sequence of Smc1 alpha SMC1A_MOUSE Chromosome segregation protein SmcB IMR:0704489 SB1.8 SMC protein 1A SMC-1-alpha SMC-1A SMCB Sb1.8 Smc1 Smc1a Smc1alpha Smc1l1 Smcb Structural maintenance of chromosomes protein 1A UniProt:Q9CU62 molecule_role structural maintenance of chromosomes 1A