Dear Sahil,I quickly  read part of the paper that you sent. It is very 
interesting. Thank you for sharing. Looking forward to read it in details.Best 
regards,Samer
    On Friday, August 7, 2020, 02:19:20 PM GMT+1, Sahil Batra 
<artabli...@gmail.com> wrote:  
 
 Hi Samer,
I came across this interesting article recently, that discusses the 
significance of unusually high content of Met in the polymerization inducing 
domain of spider silk protein 
(https://www.nature.com/articles/s41467-019-12365-5). 
Methionines provide a 'mobilization' to the hydrophobic core (something which 
no other aliphatic amino acid can), which allows this domain to access 
conformational space, and apparently is important for dimerization. It does not 
directly answer your question, but seems an interesting read.
Best regards,
Sahil Batra


On Fri, Aug 7, 2020 at 5:44 PM samer halabi 
<000030c2162795b2-dmarc-requ...@jiscmail.ac.uk> wrote:

Dear All,I am working on structures where Methionine is important in binding of 
peptides to the MHC protein complex.Would anyone kindly like to share their 
knowledge about anything they find it important about this particular amino 
acid structurally? Sharing a paper or just few comments will be greatly 
appreciated.
I know my question may sound very general (and kind of superficial) but there 
is definitely a reason, that I don't know and might be already known, why 
certain peptides (like CLIP) are rich in Methionine, and that lowers their 
affinity of binding.Thank you and sorry to disturb you all.Best regards,Samer

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