Incidental Mutation 'F5426:Cdk5rap2'
ID585
Institutional Source Beutler Lab
Gene Symbol Cdk5rap2
Ensembl Gene ENSMUSG00000039298
Gene NameCDK5 regulatory subunit associated protein 2
Synonyms2900018K03Rik, an
Accession Numbers

Genbank: NM_145990.3

Is this an essential gene? Possibly non essential (E-score: 0.385) question?
Stock #F5426 (G1) of strain 24G1
Quality Score
Status Validated
Chromosome4
Chromosomal Location70216856-70410443 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to T at 70254803 bp
ZygosityHeterozygous
Amino Acid Change Valine to Glutamic Acid at position 1344 (V1344E)
Ref Sequence ENSEMBL: ENSMUSP00000119891 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000076541] [ENSMUST00000138561] [ENSMUST00000144099]
Predicted Effect probably benign
Transcript: ENSMUST00000076541
Predicted Effect probably benign
Transcript: ENSMUST00000138561
AA Change: V84E

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000116928
Gene: ENSMUSG00000039298
AA Change: V84E

DomainStartEndE-ValueType
Blast:BRLZ 228 284 1e-13 BLAST
low complexity region 297 314 N/A INTRINSIC
low complexity region 368 386 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000140108
Predicted Effect probably benign
Transcript: ENSMUST00000144099
AA Change: V1344E

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000119891
Gene: ENSMUSG00000039298
AA Change: V1344E

DomainStartEndE-ValueType
Pfam:Cnn_1N 58 130 3.6e-26 PFAM
coiled coil region 210 345 N/A INTRINSIC
low complexity region 368 381 N/A INTRINSIC
coiled coil region 388 462 N/A INTRINSIC
coiled coil region 569 616 N/A INTRINSIC
low complexity region 761 776 N/A INTRINSIC
low complexity region 791 800 N/A INTRINSIC
coiled coil region 960 1001 N/A INTRINSIC
coiled coil region 1112 1140 N/A INTRINSIC
coiled coil region 1200 1237 N/A INTRINSIC
Blast:BRLZ 1479 1535 6e-13 BLAST
low complexity region 1548 1565 N/A INTRINSIC
low complexity region 1619 1637 N/A INTRINSIC
low complexity region 1700 1711 N/A INTRINSIC
low complexity region 1811 1822 N/A INTRINSIC
Meta Mutation Damage Score 0.0898 question?
Coding Region Coverage
  • 1x: 78.1%
  • 3x: 56.4%
Het Detection Efficiency35.2%
Validation Efficiency 91% (29/32)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a regulator of CDK5 (cyclin-dependent kinase 5) activity. The protein encoded by this gene is localized to the centrosome and Golgi complex, interacts with CDK5R1 and pericentrin (PCNT), plays a role in centriole engagement and microtubule nucleation, and has been linked to primary microcephaly and Alzheimer's disease. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2013]
PHENOTYPE: Homozygous mutant phenotype varies by strain background. Severely affected mutants exhibit small size, severe anemia, and neonatal death. Mildly affected mutants are viable with mild macrocytic anemia, reduced fertility and radiation senstitivity. [provided by MGI curators]
Allele List at MGI

All alleles(22) : Targeted, other(1) Gene trapped(20) Radiation induced(1)

