4M2L | pdb_00004m2l

Gamma subunit of the translation initiation factor 2 from Sulfolobus solfataricus in nucleotide-free form

PDB DOI: https://doi.org/10.2210/pdb4M2L/pdb

Classification: TRANSLATION
Organism(s): Saccharolobus solfataricus P2
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2013-08-05 Released: 2014-03-12
Deposition Author(s): Nikonov, O.S., Stolboushkina, E.A., Arkhipova, V.I., Gabdulkhakov, A.G., Nikulin, A.D., Garber, M.B., Nikonov, S.V.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.15 Å
R-Value Free:
0.228 (Depositor), 0.235 (DCC)
R-Value Work:
0.188 (Depositor), 0.195 (DCC)
R-Value Observed:
0.190 (Depositor)

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

This is version 1.3 of the entry. See complete history.

Literature

Conformational transitions in the gamma subunit of the archaeal translation initiation factor 2.

Nikonov, O., Stolboushkina, E., Arkhipova, V., Kravchenko, O., Nikonov, S., Garber, M.

(2014) Acta Crystallogr D Biol Crystallogr 70: 658-667

PubMed: 24598735 Search on PubMed
DOI: https://doi.org/10.1107/S1399004713032240
Primary Citation Related Structures:
4M0L, 4M2L, 4M4S, 4M53

PubMed Abstract:
In eukaryotes and archaea, the heterotrimeric translation initiation factor 2 (e/aIF2) is pivotal for the delivery of methionylated initiator tRNA (Met-tRNA(i)) to the ribosome. It acts as a molecular switch that cycles between inactive (GDP-bound) and active (GTP-bound) states. Recent studies show that eIF2 can also exist in a long-lived eIF2γ-GDP-P(i) (inorganic phosphate) active state. Here, four high-resolution crystal structures of aIF2γ from Sulfolobus solfataricus are reported: aIF2γ-GDPCP (a nonhydrolyzable GTP analogue), aIF2γ-GDP-formate (in which a formate ion possibly mimics P(i)), aIF2γ-GDP and nucleotide-free aIF2γ. The structures describe the different states of aIF2γ and demonstrate the conformational transitions that take place in the aIF2γ `life cycle'.

Organizational Affiliation

Institute of Protein Research, Russian Academy of Sciences, Pushchino 142290, Moscow Region, Russian Federation.

