HEADER    IMMUNE SYSTEM                           31-DEC-69   6KXS
TITLE     Cryo-EM structure of human IgM-Fc in complex with the J chain and the
TITLE   2 ectodomain of pIgR
COMPND    MOL_ID: 3;
COMPND   2 MOLECULE: Polymeric immunoglobulin receptor;
COMPND   3 CHAIN: P;
COMPND   4 ENGINEERED: YES;
EXPDTA     ELECTRON MICROSCOPY
REMARK 465 MISSING RESIDUES                                                    
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                      
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN              
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)               
REMARK 465
REMARK 465   M RES C SSSEQI  
REMARK 465     THR P   453
REMARK 465     ALA P   454
REMARK 465     VAL P   455
REMARK 465     LEU P   456
REMARK 465     GLY P   457
REMARK 465     GLU P   458
REMARK 465     THR P   459
REMARK 465     ALA P   498
REMARK 465     PHE P   499
REMARK 465     VAL P   500
REMARK 465     ASN P   501
REMARK 465     CYS P   502
REMARK 465     ASP P   503
REMARK 465     GLU P   504
REMARK 465     ASN P   505
REMARK 465     ASN P   514
REMARK 465     LEU P   515
REMARK 465     VAL P   516
REMARK 465     THR P   517
REMARK 465     ARG P   518
REMARK 465     ALA P   519
REMARK 465     ASP P   520
REMARK 465     GLU P   521
DBREF  6KXS P    1   547  UNP    P01833   PIGR_HUMAN      19    565
SEQRES   1 P   98  PRO ASN LEU LYS VAL PRO GLY ASN VAL THR ALA VAL LEU
SEQRES   2 P   98  GLY GLU THR LEU LYS VAL PRO CYS HIS PHE PRO CYS LYS
SEQRES   3 P   98  PHE SER SER TYR GLU LYS TYR TRP CYS LYS TRP ASN ASN
SEQRES   4 P   98  THR GLY CYS GLN ALA LEU PRO SER GLN ASP GLU GLY PRO
SEQRES   5 P   98  SER LYS ALA PHE VAL ASN CYS ASP GLU ASN SER ARG LEU
SEQRES   6 P   98  VAL SER LEU THR LEU ASN LEU VAL THR ARG ALA ASP GLU
SEQRES   7 P   98  GLY TRP TYR TRP CYS GLY VAL LYS GLN GLY HIS PHE TYR
SEQRES   8 P   98  GLY GLU THR ALA ALA VAL TYR