Structure based on 3i1v

Ideal structure
Name: beta,beta-caroten-4-one
Formula: C40 H54 O
Weight: 550.856
Spacial conformation based on PDB 3i1v.
Also present in other 13 PDB entries.
RESIDUE   ECH     95
CONECT      C1     4 C2   C6   C31  C32 
CONECT      C2     4 C1   C3   H2   H2A 
CONECT      C3     4 C2   C4   H3   H3A 
CONECT      C4     4 C3   C5   H4   H4A 
CONECT      C5     3 C4   C6   C33 
CONECT      C6     3 C1   C5   C7  
CONECT      C7     3 C6   C8   H7  
CONECT      C8     3 C7   C9   H8  
CONECT      C9     3 C8   C10  C34 
CONECT      C10    3 C9   C11  H10 
CONECT      C11    3 C10  C12  H11 
CONECT      C12    3 C11  C13  H12 
CONECT      C13    3 C12  C14  C35 
CONECT      C14    3 C13  C15  H14 
CONECT      C15    3 C14  C16  H15 
CONECT      C16    3 C15  C17  H16 
CONECT      C17    3 C16  C18  H17 
CONECT      C18    3 C17  C19  C36 
CONECT      C19    3 C18  C20  H19 
CONECT      C20    3 C19  C21  H20 
CONECT      C21    3 C20  C22  H21 
CONECT      C22    3 C21  C23  C37 
CONECT      C23    3 C22  C24  H23 
CONECT      C24    3 C23  C25  H24 
CONECT      C25    3 C24  C26  C30 
CONECT      C26    3 C25  C27  C38 
CONECT      C27    3 C26  O27  C28 
CONECT      O27    1 C27 
CONECT      C28    4 C27  C29  H28  H28A
CONECT      C29    4 C28  C30  H29  H29A
CONECT      C30    4 C25  C29  C39  C40 
CONECT      C31    4 C1   H31  H31A H31B
CONECT      C32    4 C1   H32  H32A H32B
CONECT      C33    4 C5   H33  H33A H33B
CONECT      C34    4 C9   H34  H34A H34B
CONECT      C35    4 C13  H35  H35A H35B
CONECT      C36    4 C18  H36  H36A H36B
CONECT      C37    4 C22  H37  H37A H37B
CONECT      C38    4 C26  H38  H38A H38B
CONECT      C39    4 C30  H39  H39A H39B
CONECT      C40    4 C30  H40  H40A H40B
CONECT      H2     1 C2  
CONECT      H2A    1 C2  
CONECT      H3     1 C3  
CONECT      H3A    1 C3  
CONECT      H4     1 C4  
CONECT      H4A    1 C4  
CONECT      H7     1 C7  
CONECT      H8     1 C8  
CONECT      H10    1 C10 
CONECT      H11    1 C11 
CONECT      H12    1 C12 
CONECT      H14    1 C14 
CONECT      H15    1 C15 
CONECT      H16    1 C16 
CONECT      H17    1 C17 
CONECT      H19    1 C19 
CONECT      H20    1 C20 
CONECT      H21    1 C21 
CONECT      H23    1 C23 
CONECT      H24    1 C24 
CONECT      H28    1 C28 
CONECT      H28A   1 C28 
CONECT      H29    1 C29 
CONECT      H29A   1 C29 
CONECT      H31    1 C31 
CONECT      H31A   1 C31 
CONECT      H31B   1 C31 
CONECT      H32    1 C32 
CONECT      H32A   1 C32 
CONECT      H32B   1 C32 
CONECT      H33    1 C33 
CONECT      H33A   1 C33 
CONECT      H33B   1 C33 
CONECT      H34    1 C34 
CONECT      H34A   1 C34 
CONECT      H34B   1 C34 
CONECT      H35    1 C35 
CONECT      H35A   1 C35 
CONECT      H35B   1 C35 
CONECT      H36    1 C36 
CONECT      H36A   1 C36 
CONECT      H36B   1 C36 
CONECT      H37    1 C37 
CONECT      H37A   1 C37 
CONECT      H37B   1 C37 
CONECT      H38    1 C38 
CONECT      H38A   1 C38 
CONECT      H38B   1 C38 
CONECT      H39    1 C39 
CONECT      H39A   1 C39 
CONECT      H39B   1 C39 
CONECT      H40    1 C40 
CONECT      H40A   1 C40 
CONECT      H40B   1 C40 
HET    ECH             95
HETSYN     ECH echinenone
HETNAM     ECH beta,beta-caroten-4-one
FORMUL      ECH    C40 H54 O1

uses Jmol, developed by the Jmol Development Team (color reference)
OCA© by Jaime Prilusky, 1996-2004,2006,2010,2014
Bioinformatics Unit
Weizmann Institute of Science