Incidental Mutation 'D3080:Fbxl5'
ID117
Institutional Source Beutler Lab
Gene Symbol Fbxl5
Ensembl Gene ENSMUSG00000039753
Gene NameF-box and leucine-rich repeat protein 5
SynonymsFbl4, Fir4
Accession Numbers

Genbank: NM_001159963.1, NM_178729.4; Ensemble: ENSMUST00000114047, ENSMUST00000114047, ENSMUST00000119523, ENSMUST00000141902, ENSMUST00000087465, ENSMUST00000121736, ENSMUST00000124610                                     

Is this an essential gene? Essential (E-score: 1.000) question?
Stock #D3080 of strain grasshopper
Quality Score
Status Validated
Chromosome5
Chromosomal Location43744615-43821638 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to T at 43758366 bp
ZygosityHeterozygous
Amino Acid Change Methionine to Lysine at position 568 (M568K)
Ref Sequence ENSEMBL: ENSMUSP00000116720 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000047857] [ENSMUST00000087465] [ENSMUST00000114047] [ENSMUST00000119523] [ENSMUST00000121736] [ENSMUST00000124610] [ENSMUST00000196483]
Predicted Effect probably benign
Transcript: ENSMUST00000047857
AA Change: M568K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000045792
Gene: ENSMUSG00000039753
AA Change: M568K

DomainStartEndE-ValueType
Pfam:Hemerythrin 6 138 1.3e-10 PFAM
FBOX 208 248 2.31e-9 SMART
low complexity region 289 310 N/A INTRINSIC
LRR 355 379 2.43e2 SMART
LRR 382 407 4.87e-4 SMART
low complexity region 481 492 N/A INTRINSIC
LRR 596 621 2.45e0 SMART
LRR 624 649 4.65e-1 SMART
Blast:LRR 650 681 2e-13 BLAST
Predicted Effect probably benign
Transcript: ENSMUST00000087465
AA Change: M568K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000084733
Gene: ENSMUSG00000039753
AA Change: M568K

DomainStartEndE-ValueType
Pfam:Hemerythrin 6 138 4.3e-15 PFAM
FBOX 208 248 2.31e-9 SMART
low complexity region 289 310 N/A INTRINSIC
LRR 355 379 2.43e2 SMART
LRR 382 407 4.87e-4 SMART
low complexity region 481 492 N/A INTRINSIC
LRR 596 621 1.23e2 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000114047
AA Change: M562K

PolyPhen 2 Score 0.005 (Sensitivity: 0.97; Specificity: 0.74)
SMART Domains Protein: ENSMUSP00000109681
Gene: ENSMUSG00000039753
AA Change: M562K

DomainStartEndE-ValueType
Pfam:Hemerythrin 19 132 4.4e-11 PFAM
FBOX 202 242 2.31e-9 SMART
low complexity region 283 304 N/A INTRINSIC
LRR 349 373 2.43e2 SMART
LRR 376 401 4.87e-4 SMART
low complexity region 475 486 N/A INTRINSIC
LRR 590 615 2.45e0 SMART
LRR 618 643 4.65e-1 SMART
Blast:LRR 644 675 2e-13 BLAST
Predicted Effect probably benign
Transcript: ENSMUST00000119523
AA Change: M551K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000113557
Gene: ENSMUSG00000039753
AA Change: M551K

DomainStartEndE-ValueType
Pfam:Hemerythrin 6 121 2.2e-9 PFAM
FBOX 191 231 2.31e-9 SMART
low complexity region 272 293 N/A INTRINSIC
LRR 338 362 2.43e2 SMART
LRR 365 390 4.87e-4 SMART
low complexity region 464 475 N/A INTRINSIC
LRR 579 604 2.45e0 SMART
LRR 607 632 4.65e-1 SMART
Blast:LRR 633 664 2e-13 BLAST
Predicted Effect probably benign
Transcript: ENSMUST00000121736
AA Change: M525K

PolyPhen 2 Score 0.005 (Sensitivity: 0.97; Specificity: 0.74)
SMART Domains Protein: ENSMUSP00000112444
Gene: ENSMUSG00000039753
AA Change: M525K

DomainStartEndE-ValueType
PDB:3V5Z|B 1 118 2e-71 PDB
FBOX 165 205 2.31e-9 SMART
low complexity region 246 267 N/A INTRINSIC
LRR 312 336 2.43e2 SMART
LRR 339 364 4.87e-4 SMART
low complexity region 438 449 N/A INTRINSIC
LRR 553 578 1.23e2 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000124421
Predicted Effect probably benign
Transcript: ENSMUST00000124610
AA Change: M568K

