FullModelInfo is an object cached inside the pose, and is necessary to keep track of all information related to how a pose 'fits in' to global stepwise modeling problem.

Code for FullModelInfo is in src/core/pose/full_model_info/FullModelInfo.cc.

Several powerful functions for dealing with poses with full_model_info objects are available in stepwise/modeler/util.hh, including merge_two_poses_using_full_model_info, slice, split_pose, fix_up_residue_type_variants, and figure_out_moving_chain_breaks.

# How to use

FullModelInfo needs to be set up to do operations like adding & deleting. It contains info on everything in the full modeling problem. Example (sorry this hasn't been tested):


// imagine pose has four residues with PDBInfo numbering a22,a23,u27,u28
pose::full_model_info::make_sure_full_model_info_is_setup( pose );  // will infer as much as possible from PDBInfo

std::cout << const_full_model_info( pose ).full_sequence() << std::endl;  // aannnuu  (note fill-in with n's)
std::cout << const_full_model_info( pose ).res_list() << std::endl; // [1, 2, 5, 6]
std::cout << const_full_model_info( pose ).conventional_numbering() << std::endl; // [22, 23, 27, 28]
std::cout << const_full_model_info( pose ).other_pose_list() << std::endl; // [] (empty)


More detailed examples of how to set up full_model_info are available in src/protocols/stepwise/full_model_info/FullModelInfoSetupFromCommandLine.

# Note on numbering schemes

There are three kinds of numbering schemes that we need to keep track of in stepwise modeling:

• Rosetta's pose numbering. In the above four residue pose, this would be [1, 2, 3, 4]. This numbering is also called working numbering throughout the stepwise code.

• Full-model numbering. This is numbering like 1, 2, ... incrementing with each residue in the full model. In the above problem, these numbers could go from 1 through 6. For the pose of interest, its res_list stores numbers in this scheme, [1, 2, 5, 6].

• Conventional numbering (and chains). What you might see in PDB info -- [22, 23, 27, 28] in above case.

# What is in FullModelInfo

There are three things in FullModelInfo:

### res_list

This is a utility::vector1< Size > that holds the numbers of each residue in the current pose, in full-model numbering.

### full_model_parameters

This is a FullModelParameters object, and it stores all information related to the eventual full-length model. These include:

• full_sequence • 'conventional' numbering/chain scheme, • non_standard_residue_map (any non-standard names that elaborate on one-letter sequence codes, e.g., 'Z[Mg]') • cutpoint_open_in_full_model,
• fixed_domain (any residues that are part of input PDBs and should not move), etc.
• disulfide pairs

See FullModelParameterType for full list of variables, stored in parameter_as_res_list.

-Note that there are is no information here on what subset of residues a specific pose contains (thats in res_list).

-The variables in here really should be 'permanent' -- parameters that won't change during a run.

• Note that integer lists are stored in two ways, for convenience: parameter_values_at_res [ 0, 0, 1, 1, 0, 0, 2, 2 ] (has same size as full_sequence)

parameter_values_as_res_lists -- same info as above, different format. { 0:[1, 2, 5, 6], 1:[3, 4], 2:[7, 8] }

• Advanced The one exception to constant FullModelParameters might be if we design while allowing loop lengths to vary. The most concise coding solution here involves updating FullModelParameters during the run, based on slicing out different length loops from a 'parent' FullModelParameters. This mode remain experimental -- its why we now have parent_full_model_parameters and slice_res_list as (optional) variables.

### other_pose_list

This is a vector of PoseOPs.

Suppose you're building a big model, and you have one pose for residues 22-28 and another two poses for residues 90-100 and for residues 120-130 built. In the stepwise framework, you'd hold on to the first pose, and it would contain references to the other poses in its other_pose_list. In this example, the other poses would themselves have empty other_pose_lists.

There are useful helper functions in stepwise/modeler/util.hh to switch_focus_to_other_pose.

[Originally, there was a scheme in which having each pose held references to immediately neighboring poses to create a 'pose tree', which might have made some loop-closure energies easier to compute, but this was ditched.]

### submotif_info_list

A submotif is, e.g., a C-G base pair or a three-nucleotide U-turn, defined in the Rosetta database and addable to the pose during stepwise modeling if submotif_moves (move type ADD_SUBMOTIF) are enabled. Stepwise modeling requires that every move have a reverse; any move that splits a submotif is not reversible and must be avoided. To keep track of which parts of a pose have submotifs, we store the information here, in a vector1 of simple SubMotifInfo objects, each holding the name of the submotif and the residues (in full model numbering) where it was instantiated. [thanks, Caleb Geniesse.]

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