How SWISS-MODEL works


Steps
1
Search for suitable templates
2
Check sequence identity with target
3
Create ProModII jobs
4
Generate models with ProModII
5
Energy minimisation with Gromos96
 
First Approach Mode (regular)
 
First Approach Mode (with user-defined templates)
 
 
Optimise Mode


Step Program/Method Database Action
1 BLASTP2 ExNRL-3D Will find all similarities of target sequence with sequences of known structure.
2 SIM - Will select all templates with sequence identities above 25% and projected model size larger than 20 residues. Furthermore, this step will detect domains which can be modelled based on unrelated templates
3 - - Generate ProModII input files
4 ProModII ExPDB Generate all models
5 Gromos96 - Energy minimsation of all models


Sample First Approach Request

Submitted: SWISS-PROT AC code P25445
FASL RECEPTOR PRECURSOR (APOPTOSIS-MEDIATING SURFACE ANTIGEN FAS)

Obtained: Two models
One for the DEATH domain (intracellular) and one for the ligand domain (extracellular)

Step
Trace log
1
AlignMaster output
============================================================

Length of target sequence: 335 residues

Searching sequences of known 3D structures
Found 11DDF.pdb with P(N)=3.4e-59
Found 11CDF.pdb with P(N)=1.6e-13
Found 11EXT.pdb with P(N)=1.5e-09
Found 21EXT.pdb with P(N)=1.5e-09
Found 21NCF.pdb with P(N)=1.5e-09
Found 21TNR.pdb with P(N)=1.5e-09
Found 11NCF.pdb with P(N)=1.5e-09


Extracting template sequences
2
Running pair-wise alignments with target sequence
Sequence identity of templates with target:

11DDF.pdb: 100 % identity
11CDF.pdb: 37.33 % identity
11EXT.pdb: 26.4 % identity
21EXT.pdb: 26.4 % identity
21NCF.pdb: 26.4 % identity
21TNR.pdb: 26.4 % identity
11NCF.pdb: 26.4 % identity

Looking for template groups
Global alignment overview:

Taget Sequence: |=======================================================|
11DDF.pdb       |                                    -------------------
11CDF.pdb       |         ---------------                              
11EXT.pdb       |        -------------                                 
21EXT.pdb       |        -------------                                 
21NCF.pdb       |        -------------                                 
21TNR.pdb       |        -------------                                 
11NCF.pdb       |        -------------                                 

3
AlignMaster found 2 regions to model separately:
1: Using template(s)   11DDF.pdb
2: Using template(s)   11CDF.pdb 11EXT.pdb 11NCF.pdb 21EXT.pdb 21NCF.pdb 21TNR.pdb

Creating Batch files for ProMod (if any):

Exiting AlignMaster
4
ProModII trace log for Batch.1
============================================================

SPDBV: Loading Template
SPDBV: Loading Raw Sequence
SPDBV: Generating Structural Alignment
SPDBV: Aligning Raw Sequence
SPDBV: Refining Raw Sequence Alignment
SPDBV: Averaging Sidechains
SPDBV: Adding Missing Sidechains
SPDBV: Dumping Sequence Alignment
SPDBV: Dumping Preliminary Model
SPDBV: Done.

ProModII trace log for Batch.2
============================================================

SPDBV: Loading Template
SPDBV: Loading Template
SPDBV: Loading Template
SPDBV: Loading Template
SPDBV: 21NCF : some amino acids sidechain atoms are missing --> reconstructing concerned sidechains.
SPDBV: Loading Template
SPDBV: 21TNR : some amino acids sidechain atoms are missing --> reconstructing concerned sidechains.
SPDBV: Loading Raw Sequence
SPDBV: Iterative Template Fitting
SPDBV: Iterative Template Fitting
SPDBV: Iterative Template Fitting
SPDBV: Iterative Template Fitting
SPDBV: Generating Structural Alignment
SPDBV: Aligning Raw Sequence
SPDBV: Refining Raw Sequence Alignment
SPDBV: Weighting Backbones
SPDBV: Averaging Sidechains
SPDBV: Adding Missing Sidechains
SPDBV: Trying Ligating from residue 137 to 139
SPDBV: Trying Ligating from residue 137 to 140
SPDBV:   Number of Ligations found:  (2)
SPDBV: Trying Ligating from residue 153 to 155
SPDBV: Trying Ligating from residue 153 to 156
SPDBV:   Number of Ligations found:  (1)
SPDBV: Trying Ligating from residue 159 to 161
SPDBV: Trying Ligating from residue 158 to 161
SPDBV:   Number of Ligations found:  (1)
SPDBV: Building CSP loop from residue 88 to 90
SPDBV: Building CSP loop from residue 87 to 90
SPDBV: Building CSP loop from residue 87 to 91
SPDBV: Dumping Sequence Alignment
SPDBV: Dumping Preliminary Model
SPDBV: Done.
5
Gromos96 trace log for Batch.1
============================================================