Other mutations in this stock
Total: 10 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
D16Ertd472e C T 16: 78,548,001 C73Y probably damaging Het
Grk4 G A 5: 34,745,159 probably benign Het
Odc1 G A 12: 17,549,423 probably null Het
Olfr110 A C 17: 37,499,536 K295T probably damaging Het
Prss12 T C 3: 123,506,472 V744A probably damaging Het
Pudp A T 18: 50,568,541 N40K probably benign Het
Rab30 T C 7: 92,829,668 I107T possibly damaging Het
Ryr3 T A 2: 112,766,338 probably benign Het
Sh2d1b1 C A 1: 170,279,781 probably null Het
Tmc5 T A 7: 118,623,323 V82D probably benign Het
Other mutations in Cdk5rap2
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00425:Cdk5rap2 APN 4 70403472 critical splice donor site probably null
IGL01305:Cdk5rap2 APN 4 70380235 missense possibly damaging 0.52
IGL01987:Cdk5rap2 APN 4 70302082 critical splice donor site probably null
IGL02213:Cdk5rap2 APN 4 70317602 splice site probably benign
IGL02732:Cdk5rap2 APN 4 70266665 nonsense probably null
IGL03063:Cdk5rap2 APN 4 70354877 critical splice acceptor site probably null
IGL03244:Cdk5rap2 APN 4 70281435 missense probably benign 0.19
ANU22:Cdk5rap2 UTSW 4 70380235 missense possibly damaging 0.52
R0010:Cdk5rap2 UTSW 4 70243459 missense probably benign 0.01
R0010:Cdk5rap2 UTSW 4 70243459 missense probably benign 0.01
R0044:Cdk5rap2 UTSW 4 70360901 missense probably damaging 1.00
R0044:Cdk5rap2 UTSW 4 70360901 missense probably damaging 1.00
R0482:Cdk5rap2 UTSW 4 70410269 start gained probably benign
R0548:Cdk5rap2 UTSW 4 70349142 critical splice donor site probably null
R0594:Cdk5rap2 UTSW 4 70354813 missense probably damaging 0.98
R0737:Cdk5rap2 UTSW 4 70337375 missense probably benign 0.01
R0788:Cdk5rap2 UTSW 4 70307231 missense possibly damaging 0.90
R0960:Cdk5rap2 UTSW 4 70243508 missense probably benign 0.03
R1682:Cdk5rap2 UTSW 4 70302150 missense possibly damaging 0.92
R1727:Cdk5rap2 UTSW 4 70272679 missense probably benign
R1727:Cdk5rap2 UTSW 4 70289972 missense possibly damaging 0.70
R1768:Cdk5rap2 UTSW 4 70307233 missense probably benign 0.09
R1903:Cdk5rap2 UTSW 4 70403554 splice site probably null
R2270:Cdk5rap2 UTSW 4 70266678 missense probably benign 0.01
R2271:Cdk5rap2 UTSW 4 70266678 missense probably benign 0.01
R2272:Cdk5rap2 UTSW 4 70266678 missense probably benign 0.01
R2364:Cdk5rap2 UTSW 4 70360809 critical splice donor site probably null
R2763:Cdk5rap2 UTSW 4 70281271 missense probably benign
R2893:Cdk5rap2 UTSW 4 70289873 missense probably benign
R2894:Cdk5rap2 UTSW 4 70289873 missense probably benign
R2958:Cdk5rap2 UTSW 4 70289977 frame shift probably null
R2959:Cdk5rap2 UTSW 4 70289977 frame shift probably null
R2961:Cdk5rap2 UTSW 4 70289977 frame shift probably null
R2962:Cdk5rap2 UTSW 4 70289977 frame shift probably null
R2963:Cdk5rap2 UTSW 4 70289977 frame shift probably null
R3522:Cdk5rap2 UTSW 4 70250410 missense probably damaging 1.00
R3725:Cdk5rap2 UTSW 4 70235437 missense possibly damaging 0.89
R3726:Cdk5rap2 UTSW 4 70235437 missense possibly damaging 0.89
R3876:Cdk5rap2 UTSW 4 70289977 frame shift probably null
R3919:Cdk5rap2 UTSW 4 70380223 missense possibly damaging 0.50
R4025:Cdk5rap2 UTSW 4 70250387 missense probably damaging 0.98
