The phrase "complex composed of" is a perfectly correct and usable phrase in written English.
It is usually used to refer to something made up of a number of smaller parts. For example, "The Milky Way is a complex composed of billions of stars."
In H. pylori, Kdo hydrolase activity is dependent upon a putative two-protein complex composed of proteins Hp0579 and Hp0580.
Huaiqihuang (HQH) extractum is a Chinese herbal complex composed of Trametes robiniophila Murr.
TRiC/CCT (TCP1 ring complex/chaperonin containing TCP1) is an ATP-dependent complex composed of two stacked octameric rings.
The BBSome is a coat-like ciliary trafficking complex composed of proteins mutated in Bardet-Biedl syndrome (BBS).
How does the V-ATPase regulate the function of the mTORC1 scaffolding complex composed of Ragulator and Rag GTPases?
Recent phylogenetic analyses indicate that B. tabaci is a complex composed of >28 morphologically indistinguishable species.
Tognon, C. E. et al. A tripartite complex composed of ETV6-NTRK3, IRS1 and IGF1R is required for ETV6-NTRK3-mediated membrane localization and transformation.
Kelleher, D.J., Kreibich, G. & Gilmore, R. Oligosaccharyltransferase activity is associated with a protein complex composed of ribophorins I and II and a 48 kd protein.
This finding suggests that the nonconventional splicing complex, composed of the kinase-endonuclease Ire1p and the tRNA ligase Rlg1p, was activated.
Furthermore, secreted IL-31 aggregates were part of a large complex composed of various pleiotropic secretory factors and immune-stimulators.
The complex composed of PAMAM-Arg/DNA showed increased gene delivery potency compared to native PAMAM dendrimer and PAMAM-Lys.
