Incidental Mutation 'R3870:Stxbp2'
ID 276508
Institutional Source Beutler Lab
Gene Symbol Stxbp2
Ensembl Gene ENSMUSG00000004626
Gene Name syntaxin binding protein 2
Synonyms muSec1, C79054, Sxtp2, Munc18b, Munc-18b, Munc-18-2
MMRRC Submission 040789-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R3870 (G1)
Quality Score 225
Status Validated
Chromosome 8
Chromosomal Location 3680955-3693644 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 3684079 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Threonine to Alanine at position 129 (T129A)
Ref Sequence ENSEMBL: ENSMUSP00000125405 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000159888] [ENSMUST00000159911] [ENSMUST00000160708] [ENSMUST00000162867]
AlphaFold Q64324
Predicted Effect unknown
Transcript: ENSMUST00000004745
AA Change: T128A
SMART Domains Protein: ENSMUSP00000004745
Gene: ENSMUSG00000004626
AA Change: T128A

DomainStartEndE-ValueType
Pfam:Sec1 29 580 6.8e-113 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000159888
Predicted Effect probably benign
Transcript: ENSMUST00000159911
Predicted Effect noncoding transcript
Transcript: ENSMUST00000160435
Predicted Effect probably damaging
Transcript: ENSMUST00000160708
AA Change: T129A

PolyPhen 2 Score 0.995 (Sensitivity: 0.68; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000125405
Gene: ENSMUSG00000004626
AA Change: T129A

DomainStartEndE-ValueType
Pfam:Sec1 29 579 4.9e-112 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000161982
Predicted Effect noncoding transcript
Transcript: ENSMUST00000162737
Predicted Effect probably benign
Transcript: ENSMUST00000162867
Predicted Effect noncoding transcript
Transcript: ENSMUST00000163044
Predicted Effect noncoding transcript
Transcript: ENSMUST00000162974
Meta Mutation Damage Score 0.2401 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.7%
  • 10x: 97.6%
  • 20x: 96.1%
Validation Efficiency 90% (61/68)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a member of the STXBP/unc-18/SEC1 family. The encoded protein is involved in intracellular trafficking, control of SNARE (soluble NSF attachment protein receptor) complex assembly, and the release of cytotoxic granules by natural killer cells. Mutations in this gene are associated with familial hemophagocytic lymphohistiocytosis. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Jan 2013]
PHENOTYPE: Mice homozygous for a knock-out allele exhibit complete preweaning lethality. Mice heterozygous for this allele exhibit decreased stimulated mucin secretion, release of histones in stimulated mast cells and decreased susceptibility to type I hypersensitivity reaction. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 63 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1700028J19Rik T A 7: 43,880,828 (GRCm39) probably null Het
Adam22 C A 5: 8,182,418 (GRCm39) C514F probably damaging Het
Akap8 G A 17: 32,536,813 (GRCm39) probably benign Het
Armcx2 A T X: 133,707,048 (GRCm39) V195E probably benign Het
Atg7 T C 6: 114,674,008 (GRCm39) S301P possibly damaging Het
Cc2d2a C A 5: 43,876,033 (GRCm39) Y1003* probably null Het
Ccdc93 A G 1: 121,390,843 (GRCm39) S272G probably benign Het
Ces1d C G 8: 93,901,714 (GRCm39) L418F probably benign Het
Cntnap5a A G 1: 115,987,979 (GRCm39) E170G probably damaging Het
Cplane1 A T 15: 8,247,948 (GRCm39) K1499M probably damaging Het
Crygs C T 16: 22,624,301 (GRCm39) G102D possibly damaging Het
Ehd4 T A 2: 119,967,434 (GRCm39) D120V probably damaging Het
