Incidental Mutation 'R4899:Azin2'
ID 375997
Institutional Source Beutler Lab
Gene Symbol Azin2
Ensembl Gene ENSMUSG00000028789
Gene Name antizyme inhibitor 2
Synonyms Adc, Odcp, 4933429I20Rik, AZIN2
MMRRC Submission 042503-MU
Accession Numbers
Essential gene? Possibly non essential (E-score: 0.300) question?
Stock # R4899 (G1)
Quality Score 225
Status Not validated
Chromosome 4
Chromosomal Location 128824026-128856235 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) G to A at 128828446 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Proline to Serine at position 254 (P254S)
Ref Sequence ENSEMBL: ENSMUSP00000114086 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000030581] [ENSMUST00000106068] [ENSMUST00000119354]
AlphaFold Q8BVM4
Predicted Effect probably benign
Transcript: ENSMUST00000030581
AA Change: P349S

PolyPhen 2 Score 0.430 (Sensitivity: 0.89; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000030581
Gene: ENSMUSG00000028789
AA Change: P349S

DomainStartEndE-ValueType
Pfam:Orn_Arg_deC_N 45 283 1.9e-69 PFAM
Pfam:Orn_DAP_Arg_deC 286 407 1.7e-22 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000106068
AA Change: P349S

PolyPhen 2 Score 0.430 (Sensitivity: 0.89; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000101683
Gene: ENSMUSG00000028789
AA Change: P349S

DomainStartEndE-ValueType
Pfam:Orn_Arg_deC_N 45 283 6.7e-73 PFAM
Pfam:Orn_DAP_Arg_deC 287 406 1.9e-21 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000119354
AA Change: P254S

PolyPhen 2 Score 0.430 (Sensitivity: 0.89; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000114086
Gene: ENSMUSG00000028789
AA Change: P254S