Now running PROCS1 on file batch-procs0.dat ... Done.
Now running PROCS2 on file batch-procs1.dat ... Done.
Now running PROGMT on file batch-procs2.dat ... Done.
Now running PROGCH on file batch-procs2.dat ... Done.
Now running PROMD on file batch-progch.dat ... Done.
Now running PROMD on file batch-promd0.dat ... Done.
Detection of SS-Bonds within batch ... 

Gromos96 trace log for Batch.2
============================================================

Now running PROCS1 on file batch-procs0.dat ... Done.
Now running PROCS2 on file batch-procs1.dat ... Done.
Now running PROGMT on file batch-procs2.dat ... Done.
Now running PROGCH on file batch-procs2.dat ... Done.
Now running PROMD on file batch-progch.dat ... Done.
Now running PROMD on file batch-promd0.dat ... Done.
Detection of SS-Bonds within batch ... 
   >SS-Bonds detection:  #1:  91 <-> 105
   >SS-Bonds detection:  #2:  66 <-> 81
   >SS-Bonds detection:  #3:  69 <-> 89
   >SS-Bonds detection:  #4:  25 <-> 44
   >SS-Bonds detection:  #5:  47 <-> 63


Sample Co-ordinate file

Record type
Annotation
HEADER Header line.
TITLE User-supplied title or SWISS-PROT entry DE line.
EXPDTA Always THEORETICAL MODEL.
JRNL Please site these references in case of publication
REMARK 3 Brief description of modelling method and minimisation parameters.
REMARK 5 Description of the templates used to build the model.
REMARK 999 Description of model sequence with respect to corresponding SWISS-PROT entry.
SEQALI Sequence alignment generated by ProModII.

