However, TRANSFAC and MatBase contain some unique TFBS matrices, such as the matrix for PLZF in MatBase.
For matrices such as soil, dust, or urine, the actual matrix can be readily obtained.
For matrices such as dermal wipes, there is a critical need to prepare a matrix that is as similar as possible to the field matrix.
The simulations suggested that dense matrix (such as basement membrane) forms an effective barrier to prevent invadopodia penetration and matrix degradation, whereas looser matrices (such as stroma) have gaps sufficient to allow invadopodia penetration and matrix degradation.
Compared with other biological matrices, such as urine and blood, EBC represents a "clean" matrix, consisting mostly of water.
The scores are predefined in scoring matrices, such as PAM (point accepted mutation) [ 4] and BLOSUM (blocks substitution matrix) [ 5].
I usually create a matrix such as a 'pie' shape, divided into sections.
PROCOV spends a lot of time doing matrix operations, such as matrix multiplication, matrix inversion and eigenvalue/eigenvector decomposition.
For example, raw mass spectra can be stored as either a R matrix or any matrix-like object, such as a sparse matrix.
In exceptional cases where an orphan metabolite had strong evidence that it was present within the mitochondrial matrix but used or produced outside it, such as pyruvate, or was required to fulfil an objective function, such as an amino acid, then a transport step was added to the model.
