Hi Tristan,

I fully subscribe to your idea! I was quite surprised to see our model revised
with different glycan chain IDs upon PDB annotation. I imagine there must have
been some "administrative" reasoning behind this decision, but it's just a
nightmare for subsequent visualisation. And, to me at least, this change makes
no sense. Protein chains with covalently attached glycans are one biochemical,
structural and functional unit.

Best wishes,

Radu

> This suggestion violates a basic principle of data base theory.  A
> single data item cannot encode two pieces of information.
>
> I'm sorry if I was unclear, but I don't believe I was suggesting anything of
> the sort. Hopefully this example should make it more clear - I'm just
> suggesting a slight variation on the existing system, no more:
>
> If we start with model containing 3 protein chains A-C, with chain A
> containing amino acid residues 1-200, and 3 N-linked glycans with residues
> numbered, say, 1000-1005, 1020-1026 and 1040-1043 (a fairly common approach
> I've seen taken to the problem in the past, and one I've taken myself), then
> if I understand correctly after remediation we'll have a model with protein
> chains A-C and glycan chains D-F. The problem is, unless and until all the
> available visualisation software updates to automatically associate chains D-F
> to chain A based on linkage, the user just has to remember that chains D-F are
> actually the chain A glycans. This is a simple case, but things quickly become
> far more messy when you have multiple glycosylated species each with multiple
> glycans per chain. If, instead, the new chain assignments were something like
> "A, B, C, Ag1, Ag2, Ag3", then we have something that is far more immediately
> accessible to the user.
>
> ________________________________
> From: Dale Tronrud <de...@daletronrud.com>
> Sent: 04 December 2020 17:01
> To: Tristan Croll <ti...@cam.ac.uk>; CCP4BB@JISCMAIL.AC.UK
> <CCP4BB@JISCMAIL.AC.UK>
> Subject: Re: [ccp4bb] Coming July 29: Improved Carbohydrate Data at the PDB --
> N-glycans are now separate chains if more than one residue
>
>
>     This suggestion violates a basic principle of data base theory.  A
> single data item cannot encode two pieces of information.  The whole
> structure of CIF falls apart if this is done.
>
>     Does the new PDB convention contain a CIF record of the link that
> bridges between the protein chain and the, now separated, glycan chain?
>   If not, I think this is the principle failing of their new scheme.
>
> Dale Tronrud
>
> On 12/4/2020 12:06 AM, Tristan Croll wrote:
>> To go one step further: in large, heavily glycosylated multi-chain complexes
>> the assignment of a random new chain ID to each glycan will lead to
>> headaches for people building visualisations using existing viewers, because
>> it loses the easy name-based association of glycan to parent protein chain.
>> A suggestion: why not take full advantage of the mmCIF capability for
>> multi-character chain IDs, and name them by appending characters to the
>> parent chain ID? Using chain A as an example, perhaps the glycans could
>> become Ag1, Ag2, etc.?
>>
>>> On 4 Dec 2020, at 07:48, Luca Jovine <luca.jov...@ki.se> wrote:
>>>
>>> CC: pdb-l
>>>
>>> Dear Zhijie and Robbie,
>>>
>>> I agree with both of you that the new carbohydrate chain assignment
>>> convention that has been recently adopted by PDB introduces confusion, not
>>> just for PDB-REDO but also - and especially - for end users.
>>>
>>> Could we kindly ask PDB to improve consistency by either assigning a
>>> separate chain to all covalently attached carbohydrates (regardless of
>>> whether one or more residues have been traced), or reverting to the old
>>> system (where N-/O-glycans inherited the same chain ID of the protein to
>>> which they are attached)? The current hybrid solution hardly seems
>>> optimal...
>>>
>>> Best regards,
>>>
>>> Luca
>>>
>>>> On 3 Dec 2020, at 20:17, Robbie Joosten <robbie_joos...@hotmail.com>
>>>> wrote:
>>>>
>>>> Dear Zhijie,
>>>>
>>>> In generally I like the treatment of carbohydrates now as branched
>>>> polymers. I didn't realise there was an exception. It makes sense for
>>>> unlinked carbohydrate ligands, but not for N- or O-glycosylation sites as
>>>> these might change during model building or, in my case, carbohydrate
>>>> rebuilding in PDB-REDO powered by Coot. Thanks for pointing this out.
