Navigation Links
Proteasome


A proteasome is a barrel-shaped multi-protein complex that can digest other proteins into short polypeptides and amino acids in an ATP-driven reaction. The proteasome is hollow, providing an enclosed space for protein digestion, and has openings at the two ends to allow entry of the targeted protein.

26S proteasome

The 26S proteasome is used for the digestion of ubiquitin-marked proteins. It is located on both sides of a cell's nuclear membrane and consists of a 20S core protease particle and two 19S regulatory particles. The 20S unit consists of 2 rings of α subunits and 2 rings of β subunits, stacked in the order αββα as a series of heptomeric rings. It is about 15 nm long and 11.5 nm wide. Each 19S unit consists of a lid and a base with a 19S regulatory particle is attached to each end of the 20S core particle via its base. Some of the subunits in the base are ATPases.

External links


'"/>


(Date:7/10/2014)... 27, 2014  The American Academy of Forensic ... Standards and Technology (NIST) and the Department of ... and forensic science expert members to the Forensic ... element of the NIST,s Organization of Scientific Area ... first appointments made to the new FSSB that ...
(Date:7/10/2014)... 2014  Aware, Inc. (NASDAQ: AWRE ), ... announced on June 26, 2014 that its Board of ... per share, or approximately $40 million in total.  The ... and a payment date of July 24, 2014.  The ... set an ex-dividend date for this special cash dividend. ...
(Date:7/10/2014)... , July 2, 2014  Unisys Corporation,s (NYSE: ... , Unisys Nederland N.V., today announced that it has been ... implement and manage a new Basic Provision Biometrics solution for ... Unisys won the contract with a solution based on ... software. The term of the contract is up to seven ...
Breaking Biology News(10 mins):Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 2Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 3NASDAQ Sets Ex-Dividend Date for Aware, Inc.'s Special Cash Dividend of $1.75 Per Share 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 3
... locals is a key ingredient in the success of marine ... largest-scale study to date of how coastal communities influence successful ... was a critical factor in whether or not a reserve ... local involvement in research and management. The team looked ...
... memory loss and cognitive decline among older people with diabetes, ... more than 900 men and women aged between 60 and ... the age of 40. They found that brain function ... cortisol. Dr Rebecca Reynolds, of the University of Edinburgh,s ...
... Anyone who grew up in a large family likely remembers hearing ... kids to keep it down, research shows that sleep also is ... world. Rebecca Gomez, Richard Bootzin and Lynn Nadel in the ... babies who are able to get in a little daytime nap ...
Cached Biology News:Participaton 'important for healthy marine parks' 2Babies and sleep: Another reason to love naps 2
Other biology definitionOther Tags