Plays an important role in the loading of the cohesin complex on to DNA. Forms a heterodim. eric complex (also known as cohesin loading complex) with NIPBL/SCC2 which mediates the loading of the cohesin complex onto chromatin Plays a role in sister chromatid cohesion and normal progression through prometaphase. Heterodimerizes with MAU2/SCC2 to form the cohesin loading complex. The NIPBL-MAU2 heterodimer interacts with the SMC1A-SMC3 heterodimer and with the cohesin complex composed of SMC1A, SMC3, RAD21 and STAG1. Binds to chromatin from the end of mitosis until prophase. Spermatocytes and oocytes (at protein level). Belongs to the SCC4/mau-2 family. Truncated N-terminus.