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cpnT | Hypothetical alanine and proline rich protein; Has a dual function in uptake of nutrients and induction of host cell death. The N-terminal domain (NTD) forms an outer membrane channel and is used for uptake of nutrients across the outer membrane. The secreted C-terminal toxic domain (TNT) acts as a glycohydrolase, which hydrolyzes the essential cellular coenzyme NAD(+) in the cytosol of infected macrophages, leading to necrotic host cell death. Both functions are required for survival, replication and cytotoxicity of M.tuberculosis in macrophages. (846 aa) | ||||
PE_PGRS47 | PE-PGRS family protein PE_PGRS47; Contributes to evasion of both innate and adaptive immunity. Inhibits autophagy in infected host phagocytes and inhibits major histocompatibility complex (MHC) class II antigen presentation by mycobacteria-infected dendritic cells. Has an important role in the growth and survival of M.tuberculosis, particularly during intracellular growth and in the later chronic phase of infection. (525 aa) | ||||
serB2 | Probable phosphoserine phosphatase SerB2 (PSP) (O-phosphoserine phosphohydrolase) (pspase); Catalyzes the dephosphorylation of O-phospho-L-serine into L- serine, a step in the L-serine biosynthetic pathway. Exhibits high specificity for L-phosphoserine compared to substrates like L-phosphothreonine (5% relative activity) and L-phosphotyrosine (1.7% relative activity). Belongs to the HAD-like hydrolase superfamily. SerB family. (409 aa) |