Mutagenetix > Incidental Mutation

Incidental Mutation 'D4043:Polr1a'

255

Institutional Source

Beutler Lab

Gene Symbol

Polr1a

Ensembl Gene

ENSMUSG00000049553

Gene Name

polymerase (RNA) I polypeptide A

Synonyms

2900087K15Rik, 3010014K16Rik, 194kDa, mRPA1, Rpo1-4, RPA194

Accession Numbers

Essential gene?

Essential (E-score: 1.000) question?

Stock #

D4043 (G3) of strain 483

Quality Score

Status

Validated

Chromosome

Chromosomal Location

71886037-71956419 bp(+) (GRCm39)

Type of Mutation

missense

DNA Base Change (assembly)

G to A at 71918401 bp (GRCm39)

Zygosity

Heterozygous

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]

AlphaFold

O35134

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

Domain	Start	End	E-Value	Type
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

0.2911

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
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
Adam29	A	T	8: 56,325,496 (GRCm39)	C319*	probably null	Het
Adgrg1	T	C	8: 95,731,857 (GRCm39)		probably null	Homo
Ago3	A	T	4: 126,244,796 (GRCm39)	V630E	probably damaging	Het
Armc8	G	T	9: 99,366,029 (GRCm39)	N628K	probably benign	Het
Cfap96	A	G	8: 46,409,440 (GRCm39)	V293A	probably damaging	Het
Chd7	A	G	4: 8,862,650 (GRCm39)	D2579G	probably damaging	Het
Duox1	G	A	2: 122,175,276 (GRCm39)	C1358Y	probably benign	Het
Ftsj3	C	A	11: 106,145,634 (GRCm39)	M66I	possibly damaging	Homo
Iqub	C	T	6: 24,505,750 (GRCm39)	E53K	possibly damaging	Het
Kirrel1	T	A	3: 86,990,510 (GRCm39)	T771S	probably benign	Het
Lrrc66	A	T	5: 73,764,869 (GRCm39)	S725T	probably benign	Het
Mael	T	C	1: 166,064,455 (GRCm39)	I104M	probably benign	Homo
Mkks	C	T	2: 136,716,530 (GRCm39)	V457I	probably benign	Het
Nadk2	T	A	15: 9,103,473 (GRCm39)		probably benign	Homo
Npas1	T	C	7: 16,197,169 (GRCm39)		probably null	Het
Ocrl	T	C	X: 47,025,200 (GRCm39)	V359A	probably benign	Homo
Or8k27	G	A	2: 86,275,564 (GRCm39)	T254M	probably damaging	Het
Pde6b	C	T	5: 108,573,222 (GRCm39)	R531*	probably null	Het
Rbm26	A	G	14: 105,389,976 (GRCm39)	V216A	possibly damaging	Het
Rin2	C	A	2: 145,664,283 (GRCm39)	H52Q	possibly damaging	Het
Ssc5d	C	T	7: 4,946,982 (GRCm39)	T1112I	possibly damaging	Het
Sv2c	C	T	13: 96,224,989 (GRCm39)	V107M	probably benign	Het
Tasor	A	G	14: 27,193,949 (GRCm39)	I1050V	probably benign	Het
Tulp3	G	A	6: 128,301,113 (GRCm39)	S366L	probably benign	Het
Zfp831	T	A	2: 174,487,059 (GRCm39)	V578E	probably benign	Homo