R4324:Cdk5rap2 UTSW 4 70353614 missense probably damaging 1.00
R4485:Cdk5rap2 UTSW 4 70239283 critical splice donor site probably null
R4516:Cdk5rap2 UTSW 4 70276715 splice site probably null
R4556:Cdk5rap2 UTSW 4 70239312 missense probably damaging 0.97
R4560:Cdk5rap2 UTSW 4 70315331 missense probably benign 0.03
R4584:Cdk5rap2 UTSW 4 70266760 missense probably damaging 1.00
R4620:Cdk5rap2 UTSW 4 70266706 missense probably benign 0.00
R4639:Cdk5rap2 UTSW 4 70302176 missense probably damaging 0.97
R4755:Cdk5rap2 UTSW 4 70238425 missense probably damaging 1.00
R4947:Cdk5rap2 UTSW 4 70228592 splice site probably null
R5116:Cdk5rap2 UTSW 4 70307238 missense possibly damaging 0.67
R5449:Cdk5rap2 UTSW 4 70276651 missense probably benign 0.00
R5643:Cdk5rap2 UTSW 4 70266733 missense probably damaging 0.99
R5899:Cdk5rap2 UTSW 4 70243593 splice site probably benign
R6177:Cdk5rap2 UTSW 4 70281482 missense probably damaging 0.99
R6254:Cdk5rap2 UTSW 4 70364032 missense probably damaging 1.00
R6326:Cdk5rap2 UTSW 4 70235454 missense probably damaging 1.00
R6335:Cdk5rap2 UTSW 4 70266612 missense possibly damaging 0.79
R6534:Cdk5rap2 UTSW 4 70354813 missense probably damaging 0.98
R6857:Cdk5rap2 UTSW 4 70245396 nonsense probably null
R6959:Cdk5rap2 UTSW 4 70360669 splice site probably null
R7104:Cdk5rap2 UTSW 4 70349156 missense probably benign 0.00
R7145:Cdk5rap2 UTSW 4 70238231 missense probably benign 0.13
R7223:Cdk5rap2 UTSW 4 70235447 missense probably benign 0.02
R7234:Cdk5rap2 UTSW 4 70376787 splice site probably null
R7240:Cdk5rap2 UTSW 4 70291908 missense probably damaging 1.00
R7247:Cdk5rap2 UTSW 4 70337429 missense probably damaging 1.00
R7382:Cdk5rap2 UTSW 4 70290025 missense probably benign 0.19
R7413:Cdk5rap2 UTSW 4 70254735 missense probably damaging 1.00
R7576:Cdk5rap2 UTSW 4 70266872 missense probably benign 0.01
R8236:Cdk5rap2 UTSW 4 70242485 missense probably benign
R8434:Cdk5rap2 UTSW 4 70364020 missense probably benign 0.00
Z1176:Cdk5rap2 UTSW 4 70266743 missense probably damaging 0.99
Nature of Mutation

DNA sequencing using the SOLiD technique identified a T to A transversion at position 2320 of the Cdk5rap2 transcript in exon 20 of 37 exons using Genbank record NM_145990.3.  Multiple transcripts of the Cdk5rap2 gene are displayed on Ensembl and Vega. The mutated nucleotide causes a valine to glutamic acid substitution at amino acid 1344 of the encoded protein. The mutation has been confirmed by DNA sequencing using the Sanger method (Figure 1).

Protein Function and Prediction

The Cdk5rap2 gene encodes an 1822 amino acid regulator of CDK5 activity via its interaction with CDK5R1, and is phosphorylated by CDK5. The protein is involved in regulation of mitotic spindle orientation and brain development, and interacts with a number of proteins involved in mitotic spindle orientation (Uniprot Q8K389). In mice, the homozygous mutant phenotype varies by strain background. Severely affected mutants exhibit small size, severe anemia, and neonatal death. Mildly affected mutants are viable with mild macrocytic anemia, reduced fertility and radiation senstitivity. In humans, mutations cause autosomal recessive microcephaly-3 (OMIM 604804).  

Posted On2011-03-09