Re: [ccp4bb] electron density close Histidine side chain

2020-07-21 Thread samer halabi
ot judge only from one angle. You could of course try to fit it in and see how it looks. Cheers,Arne On Mon, Jul 20, 2020 at 6:17 PM samer halabi <30c2162795b2-dmarc-requ...@jiscmail.ac.uk> wrote: Hello all, I have few blobs in an MHC II structure I am working on, especially opposi

Re: [ccp4bb] electron density close Histidine side chain

2020-07-21 Thread samer halabi
,Samer On Monday, July 20, 2020, 05:39:23 PM GMT+1, Nils Marechal <4954a024d277-dmarc-requ...@jiscmail.ac.uk> wrote: ‌Dear Samer, What king of cryo-protectant did you use ? Such a bent density, with that size, looks like an ethylene-diol. Best regards, Nils Marechal De :

Re: [ccp4bb] electron density close Histidine side chain

2020-07-21 Thread samer halabi
Sent: Monday, July 20, 2020 5:27:37 PM To: CCP4BB@JISCMAIL.AC.UK Subject: Re: [ccp4bb] electron density close Histidine side chain ‌Dear Samer, What king of cryo-protectant did you use ? Such a bent density, with that size, looks like an ethylene-diol. Best regards, Nils Marech

Re: [ccp4bb] electron density close Histidine side chain

2020-07-21 Thread samer halabi
ty 13 Oak Drive Hamilton, NY 13346 email: rrowl...@colgate.edu  On Mon, Jul 20, 2020 at 12:17 PM samer halabi <30c2162795b2-dmarc-requ...@jiscmail.ac.uk> wrote: Hello all, I have few blobs in an MHC II structure I am working on, especially opposite to Histidine as in the accompanying s

[ccp4bb] Structural Importance of Methionine

2020-08-07 Thread samer halabi
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

Re: [ccp4bb] Structural Importance of Methionine

2020-08-07 Thread samer halabi
o 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 <30c2162795

Re: [ccp4bb] Structural Importance of Methionine

2020-08-07 Thread samer halabi
flexible side chains of Methionines of the receptor protein (SRP54/Ffh or Get3) can accommodate a variety of hydrophobic substrates in the protein binding clefts.   I hope this helps you.   All the best,   Pascal   On Fri, Aug 7, 2020 at 5:14 AM samer halabi <30c216279

Re: [ccp4bb] Structural Importance of Methionine

2020-08-07 Thread samer halabi
surface and it wasn't too picky about the nature of the other surface.  https://jvi.asm.org/content/91/2/e01085-16 Best of luck! -Jesscia On Fri, Aug 7, 2020 at 7:40 AM samer halabi <30c2162795b2-dmarc-requ...@jiscmail.ac.uk> wrote: Hello Rachelle,Many thanks for sharing the link a

[ccp4bb] Problems with Protein secretion from HighFive cells using Baculovirus system

2019-05-20 Thread samer halabi
Dear All,Sorry to be spamming you all.However, I would greatly appreciate if you please could let me know only if you had recently experienced the same problems with not being able to secrete a protein complex (that you used to be able to secrete) using HighFive cells using Lonza insect xpress

[ccp4bb] Research Technician opportunity in the lab of Prof. Jim Kaufman at the University of Edinburgh

2021-06-04 Thread samer halabi
Dear All,The lab of Prof. Jim Kaufman at the University of Edinburgh is looking for a Research Technician to help us understand how chicken MHC molecules have such profound effects on resistance and susceptibility to economically-important diseases. We will begin by using protein expression sys

[ccp4bb] recombinant protein-based fluorophores

2021-12-06 Thread samer halabi
Dear All,Sorry for disturbing you all with my current inquiry. However, I am in the process of designing and expressing soluble proteins and I thought to ask for your valuable advice. 1-What would be your first choice (protein-based) fluorophore to link it to the soluble protein at its C-terminu

[ccp4bb] High-affinity binding Fab to a known epitope amino acid sequence

2021-12-12 Thread samer halabi
Dear All,Sorry to be disturbing you all, however the valuable input I get each time I have an inquiry from the mailing list members, encourages me to inquire again. Do you know of (or use) a Fab with high-affinity of binding to its epitope (KD in the Picomolar pM or the Femtomolar fM range), whe

Re: [ccp4bb] High-affinity binding Fab to a known epitope amino acid sequence

2021-12-13 Thread samer halabi
, Danton From: CCP4 bulletin board on behalf of samer halabi <30c2162795b2-dmarc-requ...@jiscmail.ac.uk> Sent: December 12, 2021 10:31 AM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] High-affinity binding Fab to a known epitope amino acid sequence Dear All, Sorry to be disturbing y

[ccp4bb] viral protein BLAST

2022-01-16 Thread samer halabi
Dear All, Sorry to be disturbing you with my new inquiry. I always got great and trustworthy results using FUGUE (Protein homology recognition using environment-specific amino acid substitution tables:  https://mizuguchilab.org/fugue/prfsearch.html)  I use an amino acid sequence of a viral protei

[ccp4bb] Tagging a membrane protein after the Signal peptide

2023-06-22 Thread samer halabi
Dear All, Sorry to be disturbing you all with my inquiry. I am tagging a membrane protein (MHC I) just after the Signal peptide with either HA-tag or Myc-tag and expressing it in mammalian cells. I am able to detect that protein by immunoprecipitation followed by Western blotting using anti-Myc