Incidental Mutation 'IGL02376:Fmnl3'
| ID |
291130 |
| Institutional Source |
Australian Phenomics Network
(link to record)
|
| Gene Symbol |
Fmnl3
|
| Ensembl Gene |
ENSMUSG00000023008 |
| Gene Name |
formin-like 3 |
| Synonyms |
2700073B04Rik, Wbp3 |
| Accession Numbers |
|
| Essential gene? |
Possibly essential
(E-score: 0.706)
|
| Stock # |
IGL02376
|
| Quality Score |
|
|
Status
|
|
| Chromosome |
15 |
| Chromosomal Location |
99215106-99268363 bp(-) (GRCm39) |
| Type of Mutation |
missense |
| DNA Base Change (assembly) |
A to T
at 99216844 bp (GRCm39)
|
| Zygosity |
Heterozygous |
| Amino Acid Change |
Phenylalanine to Tyrosine
at position 1017
(F1017Y)
|
| Ref Sequence |
ENSEMBL: ENSMUSP00000085566
(fasta)
|
| Gene Model |
predicted gene model for transcript(s):
[ENSMUST00000023745]
[ENSMUST00000081224]
[ENSMUST00000088233]
[ENSMUST00000118287]
[ENSMUST00000120633]
[ENSMUST00000126955]
[ENSMUST00000145482]
[ENSMUST00000150636]
[ENSMUST00000136980]
|
| AlphaFold |
Q6ZPF4 |
| Predicted Effect |
probably benign
Transcript: ENSMUST00000023745
|
| SMART Domains |
Protein: ENSMUSP00000023745
Gene: ENSMUSG00000023007
| Domain | Start | End | E-Value | Type |
|---|
|
low complexity region
|
1 |
24 |
N/A |
INTRINSIC |
|
low complexity region
|
28 |
52 |
N/A |
INTRINSIC |
|
low complexity region
|
56 |
87 |
N/A |
INTRINSIC |
|
WW
|
93 |
125 |
7.6e-9 |
SMART |
|
WW
|
134 |
166 |
1.75e-8 |
SMART |
|
low complexity region
|
182 |
212 |
N/A |
INTRINSIC |
|
low complexity region
|
255 |
267 |
N/A |
INTRINSIC |
|
FF
|
276 |
330 |
2.36e-14 |
SMART |
|
FF
|
410 |
470 |
6.94e-3 |
SMART |
|
FF
|
490 |
550 |
1.41e0 |
SMART |
|
low complexity region
|
557 |
568 |
N/A |
INTRINSIC |
|
FF
|
626 |
682 |
3.41e-11 |
SMART |
|
low complexity region
|
693 |
776 |
N/A |
INTRINSIC |
|
low complexity region
|
777 |
796 |
N/A |
INTRINSIC |
|
low complexity region
|
809 |
825 |
N/A |
INTRINSIC |
|
| Predicted Effect |
probably benign
Transcript: ENSMUST00000081224
|
| SMART Domains |
Protein: ENSMUSP00000079984
Gene: ENSMUSG00000023008
| Domain | Start | End | E-Value | Type |
|---|
|
Drf_GBD
|
26 |
227 |
2.99e-88 |
SMART |
|
Drf_FH3
|
230 |
421 |
6.1e-71 |
SMART |
|
low complexity region
|
448 |
497 |
N/A |
INTRINSIC |
|
FH2
|
510 |
944 |
9.85e-141 |
SMART |
|
low complexity region
|
960 |
975 |
N/A |
INTRINSIC |
|
| Predicted Effect |
possibly damaging
Transcript: ENSMUST00000088233
AA Change: F1017Y
PolyPhen 2
Score 0.514 (Sensitivity: 0.88; Specificity: 0.90)
|
| SMART Domains |
Protein: ENSMUSP00000085566
Gene: ENSMUSG00000023008
AA Change: F1017Y
| Domain | Start | End | E-Value | Type |
|---|
|
Drf_GBD
|
26 |
278 |
3.91e-92 |
SMART |
|
Drf_FH3
|
281 |
472 |
6.1e-71 |
SMART |
|
low complexity region
|
499 |
548 |
N/A |
INTRINSIC |
|
FH2
|
561 |
995 |
9.85e-141 |
SMART |
|
| Predicted Effect |
probably benign
Transcript: ENSMUST00000118287
|
| SMART Domains |
Protein: ENSMUSP00000113282
Gene: ENSMUSG00000023007
| Domain | Start | End | E-Value | Type |
|---|
|
low complexity region
|
1 |
24 |
N/A |
INTRINSIC |
|
low complexity region
|
28 |
52 |
N/A |
INTRINSIC |
|
low complexity region
|
56 |
87 |
N/A |
INTRINSIC |
|
WW
|
93 |
125 |
7.6e-9 |
SMART |
|
WW
|
134 |
166 |
1.75e-8 |
SMART |
|
low complexity region
|
182 |
212 |
N/A |
INTRINSIC |
|