PolyPhen 2 Score 0.005 (Sensitivity: 0.97; Specificity: 0.74)
SMART Domains Protein: ENSMUSP00000116720
Gene: ENSMUSG00000039753
AA Change: M568K

DomainStartEndE-ValueType
Pfam:Hemerythrin 6 138 5.7e-12 PFAM
FBOX 208 248 1.5e-11 SMART
low complexity region 289 310 N/A INTRINSIC
LRR 355 379 1e0 SMART
LRR 382 407 2e-6 SMART
low complexity region 481 492 N/A INTRINSIC
LRR 596 621 1e-2 SMART
LRR 624 649 1.9e-3 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000140469
Predicted Effect unknown
Transcript: ENSMUST00000141902
AA Change: M488K
SMART Domains Protein: ENSMUSP00000120338
Gene: ENSMUSG00000039753
AA Change: M488K

DomainStartEndE-ValueType
PDB:3V5Z|B 2 82 3e-43 PDB
FBOX 129 169 2.31e-9 SMART
low complexity region 210 231 N/A INTRINSIC
LRR 276 300 2.43e2 SMART
LRR 303 328 4.87e-4 SMART
low complexity region 402 413 N/A INTRINSIC
LRR 517 542 2.45e0 SMART
LRR 545 570 4.65e-1 SMART
Blast:LRR 571 602 3e-13 BLAST
Predicted Effect noncoding transcript
Transcript: ENSMUST00000143316
Predicted Effect probably benign
Transcript: ENSMUST00000196483
AA Change: M567K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000143703
Gene: ENSMUSG00000039753
AA Change: M567K

DomainStartEndE-ValueType
Pfam:Hemerythrin 6 138 1.3e-10 PFAM
FBOX 208 248 2.31e-9 SMART
low complexity region 289 309 N/A INTRINSIC
LRR 354 378 2.43e2 SMART
LRR 381 406 4.87e-4 SMART
low complexity region 480 491 N/A INTRINSIC
LRR 595 620 2.45e0 SMART
LRR 623 648 4.65e-1 SMART
Blast:LRR 649 680 2e-13 BLAST
Predicted Effect noncoding transcript
Transcript: ENSMUST00000196543
Meta Mutation Damage Score 0.0815 question?
Coding Region Coverage
  • 1x: 88.9%
  • 3x: 76.7%
Validation Efficiency 82% (141/173)
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 F-box protein family which is characterized by an approximately 40 amino acid motif, the F-box. The F-box proteins constitute one of the four subunits of ubiquitin protein ligase complex called SCFs (SKP1-cullin-F-box), which function in phosphorylation-dependent ubiquitination. The F-box proteins are divided into 3 classes: Fbws containing WD-40 domains, Fbls containing leucine-rich repeats, and Fbxs containing either different protein-protein interaction modules or no recognizable motifs. The protein encoded by this gene belongs to the Fbls class and, in addition to an F-box, contains several tandem leucine-rich repeats. Alternatively spliced transcript variants have been described for this locus. [provided by RefSeq, Aug 2010]
PHENOTYPE: Mice homozygous for a null mutation display embryonic lethality before turning of the embryo with iron overload, growth retardation, and hemorrhage. Mice heterozygous for a knock-out allele exhibit abnormal iron homeostasis when fed a low iron diet. [provided by MGI curators]
Allele List at MGI

All alleles(10) : Gene trapped(10)