>>>>
>>>> Cheers,
>>>> Robbie
>>>>
>>>>> -----Original Message-----
>>>>> From: CCP4 bulletin board <CCP4BB@JISCMAIL.AC.UK> On Behalf Of Zhijie Li
>>>>> Sent: Thursday, December 3, 2020 19:52
>>>>> To: CCP4BB@JISCMAIL.AC.UK
>>>>> Subject: Re: [ccp4bb] Coming July 29: Improved Carbohydrate Data at the
>>>>> PDB -- N-glycans are now separate chains if more than one residue
>>>>>
>>>>> Hi all,
>>>>>
>>>>> I was confused when I saw mysterious new glycan chains emerging during
>>>>> PDB deposition and spent quite some time trying to find out what was
>>>>> wrong with my coordinates.  Then it occurred to me that a lot of recent
>>>>> structures also had tens of N-glycan chains.  Finally I realized that
>>>>> this
>>>>> phenomenon is a consequence of this PDB policy announced here in July.
>>>>>
>>>>>
>>>>> For future depositors who might also get puzzled, let's put it in a short
>>>>> sentence:  O- and N-glycans are now separate chains if it they contain
>>>>> more
>>>>> than one residue; single residues remain with the protein chain.
>>>>>
>>>>>
>>>>> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.wwpdb.org%2Fdocumentation%2Fcarbohydrate-remediation&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684263065%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=mBrkCJECFpZyCih4kOCcCvLT1GzQHxD5GD7bZDI9s1s%3D&amp;reserved=0
>>>>>
>>>>> "Oligosaccharide molecules are classified as a new entity type, branched,
>>>>> assigned a unique chain ID (_atom_site.auth_asym_id) and a new mmCIF
>>>>> category introduced to define the type of branching
>>>>> (_pdbx_entity_branch.type) . "
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> I found the differential treatment of single-residue glycans and
>>>>> multi-residue
>>>>> glycans not only bit lack of aesthetics but also misleading.  When a
>>>>> structure
>>>>> contains both NAG-NAG... and single NAG on N-glycosylation sites, it
>>>>> might
>>>>> be because of lack of density for building more residues, or because that
>>>>> some of the glycosylation sites are now indeed single NAGs (endoH etc.)
>>>>> while some others are not cleaved due to accessibility issues.    Leaving
>>>>> NAGs
>>>>> on the protein chain while assigning NAG-NAG... to a new chain, feels
>>>>> like
>>>>> suggesting something about their true oligomeric state.
>>>>>
>>>>>
>>>>> For example, for cryoEM structures, when one only builds a single NAG at
>>>>> a
>>>>> site does not necessarily mean that the protein was treated by endoH. In
>>>>> fact all sites are extended to at least tri-Man in most cases. Then why
>>>>> keeping some sites associated with the protein chain while others kicked
>>>>> out?
>>>>>
>>>>> Zhijie
>>>>>
>>>>>
>>>>>
>>>>> ________________________________
>>>>>
>>>>> From: CCP4 bulletin board <CCP4BB@JISCMAIL.AC.UK> on behalf of John
>>>>> Berrisford <j...@ebi.ac.uk>
>>>>> Sent: Thursday, July 9, 2020 4:39 AM
>>>>> To: CCP4BB@JISCMAIL.AC.UK <CCP4BB@JISCMAIL.AC.UK>
>>>>> Subject: [ccp4bb] Coming July 29: Improved Carbohydrate Data at the PDB
>>>>>
>>>>>
>>>>> Dear CCP4BB
>>>>>
>>>>> PDB data will shortly incorporate a new data representation for
>>>>> carbohydrates in PDB entries and reference data that improves the
>>>>> Findability and Interoperability of these molecules in macromolecular
>>>>> structures. In order to remediate and improve the representation of
>>>>> carbohydrates across the archive, the wwPDB has:
>>>>>
>>>>> *standardized Chemical Component Dictionary nomenclature
>>>>> following IUPAC-IUBMB recommendations
>>>>> *provided uniform representation for oligosaccharides
>>>>> *adopted Glycoscience-community commonly used linear descriptors
>>>>> using community tools
>>>>> *annotated glycosylation sites in PDB structures
>>>>>
>>>>> Starting July 29, 2020, users will be able to access the improved data
>>>>> via FTP
>>>>> or wwPDB partner websites. Detailed information about this project is
>>>>> available at the wwPDB website
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.wwpdb.org%2Fdocumentation%2Fcarbohydrate-remediation&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=6begIrz7OgNq8CecxMhAhm3n%2F4WPAMM%2F4dg9uwmlrcs%3D&amp;reserved=0>
>>>>> ; lists
>>>>> of impacted entries and chemical components will be published on this
>>>>> page
>>>>> after data release.
