Incidental Mutation 'D4043:Polr1a'
ID255
Institutional Source Beutler Lab
Gene Symbol Polr1a
Ensembl Gene ENSMUSG00000049553
Gene Namepolymerase (RNA) I polypeptide A
SynonymsRPA194, 3010014K16Rik, 194kDa, mRPA1, Rpo1-4
Accession Numbers

Genbank: NM_009088; MGI: 1096397

Is this an essential gene? Probably essential (E-score: 0.967) question?
Stock #D4043 (G3) of strain 483
Quality Score
Status Validated
Chromosome6
Chromosomal Location71909053-71984935 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) G to A at 71941417 bp
ZygosityHeterozygous
Amino Acid Change Cysteine to Tyrosine at position 653 (C653Y)
Ref Sequence ENSEMBL: ENSMUSP00000060858 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000055296] [ENSMUST00000206556]
Predicted Effect possibly damaging
Transcript: ENSMUST00000055296
AA Change: C653Y

PolyPhen 2 Score 0.923 (Sensitivity: 0.81; Specificity: 0.94)
SMART Domains Protein: ENSMUSP00000060858
Gene: ENSMUSG00000049553
AA Change: C653Y

DomainStartEndE-ValueType
RPOLA_N 302 649 8.97e-137 SMART
Pfam:RNA_pol_Rpb1_4 846 958 1.3e-26 PFAM
Pfam:RNA_pol_Rpb1_5 965 1669 7e-103 PFAM
low complexity region 1698 1708 N/A INTRINSIC
Predicted Effect noncoding transcript
Transcript: ENSMUST00000205942
Predicted Effect probably benign
Transcript: ENSMUST00000206556
Predicted Effect noncoding transcript
Transcript: ENSMUST00000206753
Meta Mutation Damage Score 0.35 question?
Coding Region Coverage
  • 1x: 88.8%
  • 3x: 72.5%
Validation Efficiency 88% (220/249)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] The protein encoded by this gene is the largest subunit of the RNA polymerase I complex. The encoded protein represents the catalytic subunit of the complex, which transcribes DNA into ribosomal RNA precursors. Defects in this gene are a cause of the Cincinnati type of acrofacial dysostosis. [provided by RefSeq, May 2016]
Allele List at MGI

All alleles(18) : Gene trapped(18)

