Incidental Mutation 'P0016:Klb'
| ID |
7619 |
| Institutional Source |
Beutler Lab
|
| Gene Symbol |
Klb
|
| Ensembl Gene |
ENSMUSG00000029195 |
| Gene Name |
klotho beta |
| Synonyms |
betaKlotho |
| MMRRC Submission |
038269-MU
|
| Accession Numbers |
|
| Essential gene? |
Probably essential
(E-score: 0.912)
|
| Stock # |
P0016 (G1)
|
| Quality Score |
|
|
Status
|
Validated
|
| Chromosome |
5 |
| Chromosomal Location |
65505657-65541350 bp(+) (GRCm39) |
| Type of Mutation |
nonsense |
| DNA Base Change (assembly) |
G to A
at 65537266 bp (GRCm39)
|
| Zygosity |
Heterozygous |
| Amino Acid Change |
Tryptophan to Stop codon
at position 865
(W865*)
|
| Ref Sequence |
ENSEMBL: ENSMUSP00000031096
(fasta)
|
| Gene Model |
predicted gene model for transcript(s):
[ENSMUST00000031096]
[ENSMUST00000205084]
|
| AlphaFold |
Q99N32 |
| Predicted Effect |
probably null
Transcript: ENSMUST00000031096
AA Change: W865*
|
| SMART Domains |
Protein: ENSMUSP00000031096
Gene: ENSMUSG00000029195
AA Change: W865*
| Domain | Start | End | E-Value | Type |
|---|
|
Pfam:Glyco_hydro_1
|
77 |
385 |
8.8e-96 |
PFAM |
|
Pfam:Glyco_hydro_1
|
374 |
506 |
1.7e-31 |
PFAM |
|
Pfam:Glyco_hydro_1
|
515 |
965 |
6.3e-80 |
PFAM |
|
transmembrane domain
|
995 |
1017 |
N/A |
INTRINSIC |
|
| Predicted Effect |
probably benign
Transcript: ENSMUST00000205084
|
| SMART Domains |
Protein: ENSMUSP00000145091
Gene: ENSMUSG00000029195
| Domain | Start | End | E-Value | Type |
|---|
|
Pfam:Glyco_hydro_1
|
77 |
360 |
8.6e-94 |
PFAM |
|
| Meta Mutation Damage Score |
0.9559 |
| Coding Region Coverage |
- 1x: 85.6%
- 3x: 81.0%
- 10x: 66.8%
- 20x: 50.1%
|
| Validation Efficiency |
96% (97/101) |
| MGI Phenotype |
PHENOTYPE: Homozygous null mice display increased bile acid synthesis and excretion, resistance to gallstone formation, and slightly decreased body weight. Mice homozygous for a knock-out allele or a conditional allele activated in adipose tissue exhibit resistanceto FGF21-induced metabolic disruptions. [provided by MGI curators]
|
| Allele List at MGI |
All alleles(5) : Targeted(2) Gene trapped(3)
|
| Other mutations in this stock |
Total: 18 list
| Gene | Ref | Var | Chr/Loc | Mutation | Predicted Effect | Zygosity |
|---|
| 1700123K08Rik |
A |
T |
5: 138,561,200 (GRCm39) |
L154* |
probably null |
Het |
| 4930432E11Rik |
T |
C |
7: 29,262,537 (GRCm39) |
|
noncoding transcript |
Het |
| Arap3 |
T |
A |
18: 38,117,401 (GRCm39) |
T892S |
probably benign |
Het |
| Ctnnd2 |
G |
A |
15: 30,967,084 (GRCm39) |
V987I |
probably benign |
Het |
| Dennd6b |
T |
C |
15: 89,071,180 (GRCm39) |
I351V |
probably benign |
Het |
| Kif27 |
G |
A |
13: 58,451,266 (GRCm39) |
Q1021* |
probably null |
Het |
| Mbd1 |
C |
T |
18: 74,407,609 (GRCm39) |
R130* |
probably null |
Het |
| Mroh7 |
T |
A |
4: 106,565,054 (GRCm39) |
|
probably null |
Het |
| Myo16 |
C |
T |
8: 10,450,596 (GRCm39) |
|
probably benign |
Het |
| Rbm22 |
T |
A |
18: 60,703,842 (GRCm39) |
|
probably benign |
Het |
| Rnaseh2a |
C |
G |
8: 85,686,429 (GRCm39) |
D206H |
probably damaging |
Het |
| Slain1 |
A |
G |
14: 103,923,110 (GRCm39) |
T187A |
probably benign |
Het |
| Slamf6 |
A |
G |
1: 171,764,068 (GRCm39) |
T154A |
probably damaging |
Het |
| Traip |
A |
G |
9: 107,845,855 (GRCm39) |
D316G |
possibly damaging |
Het |
| Ttn |
T |
C |
2: 76,641,527 (GRCm39) |
D5196G |
probably damaging |
Het |
| Ubr5 |
C |
T |
15: 38,000,822 (GRCm39) |
V1569M |
probably damaging |
Het |
| Zfp750 |
T |
A |
11: 121,404,804 (GRCm39) |
K24* |
probably null |
Het |
| Zfp799 |
T |