>>>>>
>>>>> The wwPDB has created a new ‘branched’ entity representation for
>>>>> polysaccharides, describing all the individual monosaccharide components
>>>>> of
>>>>> these in the PDB entry. As part of this process, we have standardized
>>>>> atom
>>>>> nomenclature of >1,000 monosaccharides in the Chemical Component
>>>>> Dictionary (CCD) and applied a branched entity representation to
>>>>> oligosaccharides for >8000 PDB entries. To guarantee unambiguous chemical
>>>>> description of oligosaccharides in the affected PDB entries, an explicit
>>>>> description of covalent linkage information between their monosaccharide
>>>>> units is included. In addition, wwPDB validation reports provide
>>>>> consistent
>>>>> representation for these oligosaccharides and include 2D representations
>>>>> based on the Symbol Nomenclature for Glycans (SNFG).
>>>>>
>>>>> To support the remediation of carbohydrate representation, software tools
>>>>> providing linear descriptors were developed in collaboration with the
>>>>> glycoscience community to enable easy translation of PDB data to other
>>>>> representations commonly used by glycobiologists. These include Condense
>>>>> IUPAC from GMML
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FGLYCAM-Web%2Fgmml&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=eA9rmh0D7QoyPzvwUBC%2BtIgZxdnQ72QWTx74CWQwpWM%3D&amp;reserved=0>
>>>>>  at University
>>>>> of Georgia, WURCS
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.com%2Fglyconavi%2Fpdb2glycan&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=TTLXk1QkfdzpSEozxxPuHf58f0EGYjnktH8uNOfoDe0%3D&amp;reserved=0>
>>>>>  from
>>>>> PDB2Glycan at The Noguchi Institute, Japan, and LINUCS
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.glycosciences.de%2Ftools%2Fpdb2linucs%2F&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=dXclDI7KsaKEajEuBxnbxY%2BjshExxyESN2RKDgJdr%2Fo%3D&amp;reserved=0>
>>>>>  from pdb-care at
>>>>> Germany.
>>>>>
>>>>> Furthermore, to ensure continued Findability of 118 common
>>>>> oligosaccharides (e.g., sucrose, Lewis Y antigen), we have expanded the
>>>>> Biologically Interesting molecule Reference Dictionary (BIRD
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.wwpdb.org%2Fdata%2Fbird&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=feM%2F6RPoFqQwdIABus%2BD60JSTSbdi2UzsV62IRKX%2Fvg%3D&amp;reserved=0>
>>>>> ) that contains the covalent linkage
>>>>> information and common synonyms for such molecules.
>>>>>
>>>>> wwPDB has also used this opportunity to improve the organization of
>>>>> chemical synonyms in the CCD by introducing a new
>>>>> _pdbx_chem_comp_synonyms data category. This will enable more
>>>>> comprehensive capture of alternative names for small molecules in the
>>>>> PDB.
>>>>> To minimize disruption to users, the legacy data item,
>>>>> _chem_comp.pdbx_synonyms, will be retained for a transition period
>>>>> through 2021.
>>>>>
>>>>> The carbohydrate remediation project is a wwPDB collaborative project
>>>>> that
>>>>> is carried out principally by RCSB PDB
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.rcsb.org%2F&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=28mQbs4C%2FKygkU5GY1mNYzfX6Y1a76onFlsFwcpsVZU%3D&amp;reserved=0>
>>>>>  at Rutgers,
>>>>> The State University of New Jersey and is funded by NIGMS grant U01
>>>>> CA221216 in collaboration with Complex Carbohydrate Research Center
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ccrc.uga.edu%2F&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=gkU8DWkdVXFE%2BCjcV2mEbU6I%2FECM5Dlq2XCErqtQEKk%3D&amp;reserved=0>
>>>>>  at the University of Georgia.
