▁t issue ▁and ▁F RT L - 5 ▁thy roid ▁cells , ▁and ▁is ▁reported ▁to ▁have ▁micro t ub ule - associ ated ▁protein - like ▁activity ▁( MAP ; ▁see ▁M AP 2 ), ▁being ▁able ▁to ▁catal y ze ▁micro t ub ule ▁formation ▁at ▁low ▁mol ar ▁r ati os . ▁De let ion ▁of ▁the ▁C - ter minus ▁of ▁C NP ase ▁or ▁ph osph ory lation ▁abol ish ▁the ▁catal yt ic ▁activity ▁of ▁micro t ub ule ▁formation . ▁C NP ase ▁can ▁link ▁tub ul in ▁to ▁cell ular ▁memb ran es , ▁and ▁might ▁be ▁involved ▁in ▁the ▁reg ulation ▁cy top las mic ▁micro t ub ule ▁distribution . ▁ ▁CNN P ase ▁has ▁also ▁been ▁demonstrated ▁to ▁in hib it ▁the ▁rep lication ▁of ▁H IV - 1 ▁and ▁other ▁prim ate ▁l ent iv ir uses ▁by ▁binding ▁the ▁retro vir al ▁G ag ▁protein ▁and ▁in hib iting ▁the ▁gen esis ▁of ▁nas cent ▁vir al ▁particles . ▁ ▁Whether ▁this ▁is ▁a ▁bi ological ▁function ▁of ▁C NP ase ▁or ▁a ▁coinc ident al ▁activity ▁remains ▁unclear . ▁ ▁References ▁ ▁External ▁links ▁ ▁Further ▁reading ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ ▁Category : H uman ▁prote ins <0x0A> </s> ▁Rudolf ▁von ▁L aban , ▁also ▁known ▁as ▁Rudolf ▁L aban ▁( ; ▁ 1 5 ▁December ▁ 1 8 7 9 ▁– ▁ 1 ▁July ▁ 1 9 5 8 ), ▁was ▁an ▁Aust ro - H ung arian ▁dance