AS2TS intermediate model information! 

MOLECULE  1dur_A  
HEADER    ELECTRON TRANSPORT                      18-JAN-00   1DUR               
TITLE     REPLACEMENT FOR 1FDX 2(4FE4S) FERREDOXIN FROM (NOW) PEPTOSTREPTOCOCCUS 
TITLE    2 ASACCHAROLYTICUS                                                      
COMPND    MOL_ID: 1;                                                             
COMPND   2 MOLECULE: 2[4FE-4S] FERREDOXIN;                                       
COMPND   3 CHAIN: A                                                              
SOURCE    MOL_ID: 1;                                                             
SOURCE   2 ORGANISM_SCIENTIFIC: PEPTONIPHILUS ASACCHAROLYTICUS;                  
SOURCE   3 ORGANISM_TAXID: 1258;                                                 
SOURCE   4 OTHER_DETAILS: FORMERLY CALLED PEPTOCOCCUS AEROGENES                  
KEYWDS    TWO 4FE-4S CLUSTERS, ELECTRON TRANSPORT                                
EXPDTA    X-RAY DIFFRACTION                                                      
AUTHOR    E.T.ADMAN,L.C.SIEKER                                                   
REVDAT   6   13-AUG-14 1DUR    1       REMARK VERSN                              
REVDAT   5   24-MAR-09 1DUR    1       ATOM   CONECT                             
REVDAT   4   24-FEB-09 1DUR    1       VERSN                                     
REVDAT   3   20-DEC-00 1DUR    1       REMARK                                    
REVDAT   2   28-JUN-00 1DUR    1       SOURCE                                    
REVDAT   1   29-MAR-00 1DUR    0                                                 
JRNL        AUTH   E.T.ADMAN,L.C.SIEKER                                          
JRNL        TITL   THE 2[4FE-4S] FERREDOXINS                                     
JRNL        REF    TO BE PUBLISHED                                               
JRNL        REFN                                                                 
REMARK   2 RESOLUTION.    2.00 ANGSTROMS.                                        
DBREF  1DUR A    1    55  UNP    P00193   FER_PEPAS        1     55              
SEQRES   1 A   55  ALA TYR VAL ILE ASN ASP SER CYS ILE ALA CYS GLY ALA           
SEQRES   2 A   55  CYS LYS PRO GLU CYS PRO VAL ASN CYS ILE GLN GLU GLY           
SEQRES   3 A   55  SER ILE TYR ALA ILE ASP ALA ASP SER CYS ILE ASP CYS           
SEQRES   4 A   55  GLY SER CYS ALA SER VAL CYS PRO VAL GLY ALA PRO ASN           
SEQRES   5 A   55  PRO GLU ASP                                                   
HET    SF4  A  56       8                                                        
HET    SF4  A  57       8                                                        
HETNAM     SF4 IRON/SULFUR CLUSTER                                               
FORMUL   2  SF4    2(FE4 S4)                                                     
FORMUL   4  HOH   *93(H2 O)                                                      
CRYST1   30.520   37.750   39.370  90.00  90.00  90.00 P 21 21 21    4           
END  

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