There are two models of protein folding that are currently being confirmed: 1  The diffusion collision model, in which a nucleus is formed, then the secondary structure is formed, and finally these secondary structures are collided together and pack tightly together.
ATT Validity Dates. 1  Each ATT is valid for a period of time specified by the BON/RB (the average length of an ATT is 90 days). 2  Once the BON/RB has declared you eligible to test and you receive your ATT, you must test within the validity dates on the ATT.
Like the state I'm in, finger printing results is only good for 6 months for NCLEX applicants. This is what the state BON looks at in order to issue an approval letter for the licensure application before you can even register with pearson, as pearson requests eligibility status from the BON.