Other mutations in this stock
Total: 20 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
2310003L06Rik C A 5: 87,971,987 P201Q possibly damaging Het
Bdp1 A T 13: 100,023,621 S2417R probably benign Het
Dscaml1 A T 9: 45,684,325 H783L probably benign Het
Gab1 T A 8: 80,766,378 D710V probably damaging Homo
Gabrr2 T C 4: 33,084,466 F128S probably damaging Het
Gm8251 C A 1: 44,067,335 Het
Hyou1 T A 9: 44,384,477 V343E probably damaging Het
Nlrp4a A G 7: 26,444,341 T44A probably benign Het
Nsd3 C A 8: 25,713,545 T1362N possibly damaging Homo
Olfr523 G A 7: 140,176,362 V81M possibly damaging Het
Pcm1 T A 8: 41,275,939 N649K probably damaging Homo
Pde4dip T C 3: 97,766,830 K257E probably damaging Het
Pfpl G A 19: 12,428,832 R149Q probably damaging Homo
Pou2f2 G T 7: 25,097,133 probably benign Het
Rptn A G 3: 93,395,828 D156G possibly damaging Het
Sec31a T C 5: 100,363,832 D1107G probably damaging Het
Smyd3 A G 1: 179,086,422 Y239H probably damaging Het
Stoml3 T C 3: 53,497,994 F32S probably benign Het
Tnnc1 C A 14: 31,210,190 D62E probably damaging Homo
Vsig10 C T 5: 117,343,819 A358V probably damaging Het
Other mutations in Fbxl5
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00236:Fbxl5 APN 5 43765336 missense probably damaging 1.00
IGL00797:Fbxl5 APN 5 43758401 missense probably damaging 1.00
IGL00811:Fbxl5 APN 5 43758225 missense probably damaging 1.00
IGL01065:Fbxl5 APN 5 43745334 missense probably damaging 1.00
IGL01626:Fbxl5 APN 5 43758705 missense probably benign 0.00
IGL02285:Fbxl5 APN 5 43765348 missense possibly damaging 0.88
PIT4498001:Fbxl5 UTSW 5 43750981 missense possibly damaging 0.73
R0195:Fbxl5 UTSW 5 43770798 missense probably damaging 1.00
R0647:Fbxl5 UTSW 5 43768069 missense probably damaging 0.98
R1540:Fbxl5 UTSW 5 43758636 missense possibly damaging 0.92
R1545:Fbxl5 UTSW 5 43770798 missense probably damaging 1.00
R1569:Fbxl5 UTSW 5 43765461 missense probably damaging 1.00
R1921:Fbxl5 UTSW 5 43765490 missense probably benign 0.16
R3081:Fbxl5 UTSW 5 43750880 missense probably damaging 1.00
R3776:Fbxl5 UTSW 5 43758276 missense possibly damaging 0.57
R4096:Fbxl5 UTSW 5 43758241 missense probably benign 0.19
R4275:Fbxl5 UTSW 5 43762772 intron probably benign
R4383:Fbxl5 UTSW 5 43762963 intron probably benign
R4469:Fbxl5 UTSW 5 43768186 missense probably damaging 1.00
R4654:Fbxl5 UTSW 5 43765429 missense probably damaging 0.99
R5067:Fbxl5 UTSW 5 43758772 missense probably benign 0.00
R5093:Fbxl5 UTSW 5 43773554 missense probably damaging 1.00
R5696:Fbxl5 UTSW 5 43758840 missense possibly damaging 0.93
R5738:Fbxl5 UTSW 5 43762828 missense probably benign 0.30
R6029:Fbxl5 UTSW 5 43765404 missense probably damaging 0.96
R6185:Fbxl5 UTSW 5 43821552 missense probably benign 0.02
R6842:Fbxl5 UTSW 5 43773586 missense probably damaging 1.00
R7234:Fbxl5 UTSW 5 43758220 missense probably benign 0.08
R7563:Fbxl5 UTSW 5 43821549 missense probably benign 0.00
R7653:Fbxl5 UTSW 5 43758774 missense probably benign
R7842:Fbxl5 UTSW 5 43758603 missense probably damaging 1.00
R7860:Fbxl5 UTSW 5 43758676 missense probably benign 0.00
R8139:Fbxl5 UTSW 5 43758745 nonsense probably null
R8393:Fbxl5 UTSW 5 43768091 missense possibly damaging 0.94
RF012:Fbxl5 UTSW 5 43773505 missense probably damaging 1.00
X0065:Fbxl5 UTSW 5 43760798 missense probably damaging 1.00
Nature of Mutation
DNA sequencing using the SOLiD technique identified a T to A transversion at position 1804 of the Fbxl5 transcript in exon 9 of 11 total exons. Multiple transcripts of the Fbxl5 gene are displayed on Ensembl. The mutated nucleotide causes a methionine to lysine substitution at amino acid 568 of the encoded protein. The mutation has been confirmed by DNA sequencing using the Sanger method (Figure 1).
Protein Function and Prediction
The Fbxl5 gene encodes a 690 amino acid protein that contains an F-box domain at amino acids 202-248 and four leucine-rich repeats (LRRs) at residues 255-379, 384-409, 597-622, and 625-650. FBXL5 also has a hemerythrin-like region at amino acids1-159 that can act as an oxygen and iron sensor. FBXL5 is a component of a protein ligase complex that plays a central role in iron homeostasis by promoting the ubiquitination and subsequent degradation of IREB2/IRP2 (Uniprot Q8C2S5).
 
The M568K change is predicted to be possibly damaging by the PolyPhen program.
Posted On2010-03-11