AS2TS intermediate model information! 

MOLECULE  1byr_A  
HEADER    ENDONUCLEASE                            19-OCT-98   1BYR               
TITLE     CRYSTAL STRUCTURE OF A PHOSPHOLIPASE D FAMILY MEMBER, NUC FROM         
TITLE    2 SALMONELLA TYPHIMURIUM                                                
COMPND    MOL_ID: 1;                                                             
COMPND   2 MOLECULE: PROTEIN (ENDONUCLEASE);                                     
COMPND   3 CHAIN: A;                                                             
COMPND   4 ENGINEERED: YES                                                       
SOURCE    MOL_ID: 1;                                                             
SOURCE   2 ORGANISM_SCIENTIFIC: SALMONELLA TYPHIMURIUM;                          
SOURCE   3 ORGANISM_TAXID: 602;                                                  
SOURCE   4 CELLULAR_LOCATION: PERIPLASM;                                         
SOURCE   5 GENE: NUC;                                                            
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                        
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 469008;                                      
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                  
SOURCE   9 EXPRESSION_SYSTEM_CELLULAR_LOCATION: PERIPLASM;                       
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PT7-7;                                     
SOURCE  11 EXPRESSION_SYSTEM_GENE: NUC                                           
KEYWDS    ENDONUCLEASE, PHOSPHODIESTERASE                                        
EXPDTA    X-RAY DIFFRACTION                                                      
AUTHOR    J.A.STUCKEY,J.E.DIXON                                                  
REVDAT   4   27-DEC-23 1BYR    1       REMARK                                    
REVDAT   3   13-JUL-11 1BYR    1       VERSN                                     
REVDAT   2   24-FEB-09 1BYR    1       VERSN                                     
REVDAT   1   19-OCT-99 1BYR    0                                                 
JRNL        AUTH   J.A.STUCKEY,J.E.DIXON                                         
JRNL        TITL   CRYSTAL STRUCTURE OF A PHOSPHOLIPASE D FAMILY MEMBER.         
JRNL        REF    NAT.STRUCT.BIOL.              V.   6   278 1999               
JRNL        REFN                   ISSN 1072-8368                                
JRNL        PMID   10074947                                                      
JRNL        DOI    10.1038/6716                                                  
REMARK   2 RESOLUTION.    2.00 ANGSTROMS.                                        
DBREF  1BYR A    1   155  UNP    Q46707   Q46707_ECOLI    23    177              
SEQRES   1 A  155  VAL GLU PRO SER VAL GLN VAL GLY TYR SER PRO GLU GLY           
SEQRES   2 A  155  SER ALA ARG VAL LEU VAL LEU SER ALA ILE ASP SER ALA           
SEQRES   3 A  155  LYS THR SER ILE ARG MET MET ALA TYR SER PHE THR ALA           
SEQRES   4 A  155  PRO ASP ILE MET LYS ALA LEU VAL ALA ALA LYS LYS ARG           
SEQRES   5 A  155  GLY VAL ASP VAL LYS ILE VAL ILE ASP GLU ARG GLY ASN           
SEQRES   6 A  155  THR GLY ARG ALA SER ILE ALA ALA MET ASN TYR ILE ALA           
SEQRES   7 A  155  ASN SER GLY ILE PRO LEU ARG THR ASP SER ASN PHE PRO           
SEQRES   8 A  155  ILE GLN HIS ASP LYS VAL ILE ILE VAL ASP ASN VAL THR           
SEQRES   9 A  155  VAL GLU THR GLY SER PHE ASN PHE THR LYS ALA ALA GLU           
SEQRES  10 A  155  THR LYS ASN SER GLU ASN ALA VAL VAL ILE TRP ASN MET           
SEQRES  11 A  155  PRO LYS LEU ALA GLU SER PHE LEU GLU HIS TRP GLN ASP           
SEQRES  12 A  155  ARG TRP ASN GLN GLY ARG ASP TYR ARG SER SER TYR               
FORMUL   2  HOH   *188(H2 O)                                                     
CRYST1   59.060   59.060  111.300  90.00  90.00  90.00 P 43 21 2     8           
END  

FATAL: There is no PDB entry  ( 1byr_A ) in the database!