Macromolecule Content

Total Structure Weight: 47.7 kDa
Atom Count: 3,483
Modeled Residue Count: 398
Deposited Residue Count: 410
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Translation initiation factor 2 subunit gamma	A	410	Saccharolobus solfataricus P2	Mutation(s): 0 Gene Names: eif2g EC: 3.6.5.3
UniProt
Find proteins for Q980A5 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)) Explore Q980A5 Go to UniProtKB: Q980A5
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q980A5
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
SO4 Query on SO4 Download:Ideal Coordinates CCD File SDF format, chain B [auth A] SDF format, chain C [auth A] SDF format, chain D [auth A] SDF format, chain E [auth A] MOL2 format, chain B [auth A] MOL2 format, chain C [auth A] MOL2 format, chain D [auth A] MOL2 format, chain E [auth A] mmCIF format, chain B [auth A] mmCIF format, chain C [auth A] mmCIF format, chain D [auth A] mmCIF format, chain E [auth A]	B [auth A], C [auth A], D [auth A], E [auth A]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain B [auth A] Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth A] Interactions & Density Focus chain B [auth A] Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth A]
PO4 Query on PO4 Download:Ideal Coordinates CCD File SDF format, chain F [auth A] SDF format, chain G [auth A] SDF format, chain H [auth A] SDF format, chain I [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A] MOL2 format, chain H [auth A] MOL2 format, chain I [auth A] mmCIF format, chain F [auth A] mmCIF format, chain G [auth A] mmCIF format, chain H [auth A] mmCIF format, chain I [auth A]	F [auth A], G [auth A], H [auth A], I [auth A]	PHOSPHATE ION O₄ P NBIIXXVUZAFLBC-UHFFFAOYSA-K		Interactions Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Interactions & Density Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A]
EDO Query on EDO Download:Ideal Coordinates CCD File SDF format, chain AA [auth A] SDF format, chain BA [auth A] SDF format, chain CA [auth A] SDF format, chain DA [auth A] SDF format, chain EA [auth A] SDF format, chain FA [auth A] SDF format, chain GA [auth A] SDF format, chain HA [auth A] SDF format, chain IA [auth A] SDF format, chain J [auth A] SDF format, chain JA [auth A] SDF format, chain K [auth A] SDF format, chain L [auth A] SDF format, chain M [auth A] SDF format, chain N [auth A] SDF format, chain O [auth A] SDF format, chain P [auth A] SDF format, chain Q [auth A] SDF format, chain R [auth A] SDF format, chain S [auth A] SDF format, chain T [auth A] SDF format, chain U [auth A] SDF format, chain V [auth A] SDF format, chain W [auth A] SDF format, chain X [auth A] SDF format, chain Y [auth A] SDF format, chain Z [auth A] MOL2 format, chain AA [auth A] MOL2 format, chain BA [auth A] MOL2 format, chain CA [auth A] MOL2 format, chain DA [auth A] MOL2 format, chain EA [auth A] MOL2 format, chain FA [auth A] MOL2 format, chain GA [auth A] MOL2 format, chain HA [auth A] MOL2 format, chain IA [auth A] MOL2 format, chain J [auth A] MOL2 format, chain JA [auth A] MOL2 format, chain K [auth A] MOL2 format, chain L [auth A] MOL2 format, chain M [auth A] MOL2 format, chain N [auth A] MOL2 format, chain O [auth A] MOL2 format, chain P [auth A] MOL2 format, chain Q [auth A] MOL2 format, chain R [auth A] MOL2 format, chain S [auth A] MOL2 format, chain T [auth A] MOL2 format, chain U [auth A] MOL2 format, chain V [auth A] MOL2 format, chain W [auth A] MOL2 format, chain X [auth A] MOL2 format, chain Y [auth A] MOL2 format, chain Z [auth A] mmCIF format, chain AA [auth A] mmCIF format, chain BA [auth A] mmCIF format, chain CA [auth A] mmCIF format, chain DA [auth A] mmCIF format, chain EA [auth A] mmCIF format, chain FA [auth A] mmCIF format, chain GA [auth A] mmCIF format, chain HA [auth A] mmCIF format, chain IA [auth A] mmCIF format, chain J [auth A] mmCIF format, chain JA [auth A] mmCIF format, chain K [auth A] mmCIF format, chain L [auth A] mmCIF format, chain M [auth A] mmCIF format, chain N [auth A] mmCIF format, chain O [auth A] mmCIF format, chain P [auth A] mmCIF format, chain Q [auth A] mmCIF format, chain R [auth A] mmCIF format, chain S [auth A] mmCIF format, chain T [auth A] mmCIF format, chain U [auth A] mmCIF format, chain V [auth A] mmCIF format, chain W [auth A] mmCIF format, chain X [auth A] mmCIF format, chain Y [auth A] mmCIF format, chain Z [auth A]	AA [auth A] BA [auth A] CA [auth A] DA [auth A] EA [auth A] AA [auth A], BA [auth A], CA [auth A], DA [auth A], EA [auth A], FA [auth A], GA [auth A], HA [auth A], IA [auth A], J [auth A], JA [auth A], K [auth A], L [auth A], M [auth A], N [auth A], O [auth A], P [auth A], Q [auth A], R [auth A], S [auth A], T [auth A], U [auth A], V [auth A], W [auth A], X [auth A], Y [auth A], Z [auth A]	1,2-ETHANEDIOL C₂ H₆ O₂ LYCAIKOWRPUZTN-UHFFFAOYSA-N		Interactions Focus chain AA [auth A] Focus chain BA [auth A] Focus chain CA [auth A] Focus chain DA [auth A] Focus chain EA [auth A] Focus chain FA [auth A] Focus chain GA [auth A] Focus chain HA [auth A] Focus chain IA [auth A] Focus chain J [auth A] Focus chain JA [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain O [auth A] Focus chain P [auth A] Focus chain Q [auth A] Focus chain R [auth A] Focus chain S [auth A] Focus chain T [auth A] Focus chain U [auth A] Focus chain V [auth A] Focus chain W [auth A] Focus chain X [auth A] Focus chain Y [auth A] Focus chain Z [auth A] Interactions & Density Focus chain AA [auth A] Focus chain BA [auth A] Focus chain CA [auth A] Focus chain DA [auth A] Focus chain EA [auth A] Focus chain FA [auth A] Focus chain GA [auth A] Focus chain HA [auth A] Focus chain IA [auth A] Focus chain J [auth A] Focus chain JA [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain O [auth A] Focus chain P [auth A] Focus chain Q [auth A] Focus chain R [auth A] Focus chain S [auth A] Focus chain T [auth A] Focus chain U [auth A] Focus chain V [auth A] Focus chain W [auth A] Focus chain X [auth A] Focus chain Y [auth A] Focus chain Z [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.15 Å
R-Value Free: 0.228 (Depositor), 0.235 (DCC)
R-Value Work: 0.188 (Depositor), 0.195 (DCC)
R-Value Observed: 0.190 (Depositor)

Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 95.815	α = 90
b = 95.815	β = 90
c = 165.24	γ = 120

Software Package:

Software Name	Purpose
XDS	data scaling
PHASER	phasing
PHENIX	refinement
XDS	data reduction
SADABS	data scaling

Structure Validation

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View more in-depth experimental data

Entry History

Deposition Data

Released Date: 2014-03-12

Deposition Author(s):

Revision History (Full details and data files)

Version 1.0: 2014-03-12
Type: Initial release
Version 1.1: 2020-01-01
Changes: Database references
Version 1.2: 2023-11-08
Changes: Data collection, Database references, Derived calculations, Refinement description
Version 1.3: 2024-10-30
Changes: Structure summary