Lee J., Bedford M.T.
EMBO Rep. 3:268-273(2002) [PubMed: 11850402] [Abstract]
Cited for: METHYLATION AT ARG-455 AND ARG-460, MUTAGENESIS OF ARG-455 AND ARG-460.
+Additional computationally mapped references.

Cross-references

Sequence databases

Y00345 mRNA. Translation: CAA68428.1.
U68104 expand/collapse EMBL AC list , U68093, U68094, U68095, U68097, U68098, U68099, U68100, U68101, U68102, U68103 Genomic DNA. Translation: AAD08718.1.
BC015958 mRNA. Translation: AAH15958.1.
BC023520 mRNA. Translation: AAH23520.1.
BC041863 mRNA. Translation: AAH41863.1.
Z48501 mRNA. Translation: CAA88401.1.
IPIIPI00008524.
IPI00410017.
PIRDNHUPA. A93668.
S52491.
RefSeqNP_002559.2.
UniGeneHs.387804

3D structure databases

EntryMethodResolution (Å)ChainPositionsPDBsum
1CVJX-ray2.60A/B/C/D/E/F/G/H1-190[»]
1G9LNMR-A498-636[»]
1JGNNMR-A544-636[»]
1JH4NMR-A544-636[»]
SMRP11940. Positions 286-376.
ModBaseSearch...

Protein-protein interaction databases

IntActP11940. 24 interactions.

PTM databases

PhosphoSiteP11940.

2-D gel databases

Aarhus/Ghent-2DPAGE612. NEPHGE.

Proteomic databases

PRIDEP11940.

Genome annotation databases

EnsemblENSG00000070756. Homo sapiens. [Contig view]
GeneID26986.
KEGGhsa:26986.
UCSCuc003yjs.1. human.

Organism-specific databases

GeneCardsGC08M101784.
H-InvDBHIX0007688.
HIX0056425.
HIX0077138.
HGNCHGNC:8554. PABPC1.
HPACAB011536.
MIM604679. gene.
PharmGKBPA32880.
GenAtlasSearch...

Phylogenomic databases

HOGENOMP11940.
HOVERGENP11940.
OMAP11940. TITSAKX.

Enzyme and pathway databases

ReactomeREACT_17015. Metabolism of proteins.
REACT_1762. 3' -UTR-mediated translational regulation.
REACT_71. Gene Expression.

Gene expression databases

ArrayExpressP11940.
BgeeP11940.
CleanExHS_PABPC1.
GermOnlineENSG00000070756. Homo sapiens.

Family and domain databases

InterProIPR012677. a_b_plait_nuc_bd.
IPR006515. PABP_1234.
IPR002004. PABP_HYD.
IPR000504. RRM_RNP1.
[Graphical view]
Gene3DG3DSA:3.30.70.330. a_b_plait_nuc_bd. 4 hits.
G3DSA:1.10.1900.10. PABP_HYD. 1 hit.
PfamPF00658. PABP. 1 hit.
PF00076. RRM_1. 4 hits.
[Graphical view]
SMARTSM00517. PolyA. 1 hit.
SM00360. RRM. 4 hits.
[Graphical view]
TIGRFAMsTIGR01628. PABP-1234. 1 hit.
PROSITEPS51309. PABC. 1 hit.
PS50102. RRM. 4 hits.
[Graphical view]
ProtoNetSearch...

Other Resources

NextBio49454.
PMAP-CutDBP11940.
SOURCESearch...

Entry information

Entry namePABP1_HUMAN
AccessionPrimary (citable) accession number: P11940
Secondary accession number(s): Q15097, Q93004
Entry history
Integrated into UniProtKB/Swiss-Prot: October 1, 1989
Last sequence update: July 15, 1998
Last modified: July 7, 2009
This is version 128 of the entry and version 2 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation projectHPI (Human Proteome Initiative)

Relevant documents

Human chromosome 8

Human chromosome 8: entries, gene names and cross-references to MIM

MIM cross-references

Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot

PDB cross-references

Index of Protein Data Bank (PDB) cross-references

SIMILARITY comments

Index of protein domains and families

Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Binary interactions · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents