Definition: In this task, you're given a paragraph from the research paper and your task is to generate a suitable title for the research paper based on the given paper. Under 100 words is a good title length.
Input: Avian infectious bronchitis virus (IBV), which causes respiratory disease in infected birds, belongs to coronavirus group 3. IBV encodes 15 nonstructural proteins (nsp2-nsp16) which play crucial roles in RNA transcription and genome replication. Nonstructural protein 9 (nsp9) has been identified as a protein that is essential to viral replication because of its single-stranded RNAbinding ability. The gene segment encoding IBV nsp9 has been cloned and expressed in Escherichia coli. The protein has been crystallized and the crystals diffracted X-rays to 2.44 Å resolution. They belonged to the cubic space group I432, with unit-cell parameters a = b = c = 123.4 Å , = = = 90 . The asymmetric unit appeared to contain one molecule, with a solvent content of 62% (V M = 3.26 Å 3 Da À1 ). # 2010 International Union of Crystallography All rights reserved crystallization communications 708 Ma et al. Infectious bronchitis virus nonstructural protein 9 Acta Cryst. (2010). F66, 706-708 Figure 2 A typical diffraction pattern of an IBV nsp9 crystal collected on a Rigaku R-AXIS IV ++ image-plate detector.

Structural Biology and Crystallization Communications Crystallization and preliminary X-ray diffraction studies of infectious bronchitis virus nonstructural protein 9