Claim: Cohesin has around four Saccharomyces cerevisiae one of the vertebrates is Smc1 (a protein that in humans is encoded by the SMC1A gene).
Evidence: Smc1 Smc3 Mcd1/Pds3 Scc3 Smc1 Structural maintenance of chromosomes protein 1A (SMC1A) is a protein that in humans is encoded by the SMC1A gene.