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Not AvailableIntroduction: Nosocomial infections are a notorious subset of infectious diseases, varying between 10% and 20% prevalence worldwide. The infections are concomitant with various treatment complications, multiple-drug resistance, and a high degree of virulence. Klebsiella pneumoniae is a gram-negative bacteria of nosocomial importance. Objectives: Our current study is gauged to reason and understand why, despite treatment with cutting-edge medicines and technology, the K. pneumoniae remains elusive. Methods: Using various in silico tools, the KPHS_00890 hypothetical protein of K. pneumoniae subsp. pneumoniae HS11286 was identified and annotated. Results: A thorough investigation revealed that KPHS_00890 hypothetical protein is a bifunctional 5′-nucleotidase, an enzyme catalyzing the degradation of nucleotides to nucleosides. Conclusions: Scrutiny and review of the 5′-nucleotidase function across various species ascertained its pertinent role in immune evasion, by suppressing inflammatory responses. Thus, having identified the KPHS_00890 hypothetical protein of K. pneumoniae subsp. pneumoniae HS11286 as a 5′-nucleotidase, we propose that it may be involved in an immune evasion strategy during infection pathogenesis.Not Availabl