Difference between revisions of "Phosphatase Fold CC1"

From PhosphataseWiki
Jump to: navigation, search
(Structure)
(Structure)
 
(2 intermediate revisions by one user not shown)
Line 4: Line 4:
  
 
=== Structure ===
 
=== Structure ===
We carried out structural alignment analysis of the crystal structures of five phosphatases of different families (Paladin and OCA has no structure), including human DUSP3 (DSP), PTEN (PTEN), PTPN1 (PTP), MTMR2 (myotubularin) and yeast Sac1p (Sac) (family names in parentheses). We compared the secondary structures and identified the common and family-specific secondary structures (SSs).  
+
A structural alignment analysis of the crystal structures of five phosphatases of different families, including human DUSP3 (DSP), PTEN (PTEN), PTPN1 (PTP), MTMR2 (myotubularin) and yeast Sac1p (Sac) (family names in parentheses; Paladin and OCA have no structure). showed that all five phosphatases share the same secondary structure (SS) combination of E2, E3, H2, E4, E11, H3, E12, H4, H5, H6 (E denotes beta strand, H denotes helix, SS numbered by PTP <cite> Andersen01</cite>).
  
All the five phosphatases share the same SSs combination of BBHBBHBHHH (B - sheet, H - helix). The phosphatases have different N-terminal SSs. All phosphatases ends at the same SS, helix 5 (H5), except MTMR2, which has additional 4 helices at C terminus. The sheets and helices are inserted at:
+
=== References ===
* B2-H1: Sac1p
+
<biblio>
* H1-B3: MTMR2
+
#Andersen01 pmid=11585896
* B3-B4: PTPN1, MTMR2, Sac1p
+
</biblio>
* B4-H2: PTPN1, MTMR2
+
* H2-B5: Sac1p
+
* H3-H4: MTMR2
+
 
+
We are uncertain about whether Sac1p has helix 5, because the region is not included in the available crystal structures (3LWT and 4TU3). However, we know the region is necessary for its catalytic activity (see [[Phosphatase_Family_Sac|Sac]]).
+

Latest revision as of 13:03, 2 April 2024

Phosphatase Classification: Fold CC1

Fold CC1 has a single superfamily CC1.

Structure

A structural alignment analysis of the crystal structures of five phosphatases of different families, including human DUSP3 (DSP), PTEN (PTEN), PTPN1 (PTP), MTMR2 (myotubularin) and yeast Sac1p (Sac) (family names in parentheses; Paladin and OCA have no structure). showed that all five phosphatases share the same secondary structure (SS) combination of E2, E3, H2, E4, E11, H3, E12, H4, H5, H6 (E denotes beta strand, H denotes helix, SS numbered by PTP [1]).

References

  1. Andersen JN, Mortensen OH, Peters GH, Drake PG, Iversen LF, Olsen OH, Jansen PG, Andersen HS, Tonks NK, and Møller NP. Structural and evolutionary relationships among protein tyrosine phosphatase domains. Mol Cell Biol. 2001 Nov;21(21):7117-36. DOI:10.1128/MCB.21.21.7117-7136.2001 | PubMed ID:11585896 | HubMed [Andersen01]