Incidental Mutation 'R6665:Stxbp2'
ID 526935
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 044785-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R6665 (G1)
Quality Score 225.009
Status Validated
Chromosome 8
Chromosomal Location 3680955-3693644 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 3691998 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Methionine to Valine at position 547 (M547V)
Ref Sequence ENSEMBL: ENSMUSP00000125405 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000160708]
AlphaFold Q64324
Predicted Effect unknown
Transcript: ENSMUST00000004745
AA Change: M547V
SMART Domains Protein: ENSMUSP00000004745
Gene: ENSMUSG00000004626
AA Change: M547V

DomainStartEndE-ValueType
Pfam:Sec1 29 580 6.8e-113 PFAM
Predicted Effect unknown
Transcript: ENSMUST00000159370
AA Change: M78V
Predicted Effect noncoding transcript
Transcript: ENSMUST00000159652
Predicted Effect noncoding transcript
Transcript: ENSMUST00000160435
Predicted Effect probably benign
Transcript: ENSMUST00000160708
AA Change: M547V

PolyPhen 2 Score 0.415 (Sensitivity: 0.89; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000125405
Gene: ENSMUSG00000004626
AA Change: M547V

DomainStartEndE-ValueType
Pfam:Sec1 29 579 4.9e-112 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000161629
Predicted Effect noncoding transcript
Transcript: ENSMUST00000162047
Predicted Effect noncoding transcript
Transcript: ENSMUST00000162832
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.5%
  • 10x: 97.7%
  • 20x: 93.0%
Validation Efficiency 100% (34/34)
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: 34 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adamts15 A G 9: 30,815,775 (GRCm39) probably null Het
Adamts16 T G 13: 70,927,689 (GRCm39) K517Q probably damaging Het
Atp9b A C 18: 80,960,950 (GRCm39) V87G probably benign Het
Avil A G 10: 126,856,394 (GRCm39) K808E probably damaging Het
Bin2 T C 15: 100,554,676 (GRCm39) E49G probably damaging Het
Ccdc146 T C 5: 21,508,092 (GRCm39) Y652C probably damaging Het
Cd6 T C 19: 10,768,367 (GRCm39) N541D probably benign Het
Col28a1 A G 6: 8,062,277 (GRCm39) V671A probably benign Het
Dock6 C T 9: 21,751,208 (GRCm39) C355Y probably damaging Het
Dsc2 A G 18: 20,183,205 (GRCm39) F71S probably damaging Het
Dusp8 G A 7: 141,643,842 (GRCm39) P24S probably damaging Het
Dysf A G 6: 84,107,098 (GRCm39) Y1151C probably benign Het
Fhip2b A T 14: 70,823,078 (GRCm39) L659Q probably damaging Het
Frem2 T C 3: 53,562,077 (GRCm39) Y810C probably damaging Het
Gpat2 G C 2: 127,273,838 (GRCm39) G294R possibly damaging Het
Hexb T C 13: 97,315,893 (GRCm39) N380D probably benign Het
Ice1 T C 13: 70,751,592 (GRCm39) E1498G possibly damaging Het
Lrif1 T A 3: 106,642,659 (GRCm39) probably null Het
Myo9a G T 9: 59,779,155 (GRCm39) G1637V probably benign Het
Myod1 A T 7: 46,026,281 (GRCm39) H62L probably damaging Het
Myoz3 A C 18: 60,709,495 (GRCm39) L222R probably damaging Het
Naca T A 10: 127,884,227 (GRCm39) N2180K probably damaging Het
Or6c76 T C 10: 129,612,116 (GRCm39) F111S probably damaging Het
Pik3cb A G 9: 98,955,702 (GRCm39) V405A probably benign Het
Prkdc T C 16: 15,603,914 (GRCm39) probably null Het
Rab32 T C 10: 10,433,846 (GRCm39) probably benign Het
Serpinb10 A C 1: 107,474,597 (GRCm39) N253T possibly damaging Het
Slc13a5 C T 11: 72,151,186 (GRCm39) V131I probably damaging Het
Slc25a40 A G 5: 8,502,788 (GRCm39) N290S probably benign Het
Slc6a6 T C 6: 91,703,020 (GRCm39) V131A probably benign Het
Spef2 A T 15: 9,600,604 (GRCm39) probably null Het
Tmem247 A T 17: 87,225,998 (GRCm39) Q146L probably benign Het
Vmn2r67 T C 7: 84,785,900 (GRCm39) I702V probably benign Het
Zmynd15 T C 11: 70,355,636 (GRCm39) S436P probably benign 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
R3870:Stxbp2 UTSW 8 3,684,079 (GRCm39) missense probably damaging 1.00
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
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'- GAAAGCTGTGGCCCTTTGTG -3'
(R):5'- TTAGGCGTTTGAGGACAACAAATC -3'

Sequencing Primer
(F):5'- TAGCTCCCAGGCAGCTGTC -3'
(R):5'- AATCTAACTGCAGACTCTAAGGG -3'
Posted On 2018-07-23