Translation initiation factor 3 / Translation initiation factor 3, N-terminal / Translation initiation factor 3 (IF-3), N-terminal domain superfamily / Translation initiation factor 3 (IF-3), C-terminal domain superfamily / Translation initiation factor IF-3, N-terminal domain / Coiled-coil-helix-coiled-coil-helix domain-containing protein 1 / 28S ribosomal protein S26 / Mitochondrial ribosome subunit S26 / Cysteine alpha-hairpin motif superfamily / 28S ribosomal protein S27, mitochondrial ...Translation initiation factor 3 / Translation initiation factor 3, N-terminal / Translation initiation factor 3 (IF-3), N-terminal domain superfamily / Translation initiation factor 3 (IF-3), C-terminal domain superfamily / Translation initiation factor IF-3, N-terminal domain / Coiled-coil-helix-coiled-coil-helix domain-containing protein 1 / 28S ribosomal protein S26 / Mitochondrial ribosome subunit S26 / Cysteine alpha-hairpin motif superfamily / 28S ribosomal protein S27, mitochondrial / MRPS27/PTCD2 / : / Mitochondrial 28S ribosomal protein S27 / Ribosomal protein S22, mitochondrial / Ribosomal protein S23, mitochondrial / Ribosomal protein S23/S25, mitochondrial / Mitochondrial 28S ribosomal protein S31 / Mitochondrial 28S ribosomal protein S22 / Mitochondrial ribosomal protein S23 / Mitochondrial 28S ribosomal protein S31 / Ribosomal protein S29, mitochondrial / Ribosomal protein S28, mitochondrial / 28S ribosomal protein S10, mitochondrial / Mitochondrial ribosomal protein MRP-S35 / 28S ribosomal protein S24, mitochondrial / Mitochondrial 28S ribosomal protein S34 / Pentatricopeptide repeat domain-containing protein 3 / 28S ribosomal protein S17, mitochondrial / 28S ribosomal protein S18b, mitochondrial / : / Mitochondrial ribosome subunit S24 / Mitochondrial 28S ribosomal protein S34 / Small ribosomal subunit protein uS5m, N-terminal / 28S ribosomal protein S25, mitochondrial / Pentatricopeptide repeat domain / Ribosomal protein S27/S33, mitochondrial / Ribosomal protein S24/S35, mitochondrial / Mitochondrial ribosomal subunit S27 / Ribosomal protein S24/S35, mitochondrial, conserved domain / Mitochondrial ribosomal subunit protein / Pentatricopeptide (PPR) repeat profile. / Ribosomal protein S23/S29, mitochondrial / Mitochondrial ribosomal death-associated protein 3 / Pentatricopeptide repeat / Mitochondrial mRNA-processing protein COX24, C-terminal / Mitochondrial mRNA-processing protein COX24, C-terminal / Mitochondrial domain of unknown function (DUF1713) / CHCH / CHCH domain / Coiled coil-helix-coiled coil-helix (CHCH) domain profile. / Ribosomal protein/NADH dehydrogenase domain / Mitochondrial ribosomal protein L51 / S25 / CI-B8 domain / Mitochondrial ribosomal protein L51 / S25 / CI-B8 domain / Ribosomal protein S21 superfamily / Ribosomal protein S21 / Ribosomal protein S21 / Ribosomal protein S12, bacterial-type / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal protein S18, conserved site / Ribosomal protein S18 signature. / Ribosomal protein S16 / Ribosomal protein S16 / Ribosomal protein S16 domain superfamily / Ribosomal protein S15, bacterial-type / Ribosomal protein S6 / Ribosomal protein S6 / Ribosomal protein S6 superfamily / Translation elongation factor EF1B/ribosomal protein S6 / Ribosomal protein S18 / Ribosomal protein S18 / Ribosomal protein S18 superfamily / Ribosomal protein S12 signature. / Ribosomal protein S2 signature 1. / Ribosomal protein S12/S23 / Ribosomal protein S5, N-terminal, conserved site / Ribosomal protein S5 signature. / Ribosomal protein S2, conserved site / Ribosomal protein S2 / Ribosomal protein S2, flavodoxin-like domain superfamily / Ribosomal protein S2 / S5 double stranded RNA-binding domain profile. / Ribosomal protein S5 / Ribosomal protein S5, N-terminal / Ribosomal protein S5, N-terminal domain / Ribosomal protein S5, C-terminal / Ribosomal protein S5, C-terminal domain / Ribosomal protein S14 / Ribosomal protein S14p/S29e / Ribosomal protein S12/S23 / Ribosomal S11, conserved site / Ribosomal protein S11 signature. / Ribosomal protein S10p/S20e / Ribosomal protein S11 / Ribosomal protein S10 domain / Ribosomal protein S10 domain superfamily / Ribosomal protein S10p/S20e / Ribosomal protein S9, conserved site / Ribosomal protein S9 signature. / Ribosomal protein S11 / Ribosomal protein S5/S7 類似検索 - ドメイン・相同性
