The module also implements several input / output interfaces, notably with NetCDF files, Protein Data Bank files, Fortran-style formatting and Message Passing Interface for parallel computing.

Protein A, protein G, and protein L are examples of proteins that strongly bind to various antibody isotypes.

Low carbohydrate diets such as Atkins and Protein Power are relatively high in protein and fats.

In the description of protein structure, in particular in the Protein Data Bank file format, a heteroatom record ( HETATM ) describes an atom as belonging to a small molecule cofactor rather than to be part of a biopolymer chain.

Protein purification involves the isolation of a specific protein of interest from a complex mixture of proteins, often obtained from homogenized cells or tissues.

While the infectious agent was named a prion, the specific protein that the prion was composed of is also known as the Prion Protein ( PrP ), though this protein may occur both in infectious and non-infectious forms.

Solved structures are usually deposited in the Protein Data Bank ( PDB ), a freely available resource from which structural data about thousands of proteins can be obtained in the form of Cartesian coordinates for each atom in the protein.

Protein binding can be extraordinarily tight and specific ; for example, the ribonuclease inhibitor protein binds to human angiogenin with a sub-femtomolar dissociation constant (< 10 < sup >− 15 </ sup > M ) but does not bind at all to its amphibian homolog onconase (> 1 M ).

Protein – protein interactions also regulate enzymatic activity, control progression through the cell cycle, and allow the assembly of large protein complexes that carry out many closely related reactions with a common biological function.

* Protein tag, describing addition of peptide sequences to enable protein isolation

* Protein Synthesis Animation Wesleyan University Learning Objects animation of protein synthesis.

Protein targeting or protein sorting is the mechanism by which a cell transports proteins to the appropriate positions in the cell or outside of it.

* Protein sequencer, a machine used to automatically produce a sequence readout from a biological protein sample

Once the model of a molecule's structure has been finalized, it is often deposited in a crystallographic database such as the Cambridge Structural Database ( for small molecules ), the Inorganic Crystal Structure Database ( ICSD ) ( for inorganic compounds ) or the Protein Data Bank ( for protein structures ).

Three-dimensional protein structures of the peroxidated catalase intermediates are available at the Protein Data Bank.

* Protein domain, a part of a protein that can exist independently of the rest of the protein chain

Protein kinases are a group of enzymes that possess a catalytic subunit that transfers the gamma ( terminal ) phosphate from nucleotide triphosphates ( often ATP ) to one or more amino acid residues in a protein substrate side chain, resulting in a conformational change affecting protein function.

Protein folding is the process by which a protein structure assumes its functional shape or conformation.

An example of a Green Fluorescent Protein | GFP fusion protein.

Protein methylation typically takes place on arginine or lysine amino acid residues in the protein sequence.

* Nash Lab Protein Interaction Domains in Signal Transduction-The SH3 domain

A domain that covers an entire sequence is called the homeomorphic domain by PIR ( Protein Information Resource ).

# Redirect Protein domain

# REDIRECT Protein domain

# Protein domain: The domains in families are grouped into protein domains, which are essentially the same protein.

*" Fine tuning function: Correlation of hinge domain interactions with functional dis-tinctions between LacI and PurR " Protein Science 11 778-794 ( 2002 ); Liskin Swint-Kruse, C. Larson, B. M. Pettitt and K. S.

Protein S can bind to negatively charged phospholipids via the carboxylated GLA domain.

* BCCP ( Biotin Carboxyl Carrier Protein ), a protein domain recognized by streptavidin

Protein kinase A inactivates the PFK-2 domain of the bifunctional enzyme via phosphorylation.

The sequential unfolding of modules is observed as a very characteristic sawtooth pattern of the force vs elongation graph ; every tooth corresponds to the unfolding of a single protein module ( apart from the last that is generally the detachment of the protein molecule from the tip ) A lot of information about protein elasticity and protein unfolding can be obtained by this technique.

Many transcription factors contain a structure known as a zinc finger, this is a structural module where a region of protein folds around a zinc ion.

Natural inhibitors include potato carboxypeptidase inhibitor ( PCI ), which contains a small cysteine-rich module, called a T-knot scaffold, that is shared by several different protein families, including the EGF family.

In the construction and maintenance of the system there are two other roles: the problem domain expert who builds the system and supplies the knowledge base, and a knowledge engineer who assists the experts in determining the representation of their knowledge, enters this knowledge into an explanation module and who defines the inference technique required to solve the problem.

If M is a free module over a principal ideal domain R, then every submodule of M is again free.

This is similar ( but more categorical ) to concepts in group theory or module theory, where a given decomposition of an object into a direct sum is " not natural ", or rather " not unique ", as automorphisms exist that do not preserve the direct sum decomposition – see Structure theorem for finitely generated modules over a principal ideal domain # Uniqueness for example.

A Dedekind domain can also be characterized in terms of homological algebra: an integral domain is a Dedekind domain if and only if it is a hereditary ring ; i. e., every submodule of a projective module over it is projective.

Similarly, an integral domain is a Dedekind domain if and only if every divisible module over it is injective.

Now let be a finitely generated module over an arbitrary Dedekind domain.

* Cellulose-binding domain, former name for carbohydrate-binding module

* Over a Dedekind domain a non-principal ideal is always a projective module that is not a free module.

The Quillen – Suslin theorem, which solves Serre's problem is another deep result ; it states that if K is a field, or more generally a principal ideal domain, and R = K is a polynomial ring over K, then every projective module over R is free.

Since every projective module over a principal ideal domain is free, one might conjecture that following is true: if R is a commutative ring such that every ( finitely generated ) projective R-module is free then every ( finitely generated ) projective R-module is free.

* The agonist-binding module links to a membrane domain, which consists of three trans-membrane segments and a re-entrant loop reminiscent of the selectivity filter of potassium channels.

This was originally determined from the structure of the proximal leg domain that identified and is composed of a smaller structural module referred to as clathrin heavy chain repeat motifs.

* Increased difficulty in maintaining a system, because logical changes in the domain affect multiple modules, and because changes in one module require changes in related modules.

In particular, for an integral domain, the injective hull of the ring ( considered as a module over itself ) is the field of fractions.

Most AAA + proteins have a second domain that comprises the AAA + module: an all alpha-helical domain, often called the lid domain, that is C-terminal of the alpha / beta domain.

He identified the phosphotyrosine-binding Src homology 2 ( SH2 domain ) as the prototypic non-catalytic interaction module.

In commutative algebra and linear algebra, cyclic decomposition refers to writing a finitely generated module over a principal ideal domain as the direct sum of cyclic modules and one free module.