SEC31 is a protein which in yeast promotes the formation of

COPII The Coat Protein Complex II, or COPII, is a group of proteins that facilitate the formation of vesicles to transport proteins from the endoplasmic reticulum to the Golgi apparatus or endoplasmic-reticulum–Golgi intermediate compartment. This ...

transport vesicles from the

Endoplasmic Reticulum The endoplasmic reticulum (ER) is, in essence, the transportation system of the eukaryotic cell, and has many other important functions such as protein folding. It is a type of organelle made up of two subunits – rough endoplasmic reticulum ( ...

(ER). The coat has two main functions, the physical deformation of the endoplasmic reticulum membrane into vesicles and the selection of cargo molecules. Its human homologs are

SEC31A Protein transport protein Sec31A is a protein that in humans is encoded by the ''SEC31A'' gene. The protein encoded by this gene is similar to the SEC31 protein from yeast. The yeast SEC31 protein is known to be a component of the COPII protein c ...

and SEC31B.

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Further reading