DAP3 protein / Small ribosomal subunit protein mS22 / Small ribosomal subunit protein mS25 / Small ribosomal subunit protein uS10m / Small ribosomal subunit protein uS11m / Small ribosomal subunit protein uS15m / Small ribosomal subunit protein bS16m / Small ribosomal subunit protein uS17m / Small ribosomal subunit protein bS18m / Small ribosomal subunit protein mS40 ...DAP3 protein / Small ribosomal subunit protein mS22 / Small ribosomal subunit protein mS25 / Small ribosomal subunit protein uS10m / Small ribosomal subunit protein uS11m / Small ribosomal subunit protein uS15m / Small ribosomal subunit protein bS16m / Small ribosomal subunit protein uS17m / Small ribosomal subunit protein bS18m / Small ribosomal subunit protein mS40 / Small ribosomal subunit protein bS21m / Small ribosomal subunit protein uS2m / Small ribosomal subunit protein mS31 / Small ribosomal subunit protein mS33 / Small ribosomal subunit protein bS1m / Small ribosomal subunit protein mS34 / Small ribosomal subunit protein bS6m / Small ribosomal subunit protein mS38 / Small ribosomal subunit protein uS12m / Coiled-coil-helix-coiled-coil-helix domain containing 1 / Small ribosomal subunit protein mS39 / Small ribosomal subunit protein uS5m / Small ribosomal subunit protein uS3m / Small ribosomal subunit protein mS23 / Small ribosomal subunit protein mS35 / Small ribosomal subunit protein mS27 / Small ribosomal subunit protein mS26 / Small ribosomal subunit protein uS7m / Small ribosomal subunit protein uS9m / Small ribosomal subunit protein uS14m / Translation initiation factor IF-3, mitochondrial 類似検索 - 構成要素
生物種
Homo sapiens (ヒト) / Bovine (ウシ) / Bos taurus (ウシ) / Human (ヒト)
National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD)
R01 GM61576
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01 GM 32734
米国
引用
ジャーナル: iScience / 年: 2019 タイトル: Structure of Human Mitochondrial Translation Initiation Factor 3 Bound to the Small Ribosomal Subunit. 著者: Ravi K Koripella / Manjuli R Sharma / Md Emdadul Haque / Paul Risteff / Linda L Spremulli / Rajendra K Agrawal / 要旨: The human mitochondrial translational initiation factor 3 (IF3) carries mitochondrial-specific amino acid extensions at both its N and C termini (N- and C-terminal extensions [NTE and CTE, ...The human mitochondrial translational initiation factor 3 (IF3) carries mitochondrial-specific amino acid extensions at both its N and C termini (N- and C-terminal extensions [NTE and CTE, respectively]), when compared with its eubacterial counterpart. Here we present 3.3- to 3.5-Å-resolution cryoelectron microscopic structures of the mammalian 28S mitoribosomal subunit in complex with human IF3. Unique contacts observed between the 28S subunit and N-terminal domain of IF3 explain its unusually high affinity for the 28S subunit, whereas the position of the mito-specific NTE suggests NTE's role in binding of initiator tRNA to the 28S subunit. The location of the C-terminal domain (CTD) clarifies its anti-association activity, whereas the orientation of the mito-specific CTE provides a mechanistic explanation for its role in destabilizing initiator tRNA in the absence of mRNA. Furthermore, our structure hints at a possible role of the CTD in recruiting leaderless mRNAs for translation initiation. Our findings highlight unique features of IF3 in mitochondrial translation initiation.
超分子 #1: Structure of human mitochondrial translation initiation factor 3 ...
超分子
名称: Structure of human mitochondrial translation initiation factor 3 bound to the small ribosomal subunit タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all 詳細: Structure of human mitochondrial translation initiation factor 3 bound to the small ribosomal subunit