Incidental Mutation 'D605:Kat2b'
Institutional Source Beutler Lab
Gene Symbol Kat2b
Ensembl Gene ENSMUSG00000000708
Gene NameK(lysine) acetyltransferase 2B
SynonymsPcaf, A930006P13Rik
Accession Numbers

Genbank: NM_020005

Is this an essential gene? Non essential (E-score: 0.000) question?
Stock #D605 (G1)
Quality Score
Status Validated
Chromosomal Location53566861-53672720 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to G at 53629330 bp
Amino Acid Change Arginine to Glycine at position 99 (R99G)
Ref Sequence ENSEMBL: ENSMUSP00000127659 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000000724] [ENSMUST00000164390]
Predicted Effect probably damaging
Transcript: ENSMUST00000000724
AA Change: R177G

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000000724
Gene: ENSMUSG00000000708
AA Change: R177G

low complexity region 4 21 N/A INTRINSIC
low complexity region 32 55 N/A INTRINSIC
Pfam:PCAF_N 56 308 6.2e-114 PFAM
low complexity region 461 472 N/A INTRINSIC
Pfam:Acetyltransf_7 522 605 1.5e-11 PFAM
Pfam:Acetyltransf_1 530 604 3.2e-11 PFAM
low complexity region 643 659 N/A INTRINSIC
BROMO 702 810 1.08e-44 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000163648
Predicted Effect probably damaging
Transcript: ENSMUST00000164390
AA Change: R99G

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000127659
Gene: ENSMUSG00000000708
AA Change: R99G

Pfam:PCAF_N 1 210 6e-122 PFAM
Meta Mutation Damage Score 0.8320 question?
Coding Region Coverage
  • 1x: 75.6%
  • 3x: 45.1%
Het Detection Efficiency20.0%
Validation Efficiency 89% (63/71)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] CBP and p300 are large nuclear proteins that bind to many sequence-specific factors involved in cell growth and/or differentiation, including c-jun and the adenoviral oncoprotein E1A. The protein encoded by this gene associates with p300/CBP. It has in vitro and in vivo binding activity with CBP and p300, and competes with E1A for binding sites in p300/CBP. It has histone acetyl transferase activity with core histones and nucleosome core particles, indicating that this protein plays a direct role in transcriptional regulation. [provided by RefSeq, Jul 2008]
PHENOTYPE: Mice homozygous for a null allele exhibit no abrnomal phenotype. [provided by MGI curators]
Allele List at MGI

All alleles(122) : Targeted, knock-out(2) Targeted, other(1) Gene trapped(119)

Other mutations in this stock
Total: 4 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
C2cd5 C T 6: 143,029,660 V787I probably benign Het
Ly75 A G 2: 60,352,352 probably null Het
Olfr1474 T A 19: 13,471,157 C62* probably null Het
Sfmbt2 C T 2: 10,579,325 T864I probably benign Het
Other mutations in Kat2b
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00473:Kat2b APN 17 53663623 missense possibly damaging 0.46
IGL00793:Kat2b APN 17 53665824 missense probably benign 0.00
IGL01628:Kat2b APN 17 53610897 missense possibly damaging 0.89
IGL02494:Kat2b APN 17 53653205 missense probably damaging 1.00
IGL03347:Kat2b APN 17 53624351 critical splice acceptor site probably null
cakewalk UTSW 17 53638522 missense probably damaging 1.00
fracking UTSW 17 53624422 missense probably damaging 1.00
R0060:Kat2b UTSW 17 53654543 missense probably damaging 1.00
R0225:Kat2b UTSW 17 53641210 missense probably damaging 1.00
R0372:Kat2b UTSW 17 53638537 missense possibly damaging 0.95
R0638:Kat2b UTSW 17 53644743 splice site probably benign
R0639:Kat2b UTSW 17 53567538 missense probably benign 0.38
R0780:Kat2b UTSW 17 53567448 missense unknown
R1240:Kat2b UTSW 17 53624397 missense probably benign 0.00
R2346:Kat2b UTSW 17 53610904 missense probably benign 0.07
R3402:Kat2b UTSW 17 53665853 missense probably damaging 1.00
R3776:Kat2b UTSW 17 53567581 splice site probably null
R4009:Kat2b UTSW 17 53644741 splice site probably null
R4011:Kat2b UTSW 17 53644741 splice site probably null
R4543:Kat2b UTSW 17 53653140 missense probably benign
R4598:Kat2b UTSW 17 53670798 missense probably benign 0.02
R4785:Kat2b UTSW 17 53653203 missense possibly damaging 0.81
R5079:Kat2b UTSW 17 53663638 missense probably damaging 1.00
R5475:Kat2b UTSW 17 53663581 missense probably damaging 1.00
R6993:Kat2b UTSW 17 53638522 missense probably damaging 1.00
R7047:Kat2b UTSW 17 53663569 missense probably benign 0.01
R7058:Kat2b UTSW 17 53665866 missense probably benign 0.00
R7199:Kat2b UTSW 17 53670678 missense probably damaging 1.00
R7276:Kat2b UTSW 17 53624422 missense probably damaging 1.00
R7418:Kat2b UTSW 17 53610925 missense possibly damaging 0.94
R7535:Kat2b UTSW 17 53624403 missense probably damaging 1.00
R7561:Kat2b UTSW 17 53641258 missense probably benign 0.22
R7723:Kat2b UTSW 17 53638387 missense possibly damaging 0.62
R7976:Kat2b UTSW 17 53648807 missense probably benign 0.00
R8250:Kat2b UTSW 17 53663536 missense probably damaging 1.00
R8277:Kat2b UTSW 17 53641253 missense probably benign 0.01
Nature of Mutation

DNA sequencing using the SOLiD technique identified an A to G transition at position 888 of the Kat2b transcript, in exon 5 of 19 total exons (NM_020005).  Two transcripts are annotated in the NCBI Gene database.  The mutation causes an arginine to glycine change at amino acid 177 of the encoded protein (NP_064389).  The mutation has been confirmed by DNA sequencing using the Sanger method (see trace file).

Protein Function and Prediction

Kat2b is an 813 amino acid histone acetyltransferase that functions to promote transcriptional activation (Uniprot Q9JHD1).  It has significant acetyltransferase activity for histones H3 and H4, and for nucleosome core particles.  Kat2b functions in a large chromatin remodeling complex.  It contains a catalytic N-acetyltransferase domain (aa 484-632) and a bromo domain (aa 721-791).  There is a second shorter protein isoform of Kat2b (NP_001177775).


The mutation is predicted to be probably damaging by the PolyPhen-2 program.

Posted On2010-11-24