low complexity region
|
255 |
267 |
N/A |
INTRINSIC |
|
FF
|
276 |
330 |
2.36e-14 |
SMART |
|
FF
|
410 |
470 |
6.94e-3 |
SMART |
|
FF
|
490 |
550 |
1.41e0 |
SMART |
|
low complexity region
|
557 |
568 |
N/A |
INTRINSIC |
|
FF
|
626 |
682 |
3.41e-11 |
SMART |
|
low complexity region
|
694 |
777 |
N/A |
INTRINSIC |
|
low complexity region
|
778 |
797 |
N/A |
INTRINSIC |
|
low complexity region
|
810 |
826 |
N/A |
INTRINSIC |
|
low complexity region
|
845 |
866 |
N/A |
INTRINSIC |
|
| Predicted Effect |
probably benign
Transcript: ENSMUST00000120633
|
| SMART Domains |
Protein: ENSMUSP00000113094
Gene: ENSMUSG00000023008
| Domain | Start | End | E-Value | Type |
|---|
|
Drf_GBD
|
26 |
278 |
3.91e-92 |
SMART |
|
Drf_FH3
|
281 |
472 |
6.1e-71 |
SMART |
|
low complexity region
|
499 |
548 |
N/A |
INTRINSIC |
|
FH2
|
561 |
995 |
9.85e-141 |
SMART |
|
low complexity region
|
1011 |
1026 |
N/A |
INTRINSIC |
|
| Predicted Effect |
noncoding transcript
Transcript: ENSMUST00000124275
|
| Predicted Effect |
probably benign
Transcript: ENSMUST00000126955
|
| Predicted Effect |
noncoding transcript
Transcript: ENSMUST00000139330
|
| Predicted Effect |
noncoding transcript
Transcript: ENSMUST00000150641
|
| Predicted Effect |
noncoding transcript
Transcript: ENSMUST00000138036
|
| Predicted Effect |
noncoding transcript
Transcript: ENSMUST00000130575
|
| Predicted Effect |
noncoding transcript
Transcript: ENSMUST00000153692
|
| Predicted Effect |
probably benign
Transcript: ENSMUST00000145482
|
| SMART Domains |
Protein: ENSMUSP00000115869
Gene: ENSMUSG00000023007
| Domain | Start | End | E-Value | Type |
|---|
|
low complexity region
|
1 |
24 |
N/A |
INTRINSIC |
|
low complexity region
|
28 |
52 |
N/A |
INTRINSIC |
|
low complexity region
|
56 |
87 |
N/A |
INTRINSIC |
|
WW
|
93 |
125 |
7.6e-9 |
SMART |
|
WW
|
134 |
166 |
1.75e-8 |
SMART |
|
low complexity region
|
182 |
212 |
N/A |
INTRINSIC |
|
low complexity region
|
255 |
267 |
N/A |
INTRINSIC |
|
FF
|
276 |
330 |
2.36e-14 |
SMART |
|
FF
|
410 |
470 |
6.94e-3 |
SMART |
|
FF
|
490 |
550 |
1.41e0 |
SMART |
|
low complexity region
|
557 |
568 |
N/A |
INTRINSIC |
|
FF
|
626 |
682 |
3.41e-11 |
SMART |
|
low complexity region
|
693 |
708 |
N/A |
INTRINSIC |
|
low complexity region
|
719 |
780 |
N/A |
INTRINSIC |
|
low complexity region
|
781 |
800 |
N/A |
INTRINSIC |
|
low complexity region
|
813 |
829 |
N/A |
INTRINSIC |
|
low complexity region
|
848 |
869 |
N/A |
INTRINSIC |
|
| Predicted Effect |
probably benign
Transcript: ENSMUST00000150636
|
| SMART Domains |
Protein: ENSMUSP00000119295
Gene: ENSMUSG00000023007
| Domain | Start | End | E-Value | Type |
|---|
|
Pfam:FF
|
1 |
52 |
1.2e-7 |
PFAM |
|
low complexity region
|
67 |
82 |
N/A |
INTRINSIC |
|
| Predicted Effect |
probably benign
Transcript: ENSMUST00000134034
|
| SMART Domains |
Protein: ENSMUSP00000120030
Gene: ENSMUSG00000023007
| Domain | Start | End | E-Value | Type |
|---|
|
Pfam:FF
|
11 |
62 |
2.2e-7 |
PFAM |
|
low complexity region
|
77 |
92 |
N/A |
INTRINSIC |
|
low complexity region
|
103 |
164 |
N/A |
INTRINSIC |
|
low complexity region
|
165 |
184 |
N/A |
INTRINSIC |
|
low complexity region
|
197 |
213 |
N/A |
INTRINSIC |
|
low complexity region
|
232 |
253 |
N/A |
INTRINSIC |
|
| Predicted Effect |
probably benign
