Macromolecule Annotations for the Entities in PDB 1F45

Protein Family Annotation Pfam Database Homepage

Chains Pfam Accession Pfam Identifier Pfam Description Type Source
B PF03039 IL12 Interleukin-12 alpha subunit Domain Interleukin 12 (IL-12) is a disulphide-bonded heterodimer consisting of a 35kDa alpha subunit (e.g. Swiss:P29459) and a 40kDa beta subunit (e.g. Swiss:P29460). It is involved in the stimulation and maintenance of Th1 cellular immune responses, including the normal host defence against various intracellular pathogens, such as Leishmania, Toxoplasma, measles virus and HIV. IL-12 also has an important role in pathological Th1 responses, such as in inflammatory bowel disease and multiple sclerosis. Suppression of IL-12 activity in such diseases may have therapeutic benefit. On the other hand, administration of recombinant IL-12 may have therapeutic benefit in conditions associated with pathological Th2 responses [1,2]. PFAM PF03039
A PF10420 IL12p40_C Cytokine interleukin-12p40 C-terminus Domain IL12p40_C is the largely beta stranded C-terminal, D3, domain of interleukin-12p40 or interleukin-12B. This interleukin is produced on stimulation by macrophage-engulfed micro-organisms and other stimuli, when it dimerises with interleukin-12p35 to form a heterodimer which then binds to receptors on natural killer cells to activate them to destroy the micro-organisms [1]. This domain contains two disulfide bridges, one of which serves to bind p40 to p35 and the other to hold the beta strands within the domain together. The cupped shape of the p35 binding interface matches the elbow-like bend between D2 and D3 in p40 [2]. The domain is often associated with family fn3, Pfam:PF00041. PFAM PF10420

Gene Product Annotation Gene Ontology Consortium Homepage

Chains Polymer Molecular Function Biological Process Cellular Component
SUGAR (3-MER) (1F45:)
  • none
  • none
  • none

Protein Modification Annotation

Type PDB Residue Nr. Description