chebi:58557, please update 2D structure

[amorgat]

Dear ChEBI curators,

Please would you update the 2D structure of CHEBI:58557 with the attached molfile. It is correct, but it's just to be consistent in the way we draw molecules.

Thanks for your time,

Cheers, Anne ChEBI_58557_updated.txt

[G-Owen]

Hi Anne, We are having problems adding new structures at the moment (hopefully this will be fixed shortly). But the structure in the attached molfile is actually the enantiomer of CHEBI:58557. ACD-Name names the current (Fischer projection) structure as 2-acetamido-2-deoxy-6-O-phosphonato-D-mannose but it names the structure in your molfile as 2-acetamido-2-deoxy-6-O-phosphonato-L-mannose. Can you confirm whether you want the D- or the L- version?

Thanks, Gareth

[amorgat]

Hi Gareth,

Strange... I need N-acetyl-D-mannosamine 6-phosphate The Rhea reaction is: http://www.rhea-db.org/reaction?id=25253

I've just added a phopshate to CHEBI:17122 (N-acetyl-D-mannosamine). It should not change the stereochemistry???

[G-Owen]

Hi Anne,

No - adding the phosphate won't change the D- or L- assignment.

Unfortunately, the problem is that the 'zig-zag' structure for CHEBI:17122 is also wrong, but nobody has spotted the error in the 7 years since the (correct) Fischer projection structure was replaced as the default structure by the (incorrect) zig-zag structure!

I will sort the structures out as soon as the structure-editing problem has been fixed (hopefully later today). In the meanwhile, I will have a look and see if I can find any other problems arising from incorrect Fischer --> zig-zag conversions.

I will let you know when the structures are corrected (and also if I come across any more errors of this type.

Sorry for the inconvenience caused.

Gareth

[G-Owen]

Hi Anne,

Now sorted. I didn't come across any other errors of this type, but I can't guarantee that there aren't any! Sorry again for the problems caused.

Kind regards, Gareth