Search found 76 matches

by zcx@umich.edu
Tue Jul 09, 2024 6:49 pm
Forum: Main Forum
Topic: How to compare multiple protein structures with TM-align
Replies: 1
Views: 2531

Re: How to compare multiple protein structures with TM-align

AlphaFold structures of all human proteins can be downloaded via the alphafold database https://ftp.ebi.ac.uk/pub/databases/alphafold/latest/UP000005640_9606_HUMAN_v4.tar You can then perform pairwise TM-align alignments. You probably would want to use the "-fast" option of the TM-align (C...
by zcx@umich.edu
Thu Jun 27, 2024 11:17 am
Forum: Main Forum
Topic: USalign RMSD
Replies: 1
Views: 3667

Re: USalign RMSD

To calculate the RMSD, a Kabsch superimposition (a.k.a. RMSD superimposition) is performed on the subset of aligned residue pairs and the RMSD can be calculated by: RMSD = sqrt ( 1/Lali \sum_{i=1}^Lali d_i ^2 ) where Lali is the number of aligned residue pairs, d_i is the distance between the i-th a...
by zcx@umich.edu
Thu May 02, 2024 7:34 pm
Forum: Main Forum
Topic: Biolip: pocket - chain relationship
Replies: 2
Views: 60050

Re: Biolip: pocket - chain relationship

8stw is a homo-hexamer, where each chain binds to one PLP and one HEM. Therefore, the full biological assembly has 6 different PLP and 6 different HEM ligands for the 6 different chains. Therefore, it is not true that the same ligand binds to 6 different chains simultaneously.
by zcx@umich.edu
Thu May 02, 2024 7:21 pm
Forum: Main Forum
Topic: Restricting TM-align to a given superposition
Replies: 4
Views: 106876

Re: Restricting TM-align to a given superposition

I am afraid what you request is not implementable. It is not possible to implement rotation but no translation.
by zcx@umich.edu
Thu May 02, 2024 7:11 pm
Forum: Main Forum
Topic: Alignment based on pLDDT
Replies: 1
Views: 107895

Re: Alignment based on pLDDT

No, US-align cannot consider pLDDT score.
by zcx@umich.edu
Tue Apr 16, 2024 8:15 am
Forum: Main Forum
Topic: Restricting TM-align to a given superposition
Replies: 4
Views: 106876

Re: Restricting TM-align to a given superposition

I am not exactly sure what you mean. If you want to extract the alignment based on a pair of superimposed structure, you can use the "se" program from https://github.com/pylelab/USalign
by zcx@umich.edu
Tue Apr 16, 2024 8:13 am
Forum: Main Forum
Topic: US Align - superimposition of all proteins
Replies: 3
Views: 59064

Re: US Align - superimposition of all proteins

No, -dir1 cannot work with -o.
by zcx@umich.edu
Fri Mar 15, 2024 12:17 pm
Forum: Main Forum
Topic: BioLip column names clarification
Replies: 5
Views: 74630

Re: BioLip column names clarification

If there are multiple instances of the same type of ligand in the same chain, they will be sequentially labeled as 1,2,3, ... by ligand serial number, For example, PDB 117e chain B has four copies of MN ligands, which have ligand serial number of 1, 2, 3, and 4, respectively. I am afraid you made a ...
by zcx@umich.edu
Wed Mar 06, 2024 5:40 pm
Forum: Main Forum
Topic: BioLip column names clarification
Replies: 5
Views: 74630

Re: BioLip column names clarification

“Binding Site Number Code” is the index of ligand binding sites. For example, PDB 10mh chain A has three ligands: two DNAs and one SAH. Their binding sites are sequentially numbered BS01, BS02, BS03, respectively.
by zcx@umich.edu
Wed Mar 06, 2024 5:38 pm
Forum: Main Forum
Topic: BioLip column names clarification
Replies: 5
Views: 74630

Re: BioLip column names clarification

Residue sequence number (i.e., column 23 - 26 in PDB format file or _atom_site.auth_seq_id in mmCIF format).