Populations of some species are prone to extinction for two reasons

1. The landscapes they live in are patchy (making dispersal between populations difficult).

2. Environmental conditions often change in a rapid and unpredictable manner.

TLS Online TPP Program

#Id: 8147

#XL - Q Biochemistry

A clathrin molecule,

called a triskelion, is composed of : 

Three heavy chains

Three light chains

TLS Online TPP Program

#Id: 8146

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 8145

#XL - Q Biochemistry

Vesicle Type- Clathrin

Transport - trans-Golgi to endosome

Coat Proteins – Clathrin + AP1 complexes

                            Clathrin + GGA

Associated GTPase- ARF

TLS Online TPP Program

#Id: 8144

#XL - Q Biochemistry

Vesicle Type- COPI

Transport - cis-Golgi to ER

Coat Proteins – Coatomers

Associated GTPase- ARF

TLS Online TPP Program

#Id: 8143

#XL - Q Biochemistry

Vesicle Type- COPII

Transport - ER to cis-Golgi 

Coat Proteins - Sec23/Sec24 and Sec13/Sec31, Sec16

Associated GTPase- Sar1

TLS Online TPP Program

#Id: 8142

#XL - Q Biochemistry

Retrograde transport

COPI vesicles = cis-Golgi to ER