Transcript: ENSMUST00000136980
|
| SMART Domains |
Protein: ENSMUSP00000122649
Gene: ENSMUSG00000023007
| Domain | Start | End | E-Value | Type |
|---|
|
low complexity region
|
1 |
18 |
N/A |
INTRINSIC |
|
low complexity region
|
22 |
46 |
N/A |
INTRINSIC |
|
low complexity region
|
50 |
81 |
N/A |
INTRINSIC |
|
WW
|
87 |
119 |
7.6e-9 |
SMART |
|
WW
|
128 |
160 |
1.75e-8 |
SMART |
|
low complexity region
|
176 |
206 |
N/A |
INTRINSIC |
|
low complexity region
|
249 |
261 |
N/A |
INTRINSIC |
|
FF
|
270 |
324 |
2.36e-14 |
SMART |
|
FF
|
404 |
464 |
6.94e-3 |
SMART |
|
FF
|
484 |
544 |
1.41e0 |
SMART |
|
FF
|
613 |
669 |
3.41e-11 |
SMART |
|
low complexity region
|
681 |
764 |
N/A |
INTRINSIC |
|
low complexity region
|
765 |
784 |
N/A |
INTRINSIC |
|
low complexity region
|
797 |
813 |
N/A |
INTRINSIC |
|
low complexity region
|
832 |
853 |
N/A |
INTRINSIC |
|
| Coding Region Coverage |
|
| Validation Efficiency |
|
| MGI Phenotype |
FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] The protein encoded by this gene contains a formin homology 2 domain and has high sequence identity to the mouse Wbp3 protein. Two alternative transcripts encoding different isoforms have been described. [provided by RefSeq, Jul 2008]
|
| Allele List at MGI |
All alleles(2) : Targeted, other(2) |
| Other mutations in this stock |
Total: 56 list
| Gene | Ref | Var | Chr/Loc | Mutation | Predicted Effect | Zygosity |
|---|
| Abtb1 |
A |
G |
6: 88,815,466 (GRCm39) |
|
probably benign |
Het |
| Adcy3 |
G |
A |
12: 4,251,031 (GRCm39) |
E597K |
possibly damaging |
Het |
| Adcy9 |
A |
G |
16: 4,236,544 (GRCm39) |
V289A |
probably benign |
Het |
| Akr1d1 |
A |
T |
6: 37,507,220 (GRCm39) |
D14V |
probably damaging |
Het |
| Ankrd12 |
T |
C |
17: 66,349,524 (GRCm39) |
|
probably benign |
Het |
| Arap3 |
T |
C |
18: 38,111,506 (GRCm39) |
T1137A |
possibly damaging |
Het |
| Arhgef4 |
A |
T |
1: 34,845,140 (GRCm39) |
Q77L |
probably damaging |
Het |
| Arhgef7 |
A |
G |
8: 11,867,735 (GRCm39) |
T444A |
probably damaging |
Het |
| Arr3 |
A |
C |
X: 99,658,281 (GRCm39) |
K281Q |
probably damaging |
Het |
| Arrdc2 |
A |
T |
8: 71,291,623 (GRCm39) |
I114N |
probably benign |
Het |
| Atg2b |
A |
T |
12: 105,611,727 (GRCm39) |
F1217Y |
probably damaging |
Het |
| C1qtnf1 |
A |
C |
11: 118,338,894 (GRCm39) |
Y188S |
probably benign |
Het |
| Cbx6 |
C |
A |
15: 79,712,500 (GRCm39) |
R309L |
probably benign |
Het |
| Cfap410 |
A |
G |
10: 77,820,388 (GRCm39) |
|
probably benign |
Het |
| Chrna9 |
T |
C |
5: 66,128,502 (GRCm39) |
S237P |
probably damaging |
Het |
| Dapk1 |
G |
A |
13: 60,844,208 (GRCm39) |
V76I |
probably benign |
Het |
| Elk4 |
T |
A |
1: 131,942,288 (GRCm39) |
N53K |
probably benign |
Het |
| Epha7 |
A |
C |
4: 28,951,287 (GRCm39) |
T799P |
probably damaging |
Het |
| Exosc2 |
G |
A |
2: 31,569,887 (GRCm39) |
V233M |
possibly damaging |
Het |
| Fam217b |
A |
G |
2: 178,059,366 (GRCm39) |
D3G |
probably benign |
Het |
| Farp1 |
T |
A |
14: 121,510,268 (GRCm39) |
N755K |
probably damaging |
Het |
| Fer |
A |
G |
17: 64,241,341 (GRCm39) |
E327G |
possibly damaging |
Het |
| Gabbr2 |
A |
C |
4: 46,684,300 (GRCm39) |
I658S |
probably damaging |
Het |
| Gemin2 |
A |
G |
12: 59,068,506 (GRCm39) |
D195G |
probably benign |
Het |
| Gtf3c1 |
T |
A |
7: 125,268,168 (GRCm39) |
