eIF2γ mutation that disrupts eIF2 complex integrity links intellectual disability to impaired translation initiation.
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eIF2γ mutation that disrupts eIF2 complex integrity links intellectual disability to impaired translation initiation. / Borck, Guntram; Shin, Byung-Sik; Stiller, Barbara; Mimouni-Bloch, Aviva; Thiele, Holger; Kim, Joo-Ran; Thakur, Meghna; Skinner, Cindy; Aschenbach, Lara; Smirin-Yosef, Pola; Har-Zahav, Adi; Nürnberg, Gudrun; Altmüller, Janine; Frommolt, Peter; Hofmann, Kay; Konen, Osnat; Nürnberg, Peter; Munnich, Arnold; Schwartz, Charles E; Gothelf, Doron; Colleaux, Laurence; Dever, Thomas E; Kubisch, Christian; Basel-Vanagaite, Lina.
In: MOL CELL, Vol. 48, No. 4, 4, 2012, p. 641-646.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - eIF2γ mutation that disrupts eIF2 complex integrity links intellectual disability to impaired translation initiation.
AU - Borck, Guntram
AU - Shin, Byung-Sik
AU - Stiller, Barbara
AU - Mimouni-Bloch, Aviva
AU - Thiele, Holger
AU - Kim, Joo-Ran
AU - Thakur, Meghna
AU - Skinner, Cindy
AU - Aschenbach, Lara
AU - Smirin-Yosef, Pola
AU - Har-Zahav, Adi
AU - Nürnberg, Gudrun
AU - Altmüller, Janine
AU - Frommolt, Peter
AU - Hofmann, Kay
AU - Konen, Osnat
AU - Nürnberg, Peter
AU - Munnich, Arnold
AU - Schwartz, Charles E
AU - Gothelf, Doron
AU - Colleaux, Laurence
AU - Dever, Thomas E
AU - Kubisch, Christian
AU - Basel-Vanagaite, Lina
PY - 2012
Y1 - 2012
N2 - Together with GTP and initiator methionyl-tRNA, translation initiation factor eIF2 forms a ternary complex that binds the 40S ribosome and then scans an mRNA to select the AUG start codon for protein synthesis. Here, we show that a human X-chromosomal neurological disorder characterized by intellectual disability and microcephaly is caused by a missense mutation in eIF2? (encoded by EIF2S3), the core subunit of the heterotrimeric eIF2 complex. Biochemical studies of human cells overexpressing the eIF2? mutant and of yeast eIF2? with the analogous mutation revealed a defect in binding the eIF2? subunit to eIF2?. Consistent with this loss of eIF2 integrity, the yeast eIF2? mutation impaired translation start codon selection and eIF2 function in vivo in a manner that was suppressed by overexpressing eIF2?. These findings directly link intellectual disability to impaired translation initiation, and provide a mechanistic basis for the human disease due to partial loss of eIF2 function.
AB - Together with GTP and initiator methionyl-tRNA, translation initiation factor eIF2 forms a ternary complex that binds the 40S ribosome and then scans an mRNA to select the AUG start codon for protein synthesis. Here, we show that a human X-chromosomal neurological disorder characterized by intellectual disability and microcephaly is caused by a missense mutation in eIF2? (encoded by EIF2S3), the core subunit of the heterotrimeric eIF2 complex. Biochemical studies of human cells overexpressing the eIF2? mutant and of yeast eIF2? with the analogous mutation revealed a defect in binding the eIF2? subunit to eIF2?. Consistent with this loss of eIF2 integrity, the yeast eIF2? mutation impaired translation start codon selection and eIF2 function in vivo in a manner that was suppressed by overexpressing eIF2?. These findings directly link intellectual disability to impaired translation initiation, and provide a mechanistic basis for the human disease due to partial loss of eIF2 function.
KW - Humans
KW - Amino Acid Sequence
KW - Base Sequence
KW - Models, Molecular
KW - Mutation, Missense
KW - Intellectual Disability/genetics
KW - Eukaryotic Initiation Factor-2/chemistry/genetics/metabolism
KW - Peptide Chain Initiation, Translational/genetics
KW - Saccharomyces cerevisiae/genetics
KW - Saccharomyces cerevisiae Proteins/chemistry/genetics/metabolism
KW - Humans
KW - Amino Acid Sequence
KW - Base Sequence
KW - Models, Molecular
KW - Mutation, Missense
KW - Intellectual Disability/genetics
KW - Eukaryotic Initiation Factor-2/chemistry/genetics/metabolism
KW - Peptide Chain Initiation, Translational/genetics
KW - Saccharomyces cerevisiae/genetics
KW - Saccharomyces cerevisiae Proteins/chemistry/genetics/metabolism
M3 - SCORING: Journal article
VL - 48
SP - 641
EP - 646
JO - MOL CELL
JF - MOL CELL
SN - 1097-2765
IS - 4
M1 - 4
ER -