Other mutations in Polr1a

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH Score
IGL01363:Polr1a	APN	6	71,925,470 (GRCm39)	missense	probably benign	0.32
IGL01834:Polr1a	APN	6	71,925,446 (GRCm39)	missense	probably benign
IGL01902:Polr1a	APN	6	71,940,732 (GRCm39)	missense	probably damaging	1.00
IGL02101:Polr1a	APN	6	71,927,786 (GRCm39)	missense	probably benign	0.00
IGL02325:Polr1a	APN	6	71,897,641 (GRCm39)	missense	probably benign	0.38
IGL02398:Polr1a	APN	6	71,913,540 (GRCm39)	splice site	probably benign
IGL02528:Polr1a	APN	6	71,941,701 (GRCm39)	missense	probably benign
IGL02555:Polr1a	APN	6	71,897,441 (GRCm39)	missense	probably damaging	0.98
IGL02613:Polr1a	APN	6	71,944,304 (GRCm39)	missense	probably damaging	1.00
IGL02693:Polr1a	APN	6	71,940,830 (GRCm39)	splice site	probably benign
IGL02892:Polr1a	APN	6	71,908,680 (GRCm39)	missense	possibly damaging	0.70
IGL03059:Polr1a	APN	6	71,913,496 (GRCm39)	missense	probably benign
IGL03174:Polr1a	APN	6	71,954,331 (GRCm39)	missense	possibly damaging	0.82
R0092:Polr1a	UTSW	6	71,944,439 (GRCm39)	splice site	probably benign
R0217:Polr1a	UTSW	6	71,940,687 (GRCm39)	missense	probably benign	0.19
R0267:Polr1a	UTSW	6	71,951,123 (GRCm39)	missense	probably damaging	0.99
R0329:Polr1a	UTSW	6	71,943,400 (GRCm39)	missense	possibly damaging	0.96
R0330:Polr1a	UTSW	6	71,943,400 (GRCm39)	missense	possibly damaging	0.96
R0352:Polr1a	UTSW	6	71,897,747 (GRCm39)	splice site	probably benign
R0411:Polr1a	UTSW	6	71,955,405 (GRCm39)	missense	possibly damaging	0.95
R0446:Polr1a	UTSW	6	71,927,648 (GRCm39)	critical splice donor site	probably null
R0846:Polr1a	UTSW	6	71,901,627 (GRCm39)	missense	probably damaging	1.00
R1035:Polr1a	UTSW	6	71,944,900 (GRCm39)	missense	probably benign
R1294:Polr1a	UTSW	6	71,889,886 (GRCm39)	missense	probably damaging	0.99
R1460:Polr1a	UTSW	6	71,918,368 (GRCm39)	missense	probably damaging	0.99
R1657:Polr1a	UTSW	6	71,918,519 (GRCm39)	missense	probably damaging	1.00
R1846:Polr1a	UTSW	6	71,953,172 (GRCm39)	missense	probably damaging	0.98
R1862:Polr1a	UTSW	6	71,886,187 (GRCm39)	missense	probably damaging	0.96
R1865:Polr1a	UTSW	6	71,943,508 (GRCm39)	missense	probably damaging	1.00
R1903:Polr1a	UTSW	6	71,944,898 (GRCm39)	missense	probably benign	0.02
R1937:Polr1a	UTSW	6	71,913,536 (GRCm39)	critical splice donor site	probably null
R2063:Polr1a	UTSW	6	71,913,269 (GRCm39)	splice site	probably null
R2071:Polr1a	UTSW	6	71,953,058 (GRCm39)	missense	possibly damaging	0.64
R2084:Polr1a	UTSW	6	71,927,793 (GRCm39)	missense	possibly damaging	0.69
R2377:Polr1a	UTSW	6	71,949,810 (GRCm39)	critical splice donor site	probably null
R2410:Polr1a	UTSW	6	71,951,866 (GRCm39)	missense	probably benign
R3001:Polr1a	UTSW	6	71,890,000 (GRCm39)	missense	probably benign	0.01
R3001:Polr1a	UTSW	6	71,942,628 (GRCm39)	missense	probably benign	0.02
R3002:Polr1a	UTSW	6	71,942,628 (GRCm39)	missense	probably benign	0.02
R3002:Polr1a	UTSW	6	71,890,000 (GRCm39)	missense	probably benign	0.01
R3924:Polr1a	UTSW	6	71,906,434 (GRCm39)	missense	probably benign	0.00
R4105:Polr1a	UTSW	6	71,953,175 (GRCm39)	missense	probably damaging	0.98
R4125:Polr1a	UTSW	6	71,942,690 (GRCm39)	missense	probably benign	0.00
R4271:Polr1a	UTSW	6	71,930,006 (GRCm39)	missense	probably benign	0.02
R4440:Polr1a	UTSW	6	71,927,832 (GRCm39)	missense	probably damaging	0.98
R4667:Polr1a	UTSW	6	71,894,805 (GRCm39)	missense	probably benign	0.30