HEADER    SWISS-MODEL (Automated Protein Modelling Server)
ACCODE    P25445_C00002
DATE      19-FEB-1998
TITLE     FASL RECEPTOR PRECURSOR (APOPTOSIS-MEDIATING SURFACE ANTIGEN FAS)
TITLE   2 (APO-1 ANTIGEN) (CD95 ANTIGEN)
COMPND    MOL_ID: 1;
COMPND   2 MOLECULE: FASL RECEPTOR PRECURSOR (APOPTOSIS-MEDIATING SURFACE ANTIGEN FAS);
COMPND   3 GENE NAME: APT1 OR FAS;
SOURCE    MOL_ID: 1;
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS ;
SOURCE   3 ORGANISM_COMMON: HUMAN;
KEYWDS    APOPTOSIS; RECEPTOR; GLYCOPROTEIN; TRANSMEMBRANE; REPEAT; SIGNAL.
EXPDTA    THEORETICAL MODEL                                     
AUTHOR    ProMod (SEE REFERENCE IN JRNL Records)                               
JRNL     1  AUTH   M.C.PEITSCH
JRNL     1  TITL   PROTEIN MODELING BY EMAIL
JRNL     1  REF    BIO/TECHNOLOGY                V.  13   658 1995
JRNL     1  REFN   ISSN 0733-222X
JRNL     2  AUTH   M.C.PEITSCH
JRNL     2  TITL   PROMOD AND SWISS-MODEL: INTERNET-BASED TOOLS FOR
JRNL     2  TITL 2 AUTOMATED COMPARATIVE PROTEIN MODELLING.
JRNL     2  REF    BIOCHEM. SOC. TRANS.          V.  24   274 1996
JRNL     3  AUTH   M.C.PEITSCH,N.GUEX
JRNL     3  TITL   LARGE-SCALE COMPARATIVE PROTEIN MODELLING.
JRNL     3  REF    PROTEOME RESEARCH: NEW FRONTIERS IN FUNCTIONAL 
JRNL	 3  REF  2 GENOMICS.			          177 1997
JRNL     4  AUTH   M.C.PEITSCH,N.GUEX
JRNL     4  TITL   SWISS-MODEL AND THE SWISS-PDBVIEWER: AN
JRNL     4  TITL 2 ENVIRONMENT FOR COMPARATIVE PROTEIN MODELLING
JRNL     4  REF    ELECTROPHORESIS               V.  18  2714 1997
REMARK   1
REMARK   2
REMARK   2 RESOLUTION.  NOT APPLICABLE.  SEE REMARK 4.
REMARK   3
REMARK   3 REFINEMENT.  NONE.
REMARK   3
REMARK   3 MODELLING METHOD.
REMARK   3   PROGRAM     : PROMOD 2.0
REMARK   3   AUTHORS     : N.GUEX,M.C.PEITSCH
REMARK   3
REMARK   3 ENERGY MINIMSATION.
REMARK   3   PROGRAM            : GROMOS96
REMARK   3   AUTHORS            : VAN GUNSTEREN
REMARK   3   PARAMETER          : IFP43B1
REMARK   3   TOPOLOGY FILE      : MTB43B1
REMARK   3   METHOD      1      : STEEPEST DESCENT
REMARK   3	 CYCLES      1  : 200
REMARK   3	 CONSTRAINTS 1  : 25 / C-FACTORS
REMARK   3   METHOD      2      : CONJUGATE GRADIENT
REMARK   3	 CYCLES      2  : 300
REMARK   3	 CONSTRAINTS 2  : 2500 / C-FACTORS
REMARK   3
REMARK   4                                                                     
REMARK   4 THE COORDINATES IN THIS ENTRY REPRESENT A MODEL STRUCTURE.          
REMARK   4 PROTEIN DATA BANK CONVENTIONS REQUIRE THAT *CRYST1* AND            
REMARK   4 *SCALE* RECORDS BE INCLUDED, BUT THE VALUES ON THESE    
REMARK   4 RECORDS ARE MEANINGLESS.
REMARK   5                                                                   
REMARK   5 THIS MODEL IS BASED UPON THE COORDINATES OF:
REMARK   5
REMARK   5 PDB ENTRY 1CDF.pdb     
REMARK   5     RECEPTOR                                26-MAR-96   
REMARK   5     THREE-DIMENSIONAL THEORETICAL MODEL OF THE LIGAND BINDING 
REMARK   5     DOMAIN OF THE HUMAN B CELL RECPTOR CD40                   
REMARK   5
REMARK   5 PDB ENTRY 1EXT.pdb     CHAIN A
REMARK   5     SIGNALLING PROTEIN                      03-JUL-96   
REMARK   5     EXTRACELLULAR DOMAIN OF THE 55KDA TUMOR NECROSIS FACTOR   
REMARK   5     RECEPTOR.  CRYSTALLIZED AT PH3.7 IN P 21 21 21.           
REMARK   5
REMARK   5 PDB ENTRY 1EXT.pdb     CHAIN B
REMARK   5     SIGNALLING PROTEIN                      03-JUL-96   
REMARK   5     EXTRACELLULAR DOMAIN OF THE 55KDA TUMOR NECROSIS FACTOR   
REMARK   5     RECEPTOR.  CRYSTALLIZED AT PH3.7 IN P 21 21 21.           
REMARK   5
REMARK   5 PDB ENTRY 1NCF.pdb     CHAIN B
REMARK   5     SIGNALLING PROTEIN                      12-OCT-94   
REMARK   5
REMARK   5 PDB ENTRY 1TNR.pdb     CHAIN R
REMARK   5     COMPLEX(LYMPHOKINE/RECEPTOR)            09-MAY-94   
REMARK   5
REMARK 999
REMARK 999 SEQUENCE
REMARK 999 P25445_C00002 SWS  P25445       1 -    38 NOT IN ATOMS LIST
REMARK 999 P25445_C00002 SWS  P25445     200 -   335 NOT IN ATOMS LIST
DBREF  P25445_C00002    1    161 SWS  P25445 FASA_HUMAN    39    199
SEQALI    
SEQALI    P25445      1   MLGIWTLLPL VLTSVARLSS KSVNAQVTDI NSKGLELRKT VTTVETQNLE
SEQALI    11CDF       1                                               TACREKQYLI
SEQALI    11EXT       1                                               SVCPQGKYIH
SEQALI    21EXT       1                                            MD SVCPQGKYIH
