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) encodes 15 nonstructural proteins (nsps) which play crucial roles in RNA transcription and genome replication. One of them, nsp3, contains an ADRP (adenosine diphosphate-ribose-1 0 -phosphatase) domain which was revealed in recent studies to have ADP-ribose-1 0 -monophosphatase (Appr-1 0 -pase) activity. Appr-1 0 -pase catalyzes the conversion of ADPribose-1 0 -monophosphate (Appr-1 0 -p) to ADP-ribose in the tRNA-splicing pathway. The gene segment encoding the IBV nsp3 ADRP domain has been cloned and expressed in Escherichia coli. The protein has been crystallized and the crystals diffracted to 1.8 Å resolution. They belonged to space group P1, with unit-cell parameters a = 41.1, b = 43.2, c = 48.9 Å , = 78.0, = 80.0, = 73.6 . Each asymmetric unit contains two molecules.

Structural Biology and Crystallization Communications Purification, crystallization and preliminary crystallographic analysis of avian infectious bronchitis virus nsp3 ADRP domain