Structure based on 1kgk

Ideal structure
Name: spermine (fully protonated form)
Formula: C10 H30 N4
Weight: 206.372
SMILES: "[NH3+]CCC[NH2+]CCCC[NH2+]CCC[NH3+]"
Spacial conformation based on PDB 1kgk.
Also present in other 9 PDB entries.
RESIDUE   SPK     44
CONECT      N1     4 C2   H1A  H1B  H1C 
CONECT      C2     4 N1   C3   H2A  H2B 
CONECT      C3     4 C2   C4   H3A  H3B 
CONECT      C4     4 C3   N5   H4A  H4B 
CONECT      N5     4 C4   C6   H5A  H5B 
CONECT      C6     4 N5   C7   H6A  H6B 
CONECT      C7     4 C6   C8   H7A  H7B 
CONECT      C8     4 C7   C9   H8A  H8B 
CONECT      C9     4 C8   N10  H9A  H9B 
CONECT      N10    4 C9   C11  H101 H102
CONECT      C11    4 N10  C12  H111 H112
CONECT      C12    4 C11  C13  H121 H122
CONECT      C13    4 C12  N14  H131 H132
CONECT      N14    4 C13  H141 H142 H143
CONECT      H1A    1 N1  
CONECT      H1B    1 N1  
CONECT      H1C    1 N1  
CONECT      H2A    1 C2  
CONECT      H2B    1 C2  
CONECT      H3A    1 C3  
CONECT      H3B    1 C3  
CONECT      H4A    1 C4  
CONECT      H4B    1 C4  
CONECT      H5A    1 N5  
CONECT      H5B    1 N5  
CONECT      H6A    1 C6  
CONECT      H6B    1 C6  
CONECT      H7A    1 C7  
CONECT      H7B    1 C7  
CONECT      H8A    1 C8  
CONECT      H8B    1 C8  
CONECT      H9A    1 C9  
CONECT      H9B    1 C9  
CONECT      H101   1 N10 
CONECT      H102   1 N10 
CONECT      H111   1 C11 
CONECT      H112   1 C11 
CONECT      H121   1 C12 
CONECT      H122   1 C12 
CONECT      H131   1 C13 
CONECT      H132   1 C13 
CONECT      H141   1 N14 
CONECT      H142   1 N14 
CONECT      H143   1 N14 
END   
HET    SPK             44
HETNAM     SPK SPERMINE (FULLY PROTONATED FORM)
FORMUL      SPK    C10 H30 N4 4+

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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