Y875F |
probably benign |
Het |
| Hnrnpr |
G |
A |
4: 136,046,766 (GRCm39) |
G149D |
probably damaging |
Het |
| Krt74 |
A |
C |
15: 101,662,938 (GRCm39) |
|
noncoding transcript |
Het |
| Ltf |
A |
G |
9: 110,858,692 (GRCm39) |
D480G |
probably benign |
Het |
| Map1b |
A |
G |
13: 99,572,103 (GRCm39) |
L206P |
probably damaging |
Het |
| Meis1 |
T |
C |
11: 18,831,752 (GRCm39) |
M429V |
probably benign |
Het |
| Myh4 |
C |
A |
11: 67,136,554 (GRCm39) |
T444N |
probably benign |
Het |
| Nckap1l |
A |
T |
15: 103,379,658 (GRCm39) |
Y315F |
possibly damaging |
Het |
| Ndst3 |
A |
G |
3: 123,350,447 (GRCm39) |
I646T |
probably damaging |
Het |
| Ndufv1 |
T |
C |
19: 4,057,823 (GRCm39) |
|
probably null |
Het |
| Ogdhl |
T |
C |
14: 32,065,275 (GRCm39) |
Y710H |
probably damaging |
Het |
| Or4c52 |
A |
G |
2: 89,845,804 (GRCm39) |
I177V |
probably benign |
Het |
| Otud7b |
A |
G |
3: 96,062,354 (GRCm39) |
K531R |
possibly damaging |
Het |
| Pax3 |
T |
C |
1: 78,108,929 (GRCm39) |
Y243C |
probably damaging |
Het |
| Pde1a |
A |
G |
2: 79,705,567 (GRCm39) |
|
probably benign |
Het |
| Pik3cb |
C |
T |
9: 98,934,405 (GRCm39) |
M813I |
probably benign |
Het |
| Prss42 |
A |
T |
9: 110,632,175 (GRCm39) |
D302V |
possibly damaging |
Het |
| Rad52 |
T |
C |
6: 119,892,191 (GRCm39) |
|
probably benign |
Het |
| Reln |
A |
T |
5: 22,285,789 (GRCm39) |
Y393* |
probably null |
Het |
| Rhbdd3 |
T |
C |
11: 5,053,192 (GRCm39) |
|
probably benign |
Het |
| Sbf2 |
C |
T |
7: 110,062,163 (GRCm39) |
G138D |
probably damaging |
Het |
| Slco1a1 |
A |
T |
6: 141,870,060 (GRCm39) |
|
probably null |
Het |
| Smg9 |
A |
G |
7: 24,114,455 (GRCm39) |
I265V |
probably benign |
Het |
| Sppl2b |
G |
T |
10: 80,703,432 (GRCm39) |
E565* |
probably null |
Het |
| Stx6 |
T |
A |
1: 155,077,725 (GRCm39) |
V244D |
probably benign |
Het |
| Tle4 |
T |
C |
19: 14,571,768 (GRCm39) |
N78D |
probably damaging |
Het |
| Tmcc3 |
A |
G |
10: 94,414,429 (GRCm39) |
I44V |
possibly damaging |
Het |
| Tnnt3 |
C |
T |
7: 142,066,295 (GRCm39) |
T220I |
possibly damaging |
Het |
| Ttn |
A |
T |
2: 76,557,811 (GRCm39) |
D29798E |
possibly damaging |
Het |
| Vtcn1 |
A |
T |
3: 100,799,981 (GRCm39) |
M281L |
probably benign |
Het |
| Zfp595 |
T |
C |
13: 67,464,514 (GRCm39) |
K586R |
possibly damaging |
Het |
| Zfta |
C |
T |
19: 7,399,741 (GRCm39) |
P496L |
probably damaging |
Het |
|
| Other mutations in Fmnl3 |
| Allele | Source | Chr | Coord | Type | Predicted Effect | PPH Score |
|---|
|
IGL00648:Fmnl3
|
APN |
15 |
99,220,551 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL00672:Fmnl3
|
APN |
15 |
99,223,562 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL00727:Fmnl3
|
APN |
15 |
99,220,551 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL00754:Fmnl3
|
APN |
15 |
99,220,551 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL00927:Fmnl3
|
APN |
15 |
99,235,509 (GRCm39) |
critical splice donor site |
probably null |
|
|
IGL02607:Fmnl3
|
APN |
15 |
99,222,653 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL03323:Fmnl3
|
APN |
15 |
99,219,162 (GRCm39) |
missense |
probably damaging |
1.00 |
|
C9142:Fmnl3
|
UTSW |
15 |
99,235,508 (GRCm39) |
splice site |
probably null |
|
|
PIT4280001:Fmnl3
|
UTSW |
15 |
99,219,134 (GRCm39) |
critical splice donor site |
