How To Get "Journals" Information From Genbank Entry Using Python

Question

[fm271]

LOCUS       AAW04511                  12 aa            linear   PAT 15-DEC-2004
DEFINITION  Sequence 89 from patent US 6790938.
ACCESSION   AAW04511
VERSION     AAW04511.1  GI:56612658
DBSOURCE    accession AAW04511.1
KEYWORDS    .
SOURCE      Unknown.
  ORGANISM  Unknown.
            Unclassified.
REFERENCE   1  (residues 1 to 12)
  AUTHORS   Berchtold,P. and Escher,R.F.A.
  TITLE     Anti-GPIIb/IIIa recombinant antibodies
  JOURNAL   Patent: US 6790938-A 89 14-SEP-2004;
            ASAT AG Applied Science & Technology; Zug;
            DEX;
  REMARK    CAMBIA Patent Lens: US 6790938
FEATURES             Location/Qualifiers
     source          1..12
                     /organism="unknown"
ORIGIN      
        1 gsgsylgyyf dy
//

In the above genbank entry, how can I get "journal" and "remark" information present in "REFERENCE". I can access authors and title but not journal and remark information.

from Bio import Entrez, SeqIO
handle = Entrez.efetch(db="protein", id="AAW04511",rettype="gb")
seq_record = SeqIO.read(handle, "genbank")
seqAnn = seq_record.annotations
seqAnn['references'][0].title
seq_record.annotations['references'][0].authors

Any help will be appreciated.

[Neilfws]

The line beginning "seqAnn" seems to be irrelevant to your problem.

[fm271]

sorry, I forgot to include the line. Edited. but Peter has already answered this.

Answer 1

[Peter]

Thank you for posting a self contained example :)

>>> from Bio import Entrez, SeqIO
>>> Entrez.email = "[e-mail]"
>>> handle = Entrez.efetch(db="protein", id="AAW04511",rettype="gb")
>>> seq_record = SeqIO.read(handle, "genbank")
>>> seq_record.annotations['references'][0].authors
'Berchtold,P. and Escher,R.F.A.'
>>> seq_record.annotations['references'][0].title
'Anti-GPIIb/IIIa recombinant antibodies'
>>> seq_record.annotations['references'][0].journal
'Patent: US 6790938-A 89 14-SEP-2004; ASAT AG Applied Science & Technology; Zug; DEX;'
>>> seq_record.annotations['references'][0].comment
'CAMBIA Patent Lens: US 6790938'

I'm surprised you didn't guess it was just .journal given you'd found .title and .authors fine. Here's a useful tip for exploring a new data structure in Python is the dir(...) function will list all the attributes and methods (for now ignore all the ones starting with an underscore):

>>> dir(seq_record.annotations['references'][0])
[..., 'authors', 'comment', 'consrtm', 'journal', 'location', 'medline_id', 'pubmed_id', 'title']

[fm271]

Thanks for reply. I remember I tried this but I might be doing something wrong.