alternative splicing 417

cleavage/polyadenylation complex 431

cross-exon recognition complex 428

Dicer 448

Drosha 448

exosome 432

5′ cap 419

group I introns 429

group II introns 429

iron-response element–binding protein (IRE-BP) 455

micro-RNAs (miRNAs) 445

mRNA surveillance 456

mRNP exporter 440

nuclear pore complex (NPC) 440

poly(A) tail 430

pre-mRNA 421

pre-rRNA 461

ribozyme 466

RNA editing 439

RNA-induced silencing complex (RISC) 448

RNA interference (RNAi) 450

RNA splicing 419

short interfering RNAs (siRNA) 445

siRNA knockdown 451

small nuclear RNAs (snRNAs) 424

small nucleolar RNAs (snoRNAs) 463

spliceosome 426

SR proteins 428