SEQALI    21NCF       1                                                VCPQGKYIH
SEQALI    21TNR       1                                                 CPQGKYIH
SEQALI                                                                    .   . 
SEQALI    P25445                                                           sssss
SEQALI    11CDF                                                            sssss
SEQALI    11EXT                                                            sssss
SEQALI    21EXT                                                            sssss
SEQALI    21NCF                                                            sssss
SEQALI    21TNR                                                            sss  
SEQALI    
SEQALI    
SEQALI    P25445     51   GLHHDGQFCH KPCPPGERKA RDCTVNGDEP DCVPCQEGKE YTDKAHFSSK
SEQALI    11CDF      11   ---NS-Q-CC SLCQPGQKLV SDCTEF-TET ECLPCGES-E FLDTWNRETH
SEQALI    11EXT      11   PQNNS-I-CC TKCHKGTYLY NDCPGPGQDT DCRECESG-S FTASENHLRH
SEQALI    21EXT      13   PQ-NNSI-CC TKCHKGTYLY NDCPGPGQDT DCRECESG-S FTASENHLRH
SEQALI    21NCF      10   --PQNNSICC TKCHKGTYLY NDCPGPGQDT DCRECESG-S FTASENHLRH
SEQALI    21TNR       9   P-QNN-SICC TKCHKGTYLY NDCPGPGQDT DCRECESG-S FTASENHLRH
SEQALI                            *    *  *      **     .  .*  *  .   .    .    
SEQALI    P25445                 sss ss   sssss            sssss                
SEQALI    11CDF                 s ss ss   sssss            sssss                
SEQALI    11EXT                 s ss ss   sssss            sssss  s s s         
SEQALI    21EXT                 s ss ss   sssss            sssss  s s s         
SEQALI    21NCF                  sss ss   sssss            sssss  s s s         
SEQALI    21TNR                    s ss   sssss            sssss  s s s         
SEQALI    
SEQALI    
SEQALI    P25445    101   CRRCRLCDEG HGLEVEINCT RTQNTKCRCK PNFFCNST-- VCEHCDPCTK
SEQALI    11CDF      54   CHQHKYCDPN LGLRVQQKGT SETDTICTCE EGWHCTSE-- ACESCVLHRS
SEQALI    11EXT      58   CLSCSKCRKE MGQVEISSCT VDRDTVCGCR KNQYRHYWSE NLFQCFNCSL
SEQALI    21EXT      60   CLSCSKCRKE MGQVEISSCT VDRDTVCGCR KNQYRHYWSE NLFQCFNCSL
SEQALI    21NCF      57   CLSCSKCRKE MGQVEISSCT VDRDTVCGCR KNQYRHYWSE NLFQCFNCSL
SEQALI    21TNR      56   CLSCSKCRKE MGQVEISSCT VDRDTVCGCR KNQYRHYWSE NLFQCFNCSL
SEQALI                    *     *     *       *    .* * *                 *     
SEQALI    P25445                        sss          sss    sssss        sssss  
SEQALI    11CDF                         sss          sss    sss            sss  
SEQALI    11EXT            sss          sss          sss    sssssss    sssssss  
SEQALI    21EXT            sss          sss          sss    sssssss    sssssss  
SEQALI    21NCF            sss          sss          sss    sssssss    sssssss  
SEQALI    21TNR            sss          sss          sss    sssssss    sssssss  
SEQALI    
SEQALI    
SEQALI    P25445    149   CEHGI-IKEC TLT-SNTKCK EEGSRSNLGW LCLLLLPIPL IVWVKRKEVQ
SEQALI    11CDF     102   CSPGFGVKQI ATGVSDTICE ---------- ---------- ----------
SEQALI    11EXT     108   CLNGTVHLSC QEKQNTVCTC HAGFFLRENE CVSCSNCKKS LECTKLCLPQ
SEQALI    21EXT     110   CLNGTVHLSC QEKQNTVCTC HAGFFLRENE CVSCSNCKKS LECTKLCLP-
SEQALI    21NCF     107   CLN-GTVHLS CQEKQNTVCT CHAGFFLREN ECVSCSN--- ----------
SEQALI    21TNR     106   CLNG------ -------TVH LSCQEKQNTV CTCHAGFFLR ENECVSC---
SEQALI                    *                                                     
SEQALI    P25445            sss s         sssss ssssss                          
SEQALI    11CDF                sss          sss                                 
SEQALI    11EXT             sssss          ssss s sssss  s ssss         hhhhhh  
SEQALI    21EXT             sssss          ssss s sssss  s ssss         hhhhh   
SEQALI    21NCF             s ssss          sss ss sssss   sssss                
SEQALI    21TNR             ss              sss          s ssss sssss   sssss   
SEQALI    
SEQALI    
SEQALI    P25445    197   KTCRKHRKEN QGSHESPTLN PETVAINLSD VDLSKYITTI AGVMTLSQVK
SEQALI    11CDF           ---------- ---------- ---------- ---------- ----------
SEQALI    11EXT     158   IEN------- ---------- ---------- ---------- ----------
SEQALI    21EXT           ---------- ---------- ---------- ---------- ----------