DomainStartEndE-ValueType
Pfam:Orn_Arg_deC_N 1 188 4.2e-54 PFAM
Pfam:Orn_DAP_Arg_deC 191 312 4.3e-23 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000154515
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.4%
  • 10x: 96.7%
  • 20x: 93.7%
Validation Efficiency
MGI Phenotype FUNCTION: The protein encoded by this gene belongs to the antizyme inhibitor family, which plays a role in cell growth and proliferation by maintaining polyamine homeostasis within the cell. Antizyme inhibitors are homologs of ornithine decarboxylase (ODC, the key enzyme in polyamine biosynthesis) that have lost the ability to decarboxylase ornithine; however, retain the ability to bind to antizymes. Antizymes negatively regulate intracellular polyamine levels by binding to ODC and targeting it for degradation, as well as by inhibiting polyamine uptake. Antizyme inhibitors function as positive regulators of polyamine levels by sequestering antizymes and neutralizing their effect. This gene encodes antizyme inhibitor 2, the second member of this gene family. Like antizyme inhibitor 1, antizyme inhibitor 2 interacts with all 3 antizymes and stimulates ODC activity and polyamine uptake. However, unlike antizyme inhibitor 1, which is ubiquitously expressed and localized in the nucleus and cytoplasm, antizyme inhibitor 2 is predominantly expressed in the brain and testis and localized in the endoplasmic reticulum-golgi intermediate compartment. Recent studies indicate that antizyme inhibitor 2 is also expressed in specific cell types in ovaries, adrenal glands and pancreas, and in mast cells. The exact function of this gene is not known, however, available data suggest its role in cell growth, spermiogenesis, vesicular trafficking and secretion. There has been confusion in literature and databases over the nomenclature of this gene, stemming from an earlier report that a human cDNA clone (identical to ODCp/AZIN2) had arginine decarboxylase (ADC) activity (PMID:14738999). Subsequent studies in human and mouse showed that antizyme inhibitor 2 was devoid of arginine decarboxylase activity (PMID:19956990). Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Sep 2014]
PHENOTYPE: Mice homozygous for a gene trap allele exhibit decreased circulating insulin levels. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 75 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abhd18 C G 3: 40,860,304 (GRCm39) probably null Het
Adra2c A T 5: 35,437,705 (GRCm39) Y159F probably damaging Het
Alkal2 T A 12: 30,934,972 (GRCm39) S64T probably benign Het
Apbb1ip T C 2: 22,713,361 (GRCm39) V72A unknown Het
Atp13a5 A G 16: 29,197,318 (GRCm39) L13P probably damaging Het
Bmpr1b T C 3: 141,546,444 (GRCm39) R481G probably damaging Het
Cacna2d4 G A 6: 119,245,157 (GRCm39) W288* probably null Het
Cass4 A G 2: 172,269,789 (GRCm39) T626A probably benign Het
Cep112 T A 11: 108,497,110 (GRCm39) D683E probably damaging Het
Cfap300 A T 9: 8,022,494 (GRCm39) S243T possibly damaging Het
Chat G T 14: 32,170,934 (GRCm39) S188R possibly damaging Het
Cit A G 5: 116,001,087 (GRCm39) Y162C possibly damaging Het
Clca3a1 T A 3: 144,443,722 (GRCm39) Y676F probably damaging Het
Clec2h A G 6: 128,652,787 (GRCm39) N185D probably benign Het
Cnbd2 G T 2: 156,181,141 (GRCm39) V192F probably benign Het
Col6a3 C A 1: 90,730,149 (GRCm39) G1112V probably damaging Het
Csta2 A T 16: 36,077,731 (GRCm39) Y96F possibly damaging Het
Cyp3a25 A G 5: 145,914,481 (GRCm39) F483S possibly damaging Het
Dscam T C 16: 96,485,018 (GRCm39) E1103G probably benign Het
Dync2h1 G A 9: 7,131,921 (GRCm39) Q1629* probably null Het
Enpp6 A G 8: 47,440,118 (GRCm39) Y38C probably damaging Het
Epg5 T A 18: 78,028,272 (GRCm39) L1271Q probably damaging Het
Fam47e G A 5: 92,722,528 (GRCm39) V75I probably benign Het
Fat3 T C 9: 15,881,095 (GRCm39) D3259G probably damaging Het
Fbxw28 T C 9: 109,159,921 (GRCm39) D211G probably damaging Het
Flnc A G 6: 29,446,842 (GRCm39) N990D probably benign Het
Frat1 T G 19: 41,818,761 (GRCm39) L52R probably damaging Het
Ftmt C G 18: 52,464,658 (GRCm39) probably benign Het
H2-M1 C T 17: 36,982,112 (GRCm39) G163D probably benign Het
Hapln1 A G 13: 89,749,769 (GRCm39) K105E possibly damaging Het