probably null |
|
|
R0003:Fmnl3
|
UTSW |
15 |
99,219,013 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R0003:Fmnl3
|
UTSW |
15 |
99,219,013 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R0116:Fmnl3
|
UTSW |
15 |
99,220,619 (GRCm39) |
splice site |
probably benign |
|
|
R0117:Fmnl3
|
UTSW |
15 |
99,220,619 (GRCm39) |
splice site |
probably benign |
|
|
R0137:Fmnl3
|
UTSW |
15 |
99,220,619 (GRCm39) |
splice site |
probably benign |
|
|
R0138:Fmnl3
|
UTSW |
15 |
99,220,619 (GRCm39) |
splice site |
probably benign |
|
|
R0701:Fmnl3
|
UTSW |
15 |
99,219,188 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R2338:Fmnl3
|
UTSW |
15 |
99,268,108 (GRCm39) |
missense |
probably benign |
0.01 |
|
R3729:Fmnl3
|
UTSW |
15 |
99,219,745 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R4707:Fmnl3
|
UTSW |
15 |
99,221,362 (GRCm39) |
missense |
probably benign |
0.00 |
|
R5346:Fmnl3
|
UTSW |
15 |
99,229,871 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R5655:Fmnl3
|
UTSW |
15 |
99,219,743 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R5916:Fmnl3
|
UTSW |
15 |
99,219,709 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R5951:Fmnl3
|
UTSW |
15 |
99,223,791 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R5954:Fmnl3
|
UTSW |
15 |
99,223,791 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R5957:Fmnl3
|
UTSW |
15 |
99,223,791 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R6334:Fmnl3
|
UTSW |
15 |
99,235,534 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R6891:Fmnl3
|
UTSW |
15 |
99,223,754 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R7182:Fmnl3
|
UTSW |
15 |
99,219,663 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R7423:Fmnl3
|
UTSW |
15 |
99,227,281 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R7952:Fmnl3
|
UTSW |
15 |
99,220,518 (GRCm39) |
missense |
probably damaging |
0.97 |
|
R7977:Fmnl3
|
UTSW |
15 |
99,225,979 (GRCm39) |
missense |
possibly damaging |
0.89 |
|
R7987:Fmnl3
|
UTSW |
15 |
99,225,979 (GRCm39) |
missense |
possibly damaging |
0.89 |
|
R8749:Fmnl3
|
UTSW |
15 |
99,219,322 (GRCm39) |
missense |
possibly damaging |
0.88 |
|
R9397:Fmnl3
|
UTSW |
15 |
99,225,938 (GRCm39) |
critical splice donor site |
probably null |
|
|
R9598:Fmnl3
|
UTSW |
15 |
99,223,210 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0009:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0010:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0011:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0012:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0014:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0017:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0021:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0023:Fmnl3
|
UTSW |
15 |
99,223,165 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0023:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0028:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0033:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0060:Fmnl3
|
UTSW |
15 |
99,217,919 (GRCm39) |
missense |
possibly damaging |
0.69 |
|
X0064:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
X0067:Fmnl3
|
UTSW |
15 |
99,220,208 (GRCm39) |
missense |
probably damaging |
1.00 |
|
| Posted On |
2015-04-16 |
Incidental Mutation