Dictionary » H » Helical

Helical

Helical

1. Relating to a helix.

Synonym: helicine.

Synonym: helicoid.

Origin: g. Helix, a coil in the shape of a coil.Pertaining to the appearance of a helix structure.


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how predict which aminoacid form secondary structure

... biopolymers such as proteins and nucleic acids. Secondary structure was predicted by using the programs PSIPRED and ALB. The residues predicted as helical are marked by H by PSIPRED and by H and & by ALB, and those predicted as -structural are marked by E by PSIPRED and by S and B by ALB.

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by Fred111
Wed Dec 26, 2012 12:10 pm
 
Forum: General Discussion
Topic: how predict which aminoacid form secondary structure
Replies: 2
Views: 681

coat structure in white bean seeds

Hi, while observing detached white bean testa in optical microscopy, I saw some long helical structures - seemingly included in thiny walled pipes (not sure of this) and roughly 20 µ large - laying onto the coat plane and assembled in branched bundles (jpeg attached). ...

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by leosilv
Tue Sep 04, 2012 4:38 pm
 
Forum: Botany Discussion
Topic: coat structure in white bean seeds
Replies: 2
Views: 1894

Re: Cell membrane targeting signals.

... embedded in the membrane by hydrophobic regions that span the phospholipid bilayer. The membrane-spanning portions of these proteins are usually α-helical regions consisting of 20 to 25 hydrophobic amino acids. The formation of an α helix maximizes hydrogen bonding between the peptide bonds, and ...

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by Fransis
Tue Sep 06, 2011 9:39 am
 
Forum: Cell Biology
Topic: Cell membrane targeting signals.
Replies: 3
Views: 5212

DNA isolation after digestion with micrococcal nuclease

... are small or weigh very little? d) if the two proteins have a molar ratio of 1:1 then they are very similar? nucleosome structures are alpha helical, and so are the majority of proteins, so does that have anything do do with this question?

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by havery01
Wed Dec 01, 2010 12:31 am
 
Forum: Cell Biology
Topic: DNA isolation after digestion with micrococcal nuclease
Replies: 6
Views: 3660

Re: Gluten-free and Vaccines

... the 33-mer gliadin peptide and its homologs from pertactin and the tyrosine phosphatase reveal that these peptides have strong type II polyproline helical character (fig. S2). In addition to reinforcing the proteolytic resistance of these peptides, the type II polyproline helical conformation is ...

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by tmerezko
Tue Jun 22, 2010 6:08 pm
 
Forum: General Discussion
Topic: Gluten-free and Vaccines
Replies: 7
Views: 13029
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