→核孔运输特点 ◆被动运输
核孔运输特点 ◆被动运输 ◆主动运输 ●信号引导 ●双向性
Molecular traffic through NPC Energy-dependent Passive diffusion transport Proteins Small molecules E Nud RNAS
Molecular traffic through NPC
核孔的被 CYTOSOL NUCLEUS size of proteins size of proteins that enter nucleus that enter nucleus by free diffusion by active transport 50n
核孔的被动运输
Small molecular traffic through the NPC by passive diffusion Small molecules and some proteins with Mw<50 kD pass freely across the nuclear envelope in either direction Most proteins and RNAs pass through the NPC by an active process in only one direction
Small molecular traffic through the NPC by passive diffusion Small molecules and some proteins with MW< 50 kD pass freely across the nuclear envelope in either direction. Most proteins and RNAs pass through the NPC by an active process in only one direction
核孔的双 Transcription and RNA processing Chromosomal replication RNA mRNA tRNA Ribosomal subunits NUCLEUS Prcteins needed Ribosomal Proteins neece for chromosome proteins for transcription replication Protein synthesis Growing po peptid mRNA CYTOPLASM Completed protein
核孔的双向运输