The folding of spectrin domains II: phi-value analysis of R16.


Abstract

Studies on the folding of helical proteins have shown a wide range of different mechanisms and highlighted the importance of helical propensity as a factor in determining folding mechanism. Here, we contribute to this interesting field with the protein engineering phi-value analysis of the 16th domain of chicken brain alpha-spectrin, R16. The fortuitous curvature seen in the unfolding arm of the chevron plot allows us to investigate both early and late events in folding. R16 is the first two-state helical protein for which this has been possible. Study holds ProTherm entries: 18107, 18108, 18109, 18110, 18111, 18112, 18113, 18114, 18115, 18116, 18117, 18118, 18119, 18120, 18121, 18122, 18123, 18124, 18125, 18126, 18127, 18128, 18129, 18130, 18131, 18132, 18133, 18134, 18135, 18136, 18137, 18138, 18139, 18140, 18141, 18142, 18143, 18144, 18145, 18146, 18147, 18148, 18149, 18150, 18151, 18152, 18153, 18154, 18155, 18156, 18157, 18158, 18159, 18160, 18161, 18162, 18163, 18164, 18165, 18166, 18167, 18168, 18169, 18170, 18171, 18172, 18173, 18174, 18175 Extra Details: 16th domain. dGH2O is calculated using a mean value of m = 1.9 kcal/mol/M. protein folding; chevron plot; curvature; phi-value; spectrin

Submission Details

ID: PycmqvSn

Submitter: Connie Wang

Submission Date: April 24, 2018, 8:50 p.m.

Version: 1

Publication Details
Scott KA;Randles LG;Clarke J,J. Mol. Biol. (2004) The folding of spectrin domains II: phi-value analysis of R16. PMID:15504412
Additional Information

Structure view and single mutant data analysis

Study data

No weblogo for data of varying length.
Colors: D E R H K S T N Q A V I L M F Y W C G P
 

Data Distribution

Studies with similar sequences (approximate matches)

Correlation with other assays (exact sequence matches)


Relevant PDB Entries

Structure ID Release Date Resolution Structure Title
3THK 2011-08-19T00:00:00+0000 1.7 Structure of SH3 chimera with a type II ligand linked to the chain C-terminal
2FOT 2006-01-13T00:00:00+0000 2.45 Crystal structure of the complex between calmodulin and alphaII-spectrin
3F31 2008-10-30T00:00:00+0000 2.3 Crystal Structure of the N-terminal region of AlphaII-spectrin Tetramerization Domain
3FB2 2008-11-18T00:00:00+0000 2.3 Crystal structure of the human brain alpha spectrin repeats 15 and 16. Northeast Structural Genomics Consortium target HR5563a.
5FW9 2016-02-12T00:00:00+0000 1.55 Human Spectrin SH3 domain D48G, E7Y, K60Y
5FWB 2016-02-12T00:00:00+0000 1.5 Human Spectrin SH3 domain D48G, E7F, K60F
5FWC 2016-02-12T00:00:00+0000 1.4 Human Spectrin SH3 domain D48G, E7A, K60A
6ZEH 2020-06-16T00:00:00+0000 1.3 Structure of PP1-spectrin alpha II chimera [PP1(7-304) + linker (G/S)x9 + spectrin alpha II (1025-1039)] bound to Phactr1 (516-580)
1AEY 1997-03-02T00:00:00+0000 0 ALPHA-SPECTRIN SRC HOMOLOGY 3 DOMAIN, SOLUTION NMR, 15 STRUCTURES
1AJ3 1997-05-14T00:00:00+0000 0 SOLUTION STRUCTURE OF THE SPECTRIN REPEAT, NMR, 20 STRUCTURES

Relevant UniProtKB Entries

Percent Identity Matching Chains Protein Accession Entry Name
97.3 Spectrin alpha chain, non-erythrocytic 1 P16086 SPTN1_RAT
97.3 Spectrin alpha chain, non-erythrocytic 1 P16546 SPTN1_MOUSE
98.2 Spectrin alpha chain, non-erythrocytic 1 Q13813 SPTN1_HUMAN
100.0 Spectrin alpha chain, non-erythrocytic 1 P07751 SPTN1_CHICK