Eif4g3 T A 4: 137,824,211 (GRCm39) V71E probably damaging Het
Exoc5 A G 14: 49,256,853 (GRCm39) probably benign Het
Glud1 T A 14: 34,047,537 (GRCm39) probably benign Het
Gm10985 TTCTCTCTCTCTCTCTCT TTCTCTCTCTCTCTCT 3: 53,752,626 (GRCm39) probably null Het
Gm11555 G T 11: 99,540,816 (GRCm39) C64* probably null Het
Gm5468 A G 15: 25,414,561 (GRCm39) probably benign Het
Gpatch2 T A 1: 187,054,491 (GRCm39) L74Q probably damaging Het
Hnrnpa0 G A 13: 58,275,713 (GRCm39) R139C probably damaging Het
Hrh1 A G 6: 114,457,880 (GRCm39) Y387C probably damaging Het
Ldb3 A T 14: 34,289,440 (GRCm39) D216E probably damaging Het
Lingo1 A T 9: 56,527,009 (GRCm39) S533T probably benign Het
Lmtk2 T G 5: 144,103,245 (GRCm39) probably benign Het
Map1s A G 8: 71,369,745 (GRCm39) E939G possibly damaging Het
Mast1 G A 8: 85,645,360 (GRCm39) T695I probably damaging Het
Mettl21e G A 1: 44,245,524 (GRCm39) R241W probably benign Het
Mfsd4a G A 1: 131,974,091 (GRCm39) T261I probably damaging Het
Mmel1 T C 4: 154,968,095 (GRCm39) S144P probably benign Het
Myo16 A T 8: 10,492,239 (GRCm39) H727L probably benign Het
Ncoa6 T C 2: 155,257,477 (GRCm39) probably null Het
Nipa2 T C 7: 55,582,690 (GRCm39) R352G probably damaging Het
Oaf C T 9: 43,134,055 (GRCm39) R222Q probably benign Het
Or2ag2b T A 7: 106,418,047 (GRCm39) Y252* probably null Het
Pard3 T C 8: 128,136,167 (GRCm39) S847P probably damaging Het
Pgbd1 C T 13: 21,618,540 (GRCm39) R39H possibly damaging Het
Plcb1 A C 2: 135,167,591 (GRCm39) I462L probably damaging Het
Prex2 T C 1: 11,230,416 (GRCm39) V814A possibly damaging Het
Rasal3 G A 17: 32,612,522 (GRCm39) R780W possibly damaging Het
Rubcnl C T 14: 75,278,356 (GRCm39) P380L probably benign Het
Ryk A G 9: 102,768,427 (GRCm39) E359G probably damaging Het
Sall2 C A 14: 52,551,451 (GRCm39) L579F probably damaging Het
Satb2 A G 1: 56,930,379 (GRCm39) S215P probably damaging Het
Scg3 T C 9: 75,582,781 (GRCm39) probably benign Het
Slc35f5 A G 1: 125,490,098 (GRCm39) T65A probably benign Het
Snx33 T C 9: 56,834,024 (GRCm39) N15S probably benign Het
Stat2 T A 10: 128,113,762 (GRCm39) S180R probably benign Het
Tas1r3 A T 4: 155,945,810 (GRCm39) C529S probably damaging Het
Tlr12 T A 4: 128,510,361 (GRCm39) M630L probably benign Het
Tnfrsf10b T G 14: 70,010,905 (GRCm39) D103E probably benign Het
Togaram1 A C 12: 65,049,419 (GRCm39) E1285D probably benign Het
Tppp A G 13: 74,178,891 (GRCm39) T111A probably benign Het
Trim12c T C 7: 103,997,544 (GRCm39) Q4R probably benign Het
Ttbk2 T G 2: 120,570,500 (GRCm39) S1149R probably damaging Het
Uncx T C 5: 139,533,120 (GRCm39) L395P probably damaging Het
Usp14 A G 18: 10,002,370 (GRCm39) S314P possibly damaging Het
Usp32 A T 11: 84,897,881 (GRCm39) Y1153* probably null Het
Vmn2r6 T C 3: 64,464,042 (GRCm39) E264G probably damaging Het
Vmn2r77 T C 7: 86,461,050 (GRCm39) F792S probably damaging Het
Vps13c A G 9: 67,792,008 (GRCm39) I425V probably benign Het
Vstm4 C T 14: 32,585,712 (GRCm39) A93V probably benign Het
Xrcc6 T A 15: 81,909,885 (GRCm39) S97T probably benign Het
Zscan20 A G 4: 128,480,218 (GRCm39) C758R probably damaging Het
Other mutations in Stxbp2
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00160:Stxbp2 APN 8 3,686,354 (GRCm39) critical splice acceptor site probably null
IGL00466:Stxbp2 APN 8 3,684,065 (GRCm39) missense probably benign 0.29
IGL02315:Stxbp2 APN 8 3,685,607 (GRCm39) unclassified probably benign
IGL02508:Stxbp2 APN 8 3,682,531 (GRCm39) missense probably damaging 1.00
