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2OQP

Solution structure of human interleukin-21

Functional Information from GO Data
ChainGOidnamespacecontents
A0001819biological_processpositive regulation of cytokine production
A0002314biological_processgerminal center B cell differentiation
A0002639biological_processpositive regulation of immunoglobulin production
A0005125molecular_functioncytokine activity
A0005126molecular_functioncytokine receptor binding
A0005134molecular_functioninterleukin-2 receptor binding
A0005515molecular_functionprotein binding
A0005576cellular_componentextracellular region
A0005615cellular_componentextracellular space
A0005886cellular_componentplasma membrane
A0006952biological_processdefense response
A0006955biological_processimmune response
A0007165biological_processsignal transduction
A0007259biological_processcell surface receptor signaling pathway via JAK-STAT
A0007260biological_processtyrosine phosphorylation of STAT protein
A0008284biological_processpositive regulation of cell population proliferation
A0009615biological_processresponse to virus
A0016064biological_processimmunoglobulin mediated immune response
A0030101biological_processnatural killer cell activation
A0030890biological_processpositive regulation of B cell proliferation
A0032729biological_processpositive regulation of type II interferon production
A0032740biological_processpositive regulation of interleukin-17 production
A0034105biological_processpositive regulation of tissue remodeling
A0042102biological_processpositive regulation of T cell proliferation
A0042531biological_processpositive regulation of tyrosine phosphorylation of STAT protein
A0045954biological_processpositive regulation of natural killer cell mediated cytotoxicity
A0048468biological_processcell development
A0048469biological_processcell maturation
A0050729biological_processpositive regulation of inflammatory response
A0051251biological_processpositive regulation of lymphocyte activation
A0051607biological_processdefense response to virus
A0061470biological_processT follicular helper cell differentiation
A0098586biological_processcellular response to virus
Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues21
DetailsRegion: {"description":"Disordered","evidences":[{"source":"SAM","id":"MobiDB-lite","evidenceCode":"ECO:0000256"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

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PDB entries from 2026-01-21

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