Marvin import the FASTA files if the comment line of it starts with a '>' character. If the sequence type is not specified, Marvin will try to guess it from the comment header and from the sequence.
Code : fasta See also FASTA import options
We import the following codes.
| Nucleic Acid Code | Meaning | Mnemonic | 
|---|---|---|
| A | A | Adenine | 
| C | C | Cytosine | 
| G | G | Guanine | 
| U | U | Uracil (only in RNA) | 
| T | U | Timin (only in DNA) | 
| R | A or G | puRine | 
| Y | C, T or U | pYrimidines | 
| K | G, T or U | bases which are Ketones | 
| M | A or C | bases with aMino groups | 
| S | C or G | Strong interaction | 
| W | A, T or U | Weak interaction | 
| B | not A (i.e. C, G, T or U) | B comes after A | 
| D | not C (i.e. A, G, T or U) | D comes after C | 
| H | not G (i.e., A, C, T or U) | H comes after G | 
| V | neither T nor U (i.e. A, C or G) | V comes after U | 
| N | A C G T U | aNy | 
| X | masked | |
| - | gap of indeterminate length | 
Ambigous nucleosides are represented with a labeled pseudoatom.
Code : fasta:dna, fasta:rna
| Code | Aminoacid | 
|---|---|
| A | Alanine | 
| B | Aspartic acid or Asparagine (represented with an atom list in side-chain) | 
| C | Cysteine | 
| D | Aspartic acid | 
| E | Glutamic acid | 
| F | Phenylalanine | 
| G | Glycine | 
| H | Histidine | 
| I | Isoleucine | 
| K | Lysine | 
| L | Leucine | 
| M | Methionine | 
| N | Asparagine | 
| O | Pyrrolysine | 
| P | Proline | 
| Q | Glutamine | 
| R | Arginine | 
| S | Serine | 
| T | Threonine | 
| U | Selenocysteine | 
| V | Valine | 
| W | Tryptophan | 
| Y | Tyrosine | 
| Z | Glutamic acid or Glutamine (represented with an atom list in side-chain) | 
| X | any (represented with an X pseudo atom at the α-Carbon atom side chain) | 
| * | translation stop (ignored) | 
| - | gap of indeterminate length (ignored) | 
Code : fasta:peptide
Not supported yet.