The function of TRAPPC12 (trafficking protein particle complex subunit 12, Ensembl gene identifier ENSG00000171853) is as follows. Component of the TRAPP complex, which is involved in endoplasmic reticulum to Golgi apparatus trafficking at a very early stage (PubMed:21525244, PubMed:28777934). Also plays a role in chromosome congression, kinetochore assembly and stability and controls the recruitment of CENPE to the kinetochores (PubMed:25918224). {ECO:0000269|PubMed:21525244, ECO:0000269|PubMed:25918224, ECO:0000269|PubMed:28777934}.