instruction:
In this task, you're given a paragraph and title from the research paper. Your task is to classify whether the given title is suitable or not for the research paper based on the given paragraph. Return "True" if title is proper according to paragraph else "False".
question:
Paragraph: The SARS 3C-like proteinase (SARS-3CLpro), which is the main proteinase of the SARS coronavirus, is essential to the virus life cycle. This enzyme has been shown to be active as a dimer in which only one protomer is active. However, it remains unknown how the dimer structure maintains an active monomer conformation. It has been observed that the Ser139-Leu141 loop forms a short 3 10 -helix that disrupts the catalytic machinery in the inactive monomer structure. We have tried to disrupt this helical conformation by mutating L141 to T in the stable inactive monomer G11A/R298A/Q299A. The resulting tetra-mutant G11A/L141T/R298A/Q299A is indeed enzymatically active as a monomer. Molecular dynamics simulations revealed that the L141T mutation disrupts the 3 10 -helix and helps to stabilize the active conformation. The coil-3 10 -helix conformational transition of the Ser139-Leu141 loop serves as an enzyme activity switch. Our study therefore indicates that the dimer structure can stabilize the active conformation but is not a required structure in the evolution of the active enzyme, which can also arise through simple mutations.
Title: Conformational Flexibility of a Short Loop near the Active Site of the SARS-3CLpro is Essential to Maintain Catalytic Activity OPEN
answer:
True

question:
Paragraph: Objectives: Cow and calf performance in a semi-confined cow-calf production system was compared with total confinement using summer-born calves. Material and Methods: The experiment was conducted over 3 yr in eastern Nebraska (ENREC) and 2 yr in western Nebraska (PREC) in a randomized complete block design. Lactating, crossbred beef cows (n = 127 at ENREC; n = 56 at PREC) with summer-born calves were used from November to April. Treatments were (1) drylot feeding or (2) cornstalk grazing with supplementation. Dry-lot pairs were limit fed a crop residue and distillersbased diet to meet energy requirements of a lactating cow. A dried distillers grain-based pellet was supplemented to pairs on cornstalks at a rate of 2.4 kg of DM/pair daily. Dry-lot cow-calf pairs were limit fed 12.1 kg of DM/d throughout the trial. Results and Discussion: At ENREC, cows wintered on cornstalks lost BW and had a 0.46-unit decrease in BCS (P < 0.01), whereas cows in the dry-lot gained BW and had a 0.24-unit increase in BCS. At PREC, BCS increased by 0.03 units for cows wintered in the dry-lot and decreased by 0.26 units for cows wintered on cornstalks (P < 0.04). At both locations, calves fed in a dry-lot had greater ADG and BW per day of age compared with calves offered cornstalk grazing with supplementation (P 0.03). Implications and Applications: A partial budget suggests that lower winter production inputs compensate for reduced performance of calves when cow-calf pairs are wintered on cornstalks, making residue grazing a viable option in partial confinement systems.
Title: Performance of cows and summer-born calves and economics in semi-confined and confined beef systems
answer:
False

question:
Paragraph: Pneumococcal infections are the leading cause of community-acquired pneumonia. Although the type 1 interferon- (IFN-) is a well-known antiviral cytokine, the role of IFN- in antipneumococcal host defense and its therapeutic potential remain poorly understood. We have investigated these issues by using a murine transgene expression model. We found that in control animals, Streptococcus pneumoniae infection caused severe weight loss and excessive lung inflammation, associated with rapid bacterial outgrowth. In contrast, the animals that received a single dose of an adenoviral vector expressing IFN- prior to pneumococcal infection demonstrated rapid and effective control of bacterial replication and lung inflammation and improved clinical outcome. Enhanced protection by IFN- was due to increased activation of neutrophils and macrophages with increased release of reactive oxygen and nitrogen species and bacterial killing. Furthermore, we found that raised levels of IFN- in the lung remained immune protective even when the gene transfer vector was given at a time postpneumococcal infection. Our study thus shows that the classically antiviral type 1 IFN can be exploited for enhancing immunity against pneumococcal infection via its activating effects on innate immune cells. Our findings hold implications for the therapeutic use of IFN- gene transfer strategies to combat pneumococcal infections.
Title: Type 1 interferon gene transfer enhances host defense against pulmonary Streptococcus pneumoniae infection via activating innate leukocytes
answer:
True