Igkv17-127 G T 6: 67,838,381 (GRCm39) A31S probably benign Het
Il6st T C 13: 112,637,695 (GRCm39) L628P probably damaging Het
Kcnj6 A G 16: 94,633,472 (GRCm39) I213T probably damaging Het
Kidins220 T C 12: 25,063,442 (GRCm39) probably null Het
Lama2 TTTGCGCATT TTT 10: 26,919,639 (GRCm39) probably null Het
Llgl1 C T 11: 60,600,394 (GRCm39) P581L probably benign Het
Mertk C A 2: 128,625,845 (GRCm39) P660Q probably damaging Het
Mrtfa A G 15: 80,902,587 (GRCm39) Y241H probably damaging Het
Mtarc2 A T 1: 184,577,821 (GRCm39) I65N probably damaging Het
Napepld A G 5: 21,888,438 (GRCm39) Y4H probably benign Het
Ncam1 T A 9: 49,456,551 (GRCm39) probably null Het
Nuak2 A T 1: 132,252,724 (GRCm39) K93* probably null Het
Oat A T 7: 132,165,951 (GRCm39) D211E probably benign Het
Or1j19 A G 2: 36,676,810 (GRCm39) Q91R probably benign Het
Or2aj6 G A 16: 19,442,950 (GRCm39) A300V probably benign Het
Or4c109 A C 2: 88,818,454 (GRCm39) L31V probably null Het
Or51b17 A G 7: 103,542,672 (GRCm39) I90T possibly damaging Het
Or7a39 A T 10: 78,715,041 (GRCm39) S12C probably benign Het
Pde4dip C A 3: 97,616,874 (GRCm39) K1789N probably damaging Het
Piezo2 T C 18: 63,211,862 (GRCm39) I1322V possibly damaging Het
Pih1d1 A G 7: 44,803,951 (GRCm39) probably benign Het
Plekhd1 T C 12: 80,769,101 (GRCm39) S454P probably damaging Het
Polr2h G A 16: 20,539,303 (GRCm39) V89M probably damaging Het
Pptc7 G A 5: 122,422,780 (GRCm39) G17S possibly damaging Het
Pramel55 T C 5: 95,949,586 (GRCm39) V111A probably benign Het
Ptpra T C 2: 130,386,356 (GRCm39) V602A probably damaging Het
Rnf123 C T 9: 107,940,879 (GRCm39) R654H probably damaging Het
Rufy4 T C 1: 74,186,822 (GRCm39) C537R probably damaging Het
Samsn1 A G 16: 75,675,991 (GRCm39) S135P probably damaging Het
Sgsm3 A G 15: 80,890,980 (GRCm39) N147S probably benign Het
Shoc1 T C 4: 59,062,640 (GRCm39) Y872C probably damaging Het
Slc22a29 T C 19: 8,138,933 (GRCm39) T510A probably benign Het
Smc4 T A 3: 68,939,144 (GRCm39) H978Q probably damaging Het
Sox7 G A 14: 64,185,927 (GRCm39) R321H probably damaging Het
Spred3 T C 7: 28,861,258 (GRCm39) D307G probably damaging Het
Syne2 T A 12: 75,900,875 (GRCm39) D11E probably benign Het
Tob1 ACAGCAGCAGCAGCAGCAGCAGCAGCA ACAGCAGCAGCAGCAGCAGCAGCA 11: 94,105,278 (GRCm39) probably benign Het
Top2b A T 14: 16,387,313 (GRCm38) I134F probably damaging Het
Tspan1 T A 4: 116,020,563 (GRCm39) R206* probably null Het
Ttc3 A T 16: 94,230,314 (GRCm39) N837I probably damaging Het
Vmn1r36 T C 6: 66,693,549 (GRCm39) T72A possibly damaging Het
Vmn2r10 A G 5: 109,151,324 (GRCm39) S97P probably damaging Het
Zfp2 T A 11: 50,790,841 (GRCm39) I401F probably damaging Het
Zfp629 T C 7: 127,210,190 (GRCm39) T540A possibly damaging Het
Zfr G A 15: 12,166,231 (GRCm39) V834I probably benign Het
Other mutations in Azin2
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00932:Azin2 APN 4 128,844,459 (GRCm39) missense probably damaging 1.00
IGL02040:Azin2 APN 4 128,844,451 (GRCm39) missense possibly damaging 0.78
IGL03349:Azin2 APN 4 128,839,907 (GRCm39) nonsense probably null
R0118:Azin2 UTSW 4 128,843,430 (GRCm39) missense probably damaging 0.97
R1215:Azin2 UTSW 4 128,843,489 (GRCm39) missense probably damaging 0.96
R1940:Azin2 UTSW 4 128,844,577 (GRCm39) splice site probably null
R2939:Azin2 UTSW 4 128,828,397 (GRCm39) missense probably benign 0.44
R5836:Azin2 UTSW 4 128,842,670 (GRCm39) missense probably damaging 1.00
R6511:Azin2 UTSW 4 128,828,259 (GRCm39) missense probably damaging 1.00
R9059:Azin2 UTSW 4 128,828,440 (GRCm39) missense probably benign 0.03
R9209:Azin2 UTSW 4 128,841,341 (GRCm39) missense probably damaging 0.99
R9266:Azin2 UTSW 4 128,856,230 (GRCm39) unclassified probably benign
R9595:Azin2 UTSW 4 128,853,617 (GRCm39) missense probably benign 0.03
T0722:Azin2 UTSW 4 128,839,927 (GRCm39) missense probably benign 0.00
T0975:Azin2 UTSW 4 128,839,927 (GRCm39) missense probably benign 0.00
Z1176:Azin2 UTSW 4 128,828,452 (GRCm39) missense possibly damaging 0.54
Predicted Primers PCR Primer
(F):5'- CATGGCATAAGTGACTCTGCGG -3'
(R):5'- CCTTTCAGTGTTTCAGTGGC -3'

Sequencing Primer
(F):5'- ATAAGTGACTCTGCGGGCCTG -3'
(R):5'- CCATTTTACAGACAGGCAATCTGAGG -3'
Posted On 2016-03-17