1TIG

TRANSLATION INITIATION FACTOR 3 C-TERMINAL DOMAIN

PDB DOI: https://doi.org/10.2210/pdb1TIG/pdb

Classification: RIBOSOME BINDING FACTOR
Organism(s): Geobacillus stearothermophilus
Expression System: Escherichia coli
Mutation(s): No

Deposited: 1995-08-16 Released: 1995-12-07
Deposition Author(s): Biou, V., Shu, F., Ramakrishnan, V.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.00 Å
R-Value Free: 0.274
R-Value Work: 0.207
R-Value Observed: 0.207

wwPDB Validation 3D Report Full Report

This is version 1.2 of the entry. See complete history.

Literature

X-ray crystallography shows that translational initiation factor IF3 consists of two compact alpha/beta domains linked by an alpha-helix.

Biou, V., Shu, F., Ramakrishnan, V.

(1995) EMBO J 14: 4056-4064

PubMed: 7664745 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.1002/j.1460-2075.1995.tb00077.x
Primary Citation of Related Structures:
1TIF, 1TIG

PubMed Abstract:
The structures of the two domains of translational initiation factor IF3 from Bacillus stearothermophilus have been solved by X-ray crystallography using single wavelength anomalous scattering and multiwavelength anomalous diffraction. Each of the two domains has an alpha/beta topology, with an exposed beta-sheet that is reminiscent of several ribosomal and other RNA binding proteins. An alpha-helix that protrudes out from the body of the N-terminal domain towards the C-terminal domain suggests that IF3 consists of two RNA binding domains connected by an alpha-helix and that it may bridge two regions of the ribosome. This represents the first high resolution structural information on a translational initiation factor.

Organizational Affiliation

Biology Department, Brookhaven National Laboratory, Upton, NY 11973, USA.

Macromolecule Content

Total Structure Weight: 10.75 kDa
Atom Count: 741
Modelled Residue Count: 88
Deposited Residue Count: 94
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRANSLATION INITIATION FACTOR 3	A	94	Geobacillus stearothermophilus	Mutation(s): 0 Gene Names: T7, infC
UniProt
Find proteins for P03000 (Geobacillus stearothermophilus) Explore P03000 Go to UniProtKB: P03000
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P03000
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.00 Å
R-Value Free: 0.274
R-Value Work: 0.207
R-Value Observed: 0.207
Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 72.5	α = 90
b = 30.2	β = 100.11
c = 43.4	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
MOSFLM	data reduction
X-PLOR	phasing

Structure Validation

View Full Validation Report

Entry History

Deposition Data

Released Date: 1995-12-07

Deposition Author(s):

Ramakrishnan, V.

Revision History (Full details and data files)

Version 1.0: 1995-12-07
Type: Initial release
Version 1.1: 2008-03-24
Changes: Version format compliance
Version 1.2: 2011-07-13
Changes: Version format compliance

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.