Source:http://linkedlifedata.com/resource/umls/id/C1748486
GO: The region of a condensed chromosome kinetochore closest to centromeric DNA; in mammals the CREST antigens (CENP proteins) are found in this layer; this layer may help define underlying centromeric chromatin structure and position of the kinetochore on the chromosome. [GOC:clt, PMID:10619130, PMID:11483983]