Elongation factor
Elongation factors (EF) facilitate translational elongation during the formation of peptide bonds in the ribosome. EF-selB is selenocysteine-specific EF. EF-Tu or EF 1-α (elongation factor thermo unstable) is a prokaryotic EF. EF-Tu contributes to translational accuracy. It catalyzes the addition of aminoacyl tRNA.
EF-Ts or EF 1-β (elongation factor thermo stable) catalyzes the release of GDP from EF-Tu. EF-G translocates the peptidyl tRNA from the A site to the P site while moving the mRNA through the ribosome. EF-SII helps RNA polymerase II to bypass blocks to elongation. EF-ELL2 enhances polyadenylation and exon skipping with the gene encoding the immunoglobulin heavy-chain complex. EF-GreA or GreB are cleavage factors allowing the resumption of elongation. EF-NusA recruits translesion DNA polymerases to gaps encountered during translation. EF-P alters the ribosome affinity to aminoacyl-tRNA. EF-1 gamma acts during the delivery of aminoacyl tRNA to the ribosome. EF-2 promotes the translocation of the nascent protein chain from the A site to the P site on the ribosome. EF-3 is unique EF in fungi hence it provides an anti-fungal drug target. EF Spt4, Spt5, Spt6 are conserved among eukaryotes. They modulate the chromatin structure. EF-CA150 is believed to play a role in coupling transcription and splicing. The elongin B and C complex is involved in the proteasomal degredation of target proteins. | ||||||||||||
3D structures of elongation factor
Updated on 24-November-2014
- EF-Tu
- HEAT Repeat, SelB, 1dg1, 2fx3, 1etu – EcEF – Escherichia coli
- 1qzd – EcEF – Cryo EM
- 3u2q – EcEF + drug
- 1mj1 – EcEF + Phe-tRNA + S12 + S13 + L11 – Cryo EM
- 3ep2 - EcEF + tRNA + S12 + L11 + 16SRRNA + 23SRRNA – Cryo EM
- 1ttt, 1ob5 – TaEF + Phe-tRNA + GDPNP - Thermus aquaticus
- 1b23 - TaEF + Cys-tRNA
- 1ls2 – yEF + Phe-tRNA – yeast – Cryo EM
- 3agj – EF + plethora protein – Aeropyrum pernix
- 4h9g, 4lbv, 4lbw, 4lby, 4lbz, 4lc0 – TtEF – Thermus thermophilus
- 4j0q – EF – Pseudomonas putida
- HEAT Repeat, SelB, 1dg1, 2fx3, 1etu – EcEF – Escherichia coli
- EF-Tu complex with antibiotics
- EF-Tu complex with nucleotide
- EF-Tu with EF-Ts
- EF-Tu in the ribosome
- EF-SII
- EF-ELL2
- 2e5n – hEF N2 domain - NMR
- 2e5n – hEF N2 domain - NMR
- EF-G
- 1efg, 1elo, 1ktv, 1wdt, 2dy1 – TtEF
- 1pn6, 3izp – TtEF – Cryo EM
- 4b8f, 4b8h – TtEF in 70S ribosome
- 4juw, 4kbt, 4kbv, 4kcy, 4kd0, 4kd8, 4kda, 4kdg, 4kdj, 4btc – TtEF in 30S ribosome
- 4kiy, 4kj0, 4kj2, 4kj4, 4kj6, 4kj8, 4kja, 4kjc – EcEF in 30S ribosome
- 3j5n – EcEF in 30S ribosome – Cryo-EM
- 3j5x – EcEF in 30S ribosome + antibiotics – Cryo-EM
- 1fnm, 2bm0, 2bm1 – TtEF (mutant)
- 2bcw – TtEF + L11 + L7/L12
- 2xex – SaEF
- 3zz0, 3zzt, 3zzu – SaEF (mutant)
- 2bv3 - TtEF (mutant) + GTP analog
- 2j7k - TtEF (mutant) + GDP analog
- 2om7, 2wri, 2wrk – TtEF in 70S ribosome – Cryo EM
- 2xsy, 2xuy - TtEF in 70S ribosome
- 1dar, 2efg – TtEF + GDP
- 1jqm, 1jqs – EcEF + L11 – Cryo EM
- 1zn0, 2rdo, 3j0e, 3j18 – EcEF in 30S ribosome – Cryo-EM
- 4fn5 – PaEF - Pseudomonas aeruginosa
- 1efg, 1elo, 1ktv, 1wdt, 2dy1 – TtEF
- EF-GreA/GreB
- EF-NusA
- EF-P
- EF-Ts
- EF-1G
- EF-2
- 1n0v – yEF
- 1u2r – yEF + GDP
- 1n0u, 2e1r, 2npf – yEF + antifungal drug
- 1zm2, 1zm3, 1zm4, 1zm9, 3b78, 3b82, 3b8h, 2zit – yEF + exotoxin
- 1s1h - yEF + antifungal drug in 40S ribosome – Cryo EM
- 1s1h - hEF in 40S ribosome – Cryo EM
- 2p8w, 2p8x, 3dny - yEF in 80S ribosome – Cryo EM
- 2p8y, 2p8z - yEF+ antifungal drug in 80S ribosome – Cryo EM
- 1n0v – yEF
- EF-3
- EF-SelB
- EF-Spt5
- EF-Spt6
- EF-CA150