C |
17: 33,038,331 (GRCm39) |
E645G |
possibly damaging |
Het |
|
| Other mutations in Klb |
| Allele | Source | Chr | Coord | Type | Predicted Effect | PPH Score |
|---|
|
IGL00425:Klb
|
APN |
5 |
65,529,717 (GRCm39) |
missense |
possibly damaging |
0.90 |
|
IGL00821:Klb
|
APN |
5 |
65,529,492 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL01082:Klb
|
APN |
5 |
65,533,283 (GRCm39) |
missense |
possibly damaging |
0.71 |
|
IGL01637:Klb
|
APN |
5 |
65,533,022 (GRCm39) |
critical splice acceptor site |
probably null |
|
|
IGL02098:Klb
|
APN |
5 |
65,537,228 (GRCm39) |
missense |
probably benign |
0.21 |
|
IGL03113:Klb
|
APN |
5 |
65,540,813 (GRCm39) |
missense |
probably benign |
0.00 |
|
1mM(1):Klb
|
UTSW |
5 |
65,505,993 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R0268:Klb
|
UTSW |
5 |
65,506,180 (GRCm39) |
missense |
probably benign |
0.02 |
|
R0383:Klb
|
UTSW |
5 |
65,529,842 (GRCm39) |
splice site |
probably null |
|
|
R0676:Klb
|
UTSW |
5 |
65,536,398 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R0735:Klb
|
UTSW |
5 |
65,537,070 (GRCm39) |
missense |
probably benign |
|
|
R0972:Klb
|
UTSW |
5 |
65,506,089 (GRCm39) |
missense |
possibly damaging |
0.70 |
|
R1051:Klb
|
UTSW |
5 |
65,536,670 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R1168:Klb
|
UTSW |
5 |
65,536,317 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R1372:Klb
|
UTSW |
5 |
65,506,089 (GRCm39) |
missense |
possibly damaging |
0.70 |
|
R1403:Klb
|
UTSW |
5 |
65,506,089 (GRCm39) |
missense |
possibly damaging |
0.70 |
|
R1403:Klb
|
UTSW |
5 |
65,506,089 (GRCm39) |
missense |
possibly damaging |
0.70 |
|
R1446:Klb
|
UTSW |
5 |
65,506,338 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R1696:Klb
|
UTSW |
5 |
65,506,089 (GRCm39) |
missense |
possibly damaging |
0.70 |
|
R1743:Klb
|
UTSW |
5 |
65,533,204 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R1801:Klb
|
UTSW |
5 |
65,506,578 (GRCm39) |
missense |
probably null |
0.90 |
|
R1804:Klb
|
UTSW |
5 |
65,537,196 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R1848:Klb
|
UTSW |
5 |
65,506,180 (GRCm39) |
missense |
probably benign |
0.02 |
|
R1967:Klb
|
UTSW |
5 |
65,529,417 (GRCm39) |
missense |
probably damaging |
0.98 |
|
R3420:Klb
|
UTSW |
5 |
65,529,485 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R4397:Klb
|
UTSW |
5 |
65,537,382 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R4490:Klb
|
UTSW |
5 |
65,533,137 (GRCm39) |
missense |
probably benign |
0.02 |
|
R4491:Klb
|
UTSW |
5 |
65,533,137 (GRCm39) |
missense |
probably benign |
0.02 |
|
R4547:Klb
|
UTSW |
5 |
65,537,271 (GRCm39) |
missense |
probably benign |
0.00 |
|
R4878:Klb
|
UTSW |
5 |
65,505,833 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R5269:Klb
|
UTSW |
5 |
65,506,140 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R5418:Klb
|
UTSW |
5 |
65,540,813 (GRCm39) |
missense |
probably benign |
0.00 |
|
R5453:Klb
|
UTSW |
5 |
65,540,728 (GRCm39) |
missense |
probably benign |
0.08 |
|
R5541:Klb
|
UTSW |
5 |
65,536,577 (GRCm39) |
missense |
probably benign |
0.27 |
|
R5672:Klb
|
UTSW |
5 |
65,537,292 (GRCm39) |
missense |
possibly damaging |
0.82 |
|
R5841:Klb
|
UTSW |
5 |
65,536,667 (GRCm39) |
nonsense |
probably null |
|
|
R6088:Klb
|
UTSW |
5 |
65,506,356 (GRCm39) |
missense |
probably benign |
0.07 |
|
R6807:Klb
|
UTSW |
5 |
65,536,877 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R6955:Klb
|
UTSW |
5 |
65,536,431 (GRCm39) |
nonsense |
probably null |
|
|
R7068:Klb
|
UTSW |
5 |
