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                                            Overview
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                                                    Napsin is a pepsin‐like aspartic proteinase, in the A1 clan of the AA clade of proteinases. There are two closely related napsins, napsin A and napsin B. Napsin A is expressed as a single chain protein with the molecular weight of approximately 38 kDa. Immunohistochemical studies revealed high expression levels of napsin A in human lung and kidney but low expression in spleen. Napsin A is expressed in type II pneumocytes and in adenocarcinomas of lung. The high specificity expression of napsin A in adenocarcinomas of lung is useful to distinguish primary lung adenocarcinomas from adenocarcinomas of other organs. Please contact us at for specific academic pricing. 
 
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                                            Overview
                                            
 
                                            
                    
                        
                        
                                     
                                                                                                         
                                                                                                         
                    