R4769:Polr1a	UTSW	6	71,927,852 (GRCm39)	missense	probably benign	0.01
R4801:Polr1a	UTSW	6	71,953,054 (GRCm39)	missense	probably benign	0.00
R4802:Polr1a	UTSW	6	71,953,054 (GRCm39)	missense	probably benign	0.00
R4828:Polr1a	UTSW	6	71,943,385 (GRCm39)	missense	possibly damaging	0.93
R4911:Polr1a	UTSW	6	71,886,213 (GRCm39)	missense	possibly damaging	0.67
R5071:Polr1a	UTSW	6	71,908,693 (GRCm39)	missense	possibly damaging	0.71
R5165:Polr1a	UTSW	6	71,944,909 (GRCm39)	missense	probably damaging	1.00
R5223:Polr1a	UTSW	6	71,944,891 (GRCm39)	missense	possibly damaging	0.73
R5239:Polr1a	UTSW	6	71,890,021 (GRCm39)	missense	probably damaging	1.00
R5546:Polr1a	UTSW	6	71,906,350 (GRCm39)	missense	possibly damaging	0.64
R5599:Polr1a	UTSW	6	71,944,346 (GRCm39)	missense	possibly damaging	0.95
R5696:Polr1a	UTSW	6	71,906,410 (GRCm39)	missense	probably benign	0.05
R5850:Polr1a	UTSW	6	71,903,667 (GRCm39)	missense	probably benign	0.00
R6274:Polr1a	UTSW	6	71,931,874 (GRCm39)	splice site	probably null
R6526:Polr1a	UTSW	6	71,906,427 (GRCm39)	missense	possibly damaging	0.89
R6578:Polr1a	UTSW	6	71,953,025 (GRCm39)	missense	possibly damaging	0.93
R6660:Polr1a	UTSW	6	71,944,358 (GRCm39)	missense	probably damaging	0.98
R6892:Polr1a	UTSW	6	71,941,696 (GRCm39)	missense	possibly damaging	0.72
R7274:Polr1a	UTSW	6	71,897,500 (GRCm39)	nonsense	probably null
R7291:Polr1a	UTSW	6	71,918,440 (GRCm39)	missense	probably benign	0.02
R7311:Polr1a	UTSW	6	71,927,863 (GRCm39)	missense	possibly damaging	0.53
R7431:Polr1a	UTSW	6	71,903,643 (GRCm39)	missense	probably benign	0.14
R7479:Polr1a	UTSW	6	71,913,281 (GRCm39)	missense	probably damaging	1.00
R7607:Polr1a	UTSW	6	71,890,005 (GRCm39)	missense	probably benign
R7739:Polr1a	UTSW	6	71,931,819 (GRCm39)	missense	possibly damaging	0.94
R7746:Polr1a	UTSW	6	71,918,496 (GRCm39)	missense	probably damaging	1.00
R7764:Polr1a	UTSW	6	71,930,054 (GRCm39)	missense	probably damaging	1.00
R7835:Polr1a	UTSW	6	71,892,126 (GRCm39)	missense	probably benign	0.02
R8029:Polr1a	UTSW	6	71,889,940 (GRCm39)	nonsense	probably null
R8057:Polr1a	UTSW	6	71,908,644 (GRCm39)	missense	possibly damaging	0.95
R8144:Polr1a	UTSW	6	71,927,600 (GRCm39)	missense	probably benign
R8170:Polr1a	UTSW	6	71,897,733 (GRCm39)	missense	probably benign
R8320:Polr1a	UTSW	6	71,918,368 (GRCm39)	missense	probably damaging	0.99
R8328:Polr1a	UTSW	6	71,897,718 (GRCm39)	missense	probably benign
R8331:Polr1a	UTSW	6	71,953,163 (GRCm39)	missense	probably damaging	1.00
R8362:Polr1a	UTSW	6	71,941,651 (GRCm39)	missense	probably benign	0.00
R8511:Polr1a	UTSW	6	71,897,504 (GRCm39)	missense	probably benign	0.01
R8709:Polr1a	UTSW	6	71,951,832 (GRCm39)	missense	probably benign
R8745:Polr1a	UTSW	6	71,931,755 (GRCm39)	missense	probably damaging	1.00
R8784:Polr1a	UTSW	6	71,927,612 (GRCm39)	missense	probably benign
R9055:Polr1a	UTSW	6	71,892,053 (GRCm39)	missense	possibly damaging	0.46
R9088:Polr1a	UTSW	6	71,908,767 (GRCm39)	missense	probably benign	0.26
R9211:Polr1a	UTSW	6	71,943,521 (GRCm39)	missense	probably damaging	1.00
R9228:Polr1a	UTSW	6	71,931,755 (GRCm39)	missense	probably damaging	1.00
R9240:Polr1a	UTSW	6	71,940,661 (GRCm39)	nonsense	probably null
R9267:Polr1a	UTSW	6	71,942,542 (GRCm39)	missense	probably benign
R9302:Polr1a	UTSW	6	71,901,683 (GRCm39)	critical splice donor site	probably null
R9744:Polr1a	UTSW	6	71,906,372 (GRCm39)	missense	probably benign	0.05

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 On

2010-08-09