cellular response to hypoxia

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
GO Category: 
Total items in this category:  
Possible transcriptional regulatory protein
Beta-lactamase class C and other penicillin binding proteins
14 kDa antigen (16 kDa antigen) (HSP 16.3)
\GDP-mannose 4,6-dehydratase (EC\\\""
Isocitrate lyase (EC / Methylisocitrate lyase (EC
Multimodular transpeptidase-transglycosylase (EC (EC 3.4.-.-)