The structure was published by Chacko, B.M., Qin, B., Correia, J.J., Lam, S.S., de Caestecker, M.P., and Lin, K., in 2001 in a paper entitled "The L3 loop and C-terminal phosphorylation jointly define Smad protein trimerization." (abstract).
This crystal structure was determined using X-ray diffraction at a resolution of 3.0 Å and deposited in 2000.
The experimental data on which the structure is based was also deposited.
This PDB entry contains multiple copies of the structure of SMAD4.
The molecule most likely forms homotrimers.
The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):
This entry contains 1 unique UniProt protein: