Proteasome assembly chaperone 1 (PAC-1) (Chromosome 21 leucine-rich protein) (C21-LRP) (Down syndrome critical region protein 2)
1_MAATF 6_ FGEVV 11_ KAPCR 16_ AGTED 21_ EEEEE 26_ EGRRE 31_ TPEDR 36_ EVRLQ 41_ LARKR 46_ EVRLL 51_ RRQTK 56_ TSLEV 61_ SLLEK 66_ YPCSK 71_ FIIAI 76_ GNNAV 81_ AFLSS 86_ FVMNS 91_ GVWEE 96_ VGCAK 101_ LWNEW 106_ CRTTD 111_ TTHLS 116_ STEAF 121_ CVFYH 126_ LKSNP 131_ SVFLC 136_ QCSCY 141_ VAEDQ 146_ QYQWL 151_ EKVFG 156_ SCPRK 161_ NMQIT 166_ ILTCR 171_ HVTDY 176_ KTSES 181_ TGSLP 186_ SPFLR 191_ ALKTQ 196_ NFKDS 201_ ACCPL 206_ LEQPN 211_ IVHDL 216_ PAAVL 221_ SYCQV 226_ WKIPA 231_ ILYLC 236_ YTDVM 241_ KLDLI 246_ TVEAF 251_ KPILS 256_ TRSLK 261_ GLVKN 266_ IPQST 271_ EILKK 276_ LMTTN 281_EIQSN
1: Chaperone protein which promotes assembly of the 20S proteasome as part of a heterodimer with PSMG2. The PSMG1-PSMG2 heterodimer binds to the PSMA5 and PSMA7 proteasome subunits, promotes assembly of the proteasome alpha subunits into the heteroheptameric alpha ring and prevents alpha ring dimerization