Mutagenetix > Incidental Mutations

Incidental Mutation 'D4043:Polr1a'

255

Institutional Source

Beutler Lab

Gene Symbol

Polr1a

Ensembl Gene

ENSMUSG00000049553

Gene Name

polymerase (RNA) I polypeptide A

Synonyms

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

Accession Numbers

Genbank: NM_009088; MGI: 1096397

Is this an essential gene?

Essential (E-score: 1.000) question?

Stock #

D4043 (G3) of strain 483

Quality Score

Status

Validated

Chromosome

Chromosomal Location

71909053-71984935 bp(+) (GRCm38)

Type of Mutation

missense

DNA Base Change (assembly)

G to A at 71941417 bp (GRCm38)

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
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

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH 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	splice site	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
R7274:Polr1a	UTSW	6	71920516	nonsense	probably null
R7291:Polr1a	UTSW	6	71941456	missense	probably benign	0.02
R7311:Polr1a	UTSW	6	71950879	missense	possibly damaging	0.53
R7431:Polr1a	UTSW	6	71926659	missense	probably benign	0.14
R7479:Polr1a	UTSW	6	71936297	missense	probably damaging	1.00
R7607:Polr1a	UTSW	6	71913021	missense	probably benign
R7739:Polr1a	UTSW	6	71954835	missense	possibly damaging	0.94
R7746:Polr1a	UTSW	6	71941512	missense	probably damaging	1.00
R7764:Polr1a	UTSW	6	71953070	missense	probably damaging	1.00
R7835:Polr1a	UTSW	6	71915142	missense	probably benign	0.02
R8029:Polr1a	UTSW	6	71912956	nonsense	probably null
R8057:Polr1a	UTSW	6	71931660	missense	possibly damaging	0.95
R8144:Polr1a	UTSW	6	71950616	missense	probably benign
R8170:Polr1a	UTSW	6	71920749	missense	probably benign
R8320:Polr1a	UTSW	6	71941384	missense	probably damaging	0.99
R8328:Polr1a	UTSW	6	71920734	missense	probably benign
R8331:Polr1a	UTSW	6	71976179	missense	probably damaging	1.00
R8362:Polr1a	UTSW	6	71964667	missense	probably benign	0.00
R8511:Polr1a	UTSW	6	71920520	missense	probably benign	0.01
R8709:Polr1a	UTSW	6	71974848	missense	probably benign
R8745:Polr1a	UTSW	6	71954771	missense	probably damaging	1.00
R8784:Polr1a	UTSW	6	71950628	missense	probably benign
R9055:Polr1a	UTSW	6	71915069	missense	possibly damaging	0.46
R9088:Polr1a	UTSW	6	71931783	missense	probably benign	0.26
R9211:Polr1a	UTSW	6	71966537	missense	probably damaging	1.00
R9228:Polr1a	UTSW	6	71954771	missense	probably damaging	1.00
R9240:Polr1a	UTSW	6	71963677	nonsense	probably null
R9267:Polr1a	UTSW	6	71965558	missense	probably benign
R9302:Polr1a	UTSW	6	71924699	critical splice donor site	probably null

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