we propose that the characteristic shape of each of the major snrnp species u1 , u2 , u4/u6 , and u5 is determined by ( i ) a core domain containing the proteins that are common to all members of this family , which has the same shape for each member , and ( ii ) peripheral structures , which for snrnps u1 , u2 , and u5 arise from the specific proteins , that give each of these snrnp species its characteristic shape .
C0162795
snrnps
C0142661
snrnp