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     PRO P   113
REMARK 465     GLY P   114
REMARK 465     LEU P   115
REMARK 465     LEU P   116
REMARK 465     ASN P   117
REMARK 465     ASP P   118
REMARK 465     THR P   119
REMARK 465     ILE P   177
REMARK 465     GLN P   178
REMARK 465     GLY P   179
REMARK 465     THR P   180
REMARK 465     GLY P   181
REMARK 465     GLN P   182
REMARK 465     LEU P   183
REMARK 465     LEU P   184
REMARK 465     GLY P   205
REMARK 465     ASP P   206
REMARK 465     ASP P   207
REMARK 465     SER P   208
REMARK 465     ASN P   209
DBREF  6KXS P    1   547  UNP    P01833   PIGR_HUMAN      19    565
SEQRES   1 P  114  SER GLN GLY PRO GLY LEU LEU ASN ASP THR LYS VAL TYR
SEQRES   2 P  114  THR VAL ASP LEU GLY ARG THR VAL THR ILE ASN CYS PRO
SEQRES   3 P  114  PHE LYS THR GLU ASN ALA GLN LYS ARG LYS SER LEU TYR
SEQRES   4 P  114  LYS GLN ILE GLY LEU TYR PRO VAL LEU VAL ILE ASP SER
SEQRES   5 P  114  SER GLY TYR VAL ASN PRO ASN TYR THR GLY ARG ILE ARG
SEQRES   6 P  114  LEU ASP ILE GLN GLY THR GLY GLN LEU LEU PHE SER VAL
SEQRES   7 P  114  VAL ILE ASN GLN LEU ARG LEU SER ASP ALA GLY GLN TYR
SEQRES   8 P  114  LEU CYS GLN ALA GLY ASP ASP SER ASN SER ASN LYS LYS
SEQRES   9 P  114  ASN ALA ASP LEU GLN VAL LEU LYS PRO GLU