Permanent tissue

they will undergo differentiation to perform specific function

they are mature cells

Large central vacuole occur in living permanent cells

nucleus of each cell of this tissue is less conspicuous

TLS Online TPP Program

#Id: 8623

#XL - R Botany

SCF and APC/C are multisubunit ubiquitin-protein ligases that belong to the RING finger family of ubiquitin-protein ligases.

TLS Online TPP Program

#Id: 8625

#XL - R Botany

Human SCF complexes contain: 

Three core components - Cul1 subunit, RBX1, Skp1 

and a substrate-targeting F-box protein

TLS Online TPP Program

#Id: 8626

#XL - R Botany

RBX1 is a RING finger–containing protein that binds the E2 ubiquitin-conjugating enzyme.

TLS Online TPP Program

#Id: 8627

#XL - R Botany

phosphoserine/threonine-binding F-box protein is Skp2, which uses a series of leucine-rich repeats to bind to target proteins only when they are phosphorylated.

TLS Online TPP Program

#Id: 8628

#XL - R Botany

APC/C consists of 14 core subunits in metazoans and 13 core subunits in yeast.

TLS Online TPP Program

#Id: 8629

#XL - R Botany

APC/C works with substrate-targeting factors called Cdc20 and Cdh1