Biomolecular complex, also called macromolecular complex or biomacromolecular complex, is any biological complex made of more than one molecule of protein, RNA, DNA,  lipids, carbohydrates. Examples:
- protein complexes: proteasome, DNA polymerase III holoenzyme, RNA polymerase II holoenzyme, symmetric viral capsids, complex of GroEL and GroES, photosystem I, ATP synthase
- RNA and protein complexes: ribosome, spliceosome, vault, SnRNP. In general they are called ribonucleoprotein (RNP).
- DNA and protein complexes: nucleosome
- Protein and lipid complexes: Nuclear pore
The biomacromolecular complexes are studied structurally by X-ray crystallography, NMR spectroscopy of proteins, cryo-electron microscopy and successive single particle analysis, and electron tomography.  The atomic structure models obtained by X-ray crystallography and biomolecular NMR spectroscopy can be docked into the much larger structures of biomolecular complexes obtained by lower resolution techniques like electron microscopy, electron tomography, and small-angle X-ray scattering. 
- Organelle: the broadest definition of "organelle" includes not only membrane bound cellular structures, but also very large biomolecular complexes.
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