Other mutations in this stock
Total: 25 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1110020G09Rik T A 15: 9,103,385 probably benign Homo
1700029J07Rik A G 8: 45,956,403 V293A probably damaging Het
Adam29 A T 8: 55,872,461 C319* probably null Het
Adgrg1 T C 8: 95,005,229 probably null Homo
Ago3 A T 4: 126,351,003 V630E probably damaging Het
Armc8 G T 9: 99,483,976 N628K probably benign Het
Chd7 A G 4: 8,862,650 D2579G probably damaging Het
Duox1 G A 2: 122,344,795 C1358Y probably benign Het
Fam208a A G 14: 27,471,992 I1050V probably benign Het
Ftsj3 C A 11: 106,254,808 M66I possibly damaging Homo
Iqub C T 6: 24,505,751 E53K possibly damaging Het
Kirrel T A 3: 87,083,203 T771S probably benign Het
Lrrc66 A T 5: 73,607,526 S725T probably benign Het
Mael T C 1: 166,236,886 I104M probably benign Homo
Mkks C T 2: 136,874,610 V457I probably benign Het
Npas1 T C 7: 16,463,244 probably null Het
Ocrl T C X: 47,936,323 V359A probably benign Homo
Olfr1065 G A 2: 86,445,220 T254M probably damaging Het
Pde6b C T 5: 108,425,356 R531* probably null Het
Rbm26 A G 14: 105,152,540 V216A possibly damaging Het
Rin2 C A 2: 145,822,363 H52Q possibly damaging Het
Ssc5d C T 7: 4,943,983 T1112I possibly damaging Het
Sv2c C T 13: 96,088,481 V107M probably benign Het
Tulp3 G A 6: 128,324,150 S366L probably benign Het
Zfp831 T A 2: 174,645,266 V578E probably benign Homo
Other mutations in Polr1a
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01363:Polr1a APN 6 71948486 missense probably benign 0.32
IGL01834:Polr1a APN 6 71948462 missense probably benign
IGL01902:Polr1a APN 6 71963748 missense probably damaging 1.00
IGL02101:Polr1a APN 6 71950802 missense probably benign 0.00
IGL02325:Polr1a APN 6 71920657 missense probably benign 0.38
IGL02398:Polr1a APN 6 71936556 splice site probably benign
IGL02528:Polr1a APN 6 71964717 missense probably benign
IGL02555:Polr1a APN 6 71920457 missense probably damaging 0.98
IGL02613:Polr1a APN 6 71967320 missense probably damaging 1.00
IGL02693:Polr1a APN 6 71963846 splice site probably benign
IGL02892:Polr1a APN 6 71931696 missense possibly damaging 0.70
IGL03059:Polr1a APN 6 71936512 missense probably benign
IGL03174:Polr1a APN 6 71977347 missense possibly damaging 0.82
R0092:Polr1a UTSW 6 71967455 splice site probably benign
R0217:Polr1a UTSW 6 71963703 missense probably benign 0.19
R0267:Polr1a UTSW 6 71974139 missense probably damaging 0.99
R0329:Polr1a UTSW 6 71966416 missense possibly damaging 0.96
R0330:Polr1a UTSW 6 71966416 missense possibly damaging 0.96
R0352:Polr1a UTSW 6 71920763 splice site probably benign
R0411:Polr1a UTSW 6 71978421 missense possibly damaging 0.95
R0446:Polr1a UTSW 6 71950664 critical splice donor site probably null
R0846:Polr1a UTSW 6 71924643 missense probably damaging 1.00
R1035:Polr1a UTSW 6 71967916 missense probably benign
R1294:Polr1a UTSW 6 71912902 missense probably damaging 0.99
R1460:Polr1a UTSW 6 71941384 missense probably damaging 0.99
R1657:Polr1a UTSW 6 71941535 missense probably damaging 1.00
R1846:Polr1a UTSW 6 71976188 missense probably damaging 0.98
R1862:Polr1a UTSW 6 71909203 missense probably damaging 0.96
R1865:Polr1a UTSW 6 71966524 missense probably damaging 1.00
R1903:Polr1a UTSW 6 71967914 missense probably benign 0.02
R1937:Polr1a UTSW 6 71936552 critical splice donor site probably null
R2063:Polr1a UTSW 6 71936285 splice site probably null
R2071:Polr1a UTSW 6 71976074 missense possibly damaging 0.64
R2084:Polr1a UTSW 6 71950809 missense possibly damaging 0.69
R2377:Polr1a UTSW 6 71972826 critical splice donor site probably null
R2410:Polr1a UTSW 6 71974882 missense probably benign
R3001:Polr1a UTSW 6 71965644 missense probably benign 0.02
R3001:Polr1a UTSW 6 71913016 missense probably benign 0.01
R3002:Polr1a UTSW 6 71913016 missense probably benign 0.01
R3002:Polr1a UTSW 6 71965644 missense probably benign 0.02
R3924:Polr1a UTSW 6 71929450 missense probably benign 0.00
R4105:Polr1a UTSW 6 71976191 missense probably damaging 0.98
R4125:Polr1a UTSW 6 71965706 missense probably benign 0.00
R4271:Polr1a UTSW 6 71953022 missense probably benign 0.02
R4440:Polr1a UTSW 6 71950848 missense probably damaging 0.98
R4667:Polr1a UTSW 6 71917821 missense probably benign 0.30
R4769:Polr1a UTSW 6 71950868 missense probably benign 0.01
R4801:Polr1a UTSW 6 71976070 missense probably benign 0.00
R4802:Polr1a UTSW 6 71976070 missense probably benign 0.00
R4828:Polr1a UTSW 6 71966401 missense possibly damaging 0.93
R4911:Polr1a UTSW 6 71909229 missense possibly damaging 0.67
R5071:Polr1a UTSW 6 71931709 missense possibly damaging 0.71
R5165:Polr1a UTSW 6 71967925 missense probably damaging 1.00
R5223:Polr1a UTSW 6 71967907 missense possibly damaging 0.73
R5239:Polr1a UTSW 6 71913037 missense probably damaging 1.00
R5546:Polr1a UTSW 6 71929366 missense possibly damaging 0.64
R5599:Polr1a UTSW 6 71967362 missense possibly damaging 0.95
R5696:Polr1a UTSW 6 71929426 missense probably benign 0.05
R5850:Polr1a UTSW 6 71926683 missense probably benign 0.00
R6274:Polr1a UTSW 6 71954890 intron probably null
R6526:Polr1a UTSW 6 71929443 missense possibly damaging 0.89
R6578:Polr1a UTSW 6 71976041 missense possibly damaging 0.93
R6660:Polr1a UTSW 6 71967374 missense probably damaging 0.98
R6892:Polr1a UTSW 6 71964712 missense possibly damaging 0.72
Nature of Mutation
DNA sequencing using the SOLiD technique identified a G to A transition at position 2068 of the Polr1a transcript in exon 14 of 34 total exons. Two transcripts of the Polr1a gene are displayed on Ensembl. The mutated nucleotide causes a cysteine to tyrosine substitution at amino acid 653 of the encoded protein. The mutation has been confirmed by DNA sequencing using the Sanger method (Figure 1).
Protein Function and Prediction
The Polr1a gene encodes a 1717 amino acid catalytic core of RNA polymerase I, which synthesizes ribosomal RNA precursors. This protein forms the polymerase active center together with the second largest subunit. A bridging helix at residues 968-980 is thought to be critical for RNA polymerase translocation along the RNA (Uniprot O35134).   
 
The C653Y change is predicted to be probably damaging by the PolyPhen program.
Posted On2010-08-09