SEQALI    21NCF           ---------- ---------- ---------- ---------- ----------
SEQALI    21TNR           ---------- ---------- ---------- ---------- ----------
SEQALI                                                                          
SEQALI    P25445                                                                
SEQALI    11CDF                                                                 
SEQALI    11EXT                                                                 
SEQALI    21EXT                                                                 
SEQALI    21NCF                                                                 
SEQALI    21TNR                                                                 
SEQALI    
SEQALI    
SEQALI    P25445    247   GFVRKNGVNE AKIDEIKNDN VQDTAEQKVQ LLRNWHQLHG KKEAYDTLIK
SEQALI    11CDF           ---------- ---------- ---------- ---------- ----------
SEQALI    11EXT           ---------- ---------- ---------- ---------- ----------
SEQALI    21EXT           ---------- ---------- ---------- ---------- ----------
SEQALI    21NCF           ---------- ---------- ---------- ---------- ----------
SEQALI    21TNR           ---------- ---------- ---------- ---------- ----------
SEQALI                                                                          
SEQALI    P25445                                                                
SEQALI    11CDF                                                                 
SEQALI    11EXT                                                                 
SEQALI    21EXT                                                                 
SEQALI    21NCF                                                                 
SEQALI    21TNR                                                                 
SEQALI    
SEQALI    
SEQALI    P25445    297   DLKKANLCTL AEKIQTIILK DITSDSENSN FRNEIQSLV            
SEQALI    11CDF           ---------- ---------- ---------- ---------            
SEQALI    11EXT           ---------- ---------- ---------- ---------            
SEQALI    21EXT           ---------- ---------- ---------- ---------            
SEQALI    21NCF           ---------- ---------- ---------- ---------            
SEQALI    21TNR           ---------- ---------- ---------- ---------            
SEQALI                                                                          
SEQALI    P25445                                                                
SEQALI    11CDF                                                                 
SEQALI    11EXT                                                                 
SEQALI    21EXT                                                                 
SEQALI    21NCF                                                                 
SEQALI    21TNR                                                                 
SEQALI    
SEQALI    
SEQRES   1    161  THR VAL THR THR VAL GLU THR GLN ASN LEU GLU GLY LEU 
SEQRES   2    161  HIS HIS ASP GLY GLN PHE CYS HIS LYS PRO CYS PRO PRO 
SEQRES   3    161  GLY GLU ARG LYS ALA ARG ASP CYS THR VAL ASN GLY ASP 
SEQRES   4    161  GLU PRO ASP CYS VAL PRO CYS GLN GLU GLY LYS GLU TYR 
SEQRES   5    161  THR ASP LYS ALA HIS PHE SER SER LYS CYS ARG ARG CYS 
SEQRES   6    161  ARG LEU CYS ASP GLU GLY HIS GLY LEU GLU VAL GLU ILE 
SEQRES   7    161  ASN CYS THR ARG THR GLN ASN THR LYS CYS ARG CYS LYS 
SEQRES   8    161  PRO ASN PHE PHE CYS ASN SER THR VAL CYS GLU HIS CYS 
SEQRES   9    161  ASP PRO CYS THR LYS CYS GLU HIS GLY ILE ILE LYS GLU 
SEQRES  10    161  CYS THR LEU THR SER ASN THR LYS CYS LYS GLU GLU GLY 
SEQRES  11    161  SER ARG SER ASN LEU GLY TRP LEU CYS LEU LEU LEU LEU 
SEQRES  12    161  PRO ILE PRO LEU ILE VAL TRP VAL LYS ARG LYS GLU VAL 
SEQRES  13    161  GLN LYS THR CYS          
CRYST1    1.000    1.000    1.000  90.00  90.00  90.00 P 1           1
ORIGX1      1.000000  0.000000  0.000000        0.00000
ORIGX2      0.000000  1.000000  0.000000        0.00000
ORIGX3      0.000000  0.000000  1.000000        0.00000
SCALE1      1.000000  0.000000  0.000000        0.00000
SCALE2      0.000000  1.000000  0.000000        0.00000
SCALE3      0.000000  0.000000  1.000000        0.00000
ATOM      1  H1  LYS     1      20.330  -2.680 -25.883  1.00 99.00
etc ...


Torsten Schwede , Manuel C. Peitsch & Nicolas Guex.