65,536,683 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R7284:Klb
|
UTSW |
5 |
65,540,821 (GRCm39) |
missense |
probably benign |
0.01 |
|
R7322:Klb
|
UTSW |
5 |
65,540,707 (GRCm39) |
missense |
probably benign |
0.44 |
|
R7346:Klb
|
UTSW |
5 |
65,505,974 (GRCm39) |
nonsense |
probably null |
|
|
R7366:Klb
|
UTSW |
5 |
65,529,774 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R8134:Klb
|
UTSW |
5 |
65,540,958 (GRCm39) |
missense |
probably benign |
0.00 |
|
R8243:Klb
|
UTSW |
5 |
65,536,338 (GRCm39) |
missense |
possibly damaging |
0.65 |
|
R8409:Klb
|
UTSW |
5 |
65,536,878 (GRCm39) |
missense |
probably damaging |
0.96 |
|
R8971:Klb
|
UTSW |
5 |
65,533,026 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R9193:Klb
|
UTSW |
5 |
65,529,368 (GRCm39) |
missense |
possibly damaging |
0.63 |
|
R9305:Klb
|
UTSW |
5 |
65,505,988 (GRCm39) |
nonsense |
probably null |
|
|
R9390:Klb
|
UTSW |
5 |
65,533,044 (GRCm39) |
missense |
possibly damaging |
0.50 |
|
R9531:Klb
|
UTSW |
5 |
65,540,948 (GRCm39) |
missense |
|
|
|
R9768:Klb
|
UTSW |
5 |
65,537,373 (GRCm39) |
missense |
probably damaging |
1.00 |
|
Z1177:Klb
|
UTSW |
5 |
65,506,084 (GRCm39) |
missense |
probably damaging |
1.00 |
|
| Protein Function and Prediction |
The Klb gene encodes a 1043 amino acid single-pass type III membrane protein that contributes to the transcriptional repression of cholesterol 7-alpha-hydroxylase (CYP7A1), the rate-limiting enzyme in bile acid synthesis.Beta-Klotho is a member of the Klotho family of proteins and functions as a cofactor in FGF21 signaling in the process of glucose and lipid uptake in adipocytes (1). Klb contains an N-terminal signal sequence, followed by 2 tandemly repeated glycosidase-like domains (residues 77-506 and 515-965), a C-terminal transmembrane domain, and a short cytoplasmic tail. The protein is unlikely to have glycosidase activity as it lacks 2 key glutamates in the predicted active centers of the glycosidase-like domains (Uniprot Q99N32).
|
| Expression/Localization |
Northern blot analysis showed that Klb is predominantly expressed in liver and pancreas, with lower levels in skin and weak expression in stomach, skeletal muscle, small intestine, and lung. In mouse embryos, Klb expression became detectable at day 11 and increased in intensity as development progressed. In situ hybridization of mouse embryos revealed strong Klb expression in yolk sac, gut, brown and white adipose tissue, liver, and pancreas (2).
|
| Background |
Klbtm1Yin/tm1Yin; MGI:3587748
involves: C57BL/6 * CBA
Homozygous null mice are viable, fertile, and appeared grossly normal, but display increased bile acid synthesis and excretion, resistance to gallstone formation, and slightly decreased body weight (3).
|
| References |
1. Ogawa, Y., Kurosu, H., Yamamoto, M., Nandi, A., Rosenblatt, K. P., Goetz, R., Eliseenkova, A. V., Mohammadi, M., and Kuro-o, M. (2007) BetaKlotho is Required for Metabolic Activity of Fibroblast Growth Factor 21. Proc Natl Acad Sci U S A. 104, 7432-7437.
2. Ito, S., Kinoshita, S., Shiraishi, N., Nakagawa, S., Sekine, S., Fujimori, T., and Nabeshima, Y. I. (2000) Molecular Cloning and Expression Analyses of Mouse Betaklotho, which Encodes a Novel Klotho Family Protein. Mech Dev. 98, 115-119.
3. Ito, S., Fujimori, T., Furuya, A., Satoh, J., Nabeshima, Y., and Nabeshima, Y. (2005) Impaired Negative Feedback Suppression of Bile Acid Synthesis in Mice Lacking betaKlotho. J Clin Invest. 115, 2202-2208. |
| Posted On |
2012-10-05 |
| Science Writer |
Anne Murray |
Incidental Mutation