>>>>>
>>>>> If you have any comments or queries regarding the changes to carbohydrate
>>>>> representation, please visit the wwPDB website
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.wwpdb.org%2Fdocumentation%2Fcarbohydrate-remediation&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=6begIrz7OgNq8CecxMhAhm3n%2F4WPAMM%2F4dg9uwmlrcs%3D&amp;reserved=0>
>>>>>  or
>>>>> contact us at deposit-h...@mail.wwpdb.org <mailto:deposit-
>>>>> h...@mail.wwpdb.org> .
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Regards
>>>>>
>>>>>
>>>>>
>>>>> John
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>> John Berrisford
>>>>>
>>>>> PDBe
>>>>>
>>>>> European Bioinformatics Institute (EMBL-EBI)
>>>>>
>>>>> European Molecular Biology Laboratory
>>>>>
>>>>> Wellcome Trust Genome Campus
>>>>>
>>>>> Hinxton
>>>>>
>>>>> Cambridge CB10 1SD UK
>>>>>
>>>>> Tel: +44 1223 492529
>>>>>
>>>>>
>>>>>
>>>>> https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.pdbe.org%2F&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=jtQQunJvDpFvpPIo3b%2BgX0ETtF5TeAvPE07SMtoClQs%3D&amp;reserved=0
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.pdbe.org%2F&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=jtQQunJvDpFvpPIo3b%2BgX0ETtF5TeAvPE07SMtoClQs%3D&amp;reserved=0>
>>>>>
>>>>> https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.facebook.com%2Fproteindatabank&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C0%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=bPsYJQXaFV05F%2FeeVBASaECt2h13U4HJVNzrfLs2w5k%3D&amp;reserved=0
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.facebook.com%2Fproteindatabank&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C0%7C637426199684273018%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=bPsYJQXaFV05F%2FeeVBASaECt2h13U4HJVNzrfLs2w5k%3D&amp;reserved=0>
>>>>>
>>>>> https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Ftwitter.com%2FPDBeurope&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684282976%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=mphXsd3vaMR3wlOQ7%2F7p%2FaI3MKG3LPCGSyfVNg%2FCwrg%3D&amp;reserved=0
>>>>> <https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Ftwitter.com%2FPDBeurope&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684282976%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=mphXsd3vaMR3wlOQ7%2F7p%2FaI3MKG3LPCGSyfVNg%2FCwrg%3D&amp;reserved=0>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ________________________________
>>>>>
>>>>> To unsubscribe from the CCP4BB list, click the following link:
>>>>> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.jiscmail.ac.uk%2Fcgi-bin%2FWA-JISC.exe%3FSUBED1%3DCCP4BB%26A%3D1&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684282976%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=stAI21mrmOvHtv0R5FcepDeFB8CRDK%2FkbPbf8Ffk3Wo%3D&amp;reserved=0
>>>>>
>>>>>
>>>>> ________________________________
>>>>>
>>>>> To unsubscribe from the CCP4BB list, click the following link:
>>>>> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.jiscmail.ac.uk%2Fcgi-bin%2FWA-JISC.exe%3FSUBED1%3DCCP4BB%26A%3D1&amp;data=04%7C01%7Cluca.jovine%40KI.SE%7C1d790a0717ce4217c7a308d897c01b47%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C1%7C637426199684282976%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=stAI21mrmOvHtv0R5FcepDeFB8CRDK%2FkbPbf8Ffk3Wo%3D&amp;reserved=0
>>>>
>>>>
>>>> ########################################################################
>>>>
>>>> To unsubscribe from the CCP4BB list, click the following link:
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-- 
Radu Aricescu
MRC Laboratory of Molecular Biology
Francis Crick Avenue
Cambridge Biomedical Campus
Cambridge CB2 0QH, U.K.
tel: +44-(0)1223-267049
fax: +44-(0)1223-268305
www: http://www2.mrc-lmb.cam.ac.uk/group-leaders/a-to-g/radu-aricescu

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