protein questions

Discussion of all aspects of biological molecules, biochemical processes and laboratory procedures in the field.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
chenwithasterisk
Death Adder
Death Adder
Posts: 59
Joined: Sat Dec 30, 2006 10:14 am

protein questions

Post by chenwithasterisk » Fri Jan 05, 2007 5:57 am

DNA-RNA-mRNA-amino aicds-polypeptides-proteins.
is that the correct order.
also, the primary strcuture of protein depends on the sequence of amino aicds.however the secondar structure of protein come under tow groups, alpha helix and beta arrangement. in alpha helix,the chain of ONE polypeptide is twisted,so that the neigbouring hydrogens bonds interact.while in beta helix, two or more polypeptides run alongside,so that hydrogen bonds interact next to each other.the tertiary structure of a protein is the overal shape?

anyone can explain wat the difference is between tertiry structure and quantenary strcture?

by the way, is it really necessary to have so many structures?
[/code]

User avatar
sachin
King Cobra
King Cobra
Posts: 1517
Joined: Mon Jan 30, 2006 12:39 pm
Location: MUMBAI / INDIA
Contact:

Post by sachin » Fri Jan 05, 2007 2:08 pm

Its
DNA-mRNA-RIBOSOME-tRNA-AMINO ACID-PROTEINS.

You are right with your oncept.

Check google for quaternary and tirtiary structure.

yes, its necessary to have so many structures, enzyme binding and protein interaction needs specific structure of proteins so that they can work efficiently and separately, and can not jumble up.
Senior Education Officer, BNHS, India. www.bnhs.org

Bitter Truth!
Who says reason for world war III will be Petrol?
Reason lies in two words "Me and Mine".

User avatar
mith
Inland Taipan
Inland Taipan
Posts: 5345
Joined: Thu Jan 20, 2005 8:14 pm
Location: Nashville, TN
Contact:

Post by mith » Fri Jan 05, 2007 5:22 pm

I always learnt them as alpha helix and beta sheets...
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

User avatar
MrMistery
Inland Taipan
Inland Taipan
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)
Contact:

Post by MrMistery » Fri Jan 05, 2007 7:27 pm

yeah, it's beta sheet not beta helix, because of it's actual sheet shape, as oposed to a helical shape.
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

User avatar
sachin
King Cobra
King Cobra
Posts: 1517
Joined: Mon Jan 30, 2006 12:39 pm
Location: MUMBAI / INDIA
Contact:

Post by sachin » Sat Jan 06, 2007 6:11 am

I ve studied it as "Beta plate"............
Senior Education Officer, BNHS, India. www.bnhs.org

Bitter Truth!
Who says reason for world war III will be Petrol?
Reason lies in two words "Me and Mine".

User avatar
MrMistery
Inland Taipan
Inland Taipan
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)
Contact:

Post by MrMistery » Sat Jan 06, 2007 9:19 am

it's beta sheet or beta pleeted sheet. But beta plate is ok if you ask me. The name doesn't matter that much anyway...
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

User avatar
victor
King Cobra
King Cobra
Posts: 2668
Joined: Sat Apr 30, 2005 12:01 pm
Location: Yogyakarta, Indonesia..
Contact:

Post by victor » Sun Jan 07, 2007 4:19 am

Tell them to Dr.Stein and she'll say, They do matter :lol:
Q: Why are chemists great for solving problems?
A: They have all the solutions.

Post Reply

Who is online

Users browsing this forum: No registered users and 5 guests