IGL02811:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02833:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02868:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02869:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02896:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02926:Stxbp2 APN 8 3,685,629 (GRCm39) missense probably benign 0.31
IGL02927:Stxbp2 APN 8 3,692,685 (GRCm39) missense possibly damaging 0.95
IGL02928:Stxbp2 APN 8 3,691,736 (GRCm39) missense probably damaging 0.99
IGL02943:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02945:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02948:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02951:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02972:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02976:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02977:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02983:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL02993:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL03008:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL03009:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL03038:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL03051:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL03061:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL03072:Stxbp2 APN 8 3,691,971 (GRCm39) missense probably benign 0.44
IGL03110:Stxbp2 APN 8 3,683,342 (GRCm39) missense probably damaging 1.00
IGL02988:Stxbp2 UTSW 8 3,683,267 (GRCm39) intron probably benign
R0463:Stxbp2 UTSW 8 3,682,559 (GRCm39) missense probably damaging 1.00
R0608:Stxbp2 UTSW 8 3,682,559 (GRCm39) missense probably damaging 1.00
R0755:Stxbp2 UTSW 8 3,692,019 (GRCm39) missense probably benign 0.01
R1328:Stxbp2 UTSW 8 3,692,657 (GRCm39) missense possibly damaging 0.56
R1771:Stxbp2 UTSW 8 3,684,064 (GRCm39) missense probably benign 0.01
R1962:Stxbp2 UTSW 8 3,692,672 (GRCm39) missense probably benign 0.00
R2195:Stxbp2 UTSW 8 3,684,615 (GRCm39) splice site probably null
R2319:Stxbp2 UTSW 8 3,683,834 (GRCm39) missense possibly damaging 0.95
R3614:Stxbp2 UTSW 8 3,681,196 (GRCm39) missense possibly damaging 0.94
R3876:Stxbp2 UTSW 8 3,683,369 (GRCm39) critical splice donor site probably null
R4703:Stxbp2 UTSW 8 3,682,521 (GRCm39) missense probably damaging 1.00
R6533:Stxbp2 UTSW 8 3,692,683 (GRCm39) missense probably benign 0.01
R6623:Stxbp2 UTSW 8 3,682,561 (GRCm39) missense probably damaging 1.00
R6665:Stxbp2 UTSW 8 3,691,998 (GRCm39) missense probably benign 0.41
R6798:Stxbp2 UTSW 8 3,691,180 (GRCm39) missense probably benign
R7152:Stxbp2 UTSW 8 3,682,583 (GRCm39) missense probably benign 0.33
R7326:Stxbp2 UTSW 8 3,691,151 (GRCm39) missense
R8237:Stxbp2 UTSW 8 3,685,695 (GRCm39) missense
R8268:Stxbp2 UTSW 8 3,682,234 (GRCm39) missense
R8709:Stxbp2 UTSW 8 3,683,914 (GRCm39) missense possibly damaging 0.50
R8811:Stxbp2 UTSW 8 3,689,541 (GRCm39) missense
R9018:Stxbp2 UTSW 8 3,692,627 (GRCm39) intron probably benign
R9043:Stxbp2 UTSW 8 3,684,478 (GRCm39) missense
R9048:Stxbp2 UTSW 8 3,687,218 (GRCm39) missense
R9212:Stxbp2 UTSW 8 3,686,220 (GRCm39) missense
R9421:Stxbp2 UTSW 8 3,682,264 (GRCm39) missense
R9643:Stxbp2 UTSW 8 3,686,392 (GRCm39) missense
Z1177:Stxbp2 UTSW 8 3,691,123 (GRCm39) missense probably benign
Predicted Primers PCR Primer
(F):5'- ATTGCGGACTTCCAGGGAAC -3'
(R):5'- CTAGGAATGTGCACAAGGCTAG -3'

Sequencing Primer
(F):5'- CAAAGCAGCCCATATCTTCTTCACTG -3'
(R):5'- GCTAGGGCCCCAGGAAAG -3'
Posted On 2015-04-06