Evidence map›Paper›PMID 15678099›Full record

ArticleThe EMBO journal2005

Origin of asymmetry in adenylyl cyclases: structures of Mycobacterium tuberculosis Rv1900c.

Sangita C Sinha, Martina Wetterer, Stephen R Sprang, Joachim E Schultz, Jürgen U Linder

Open access · bronzeAbstract read
In one paragraph

Article in The EMBO journal, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
4.1field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Role of the nucleotidyl cyclase helical domain in catalytically active dimer formation.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  6. Article
  7. Article
  8. Crystal structures of human soluble adenylyl cyclase reveal mechanisms of catalysis and of its activation through bicarbonate.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. CRISPR interference: a structural perspective.The Biochemical journal · 2013
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Sangita C SinhaHoward Hughes Medical Institute and Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, TX, USA.
Martina Wetterer
Stephen R Sprang
Joachim E Schultz
Jürgen U Linder
University of Tübingen · DEThe University of Texas Southwestern Medical Center · US

Funding

X RAY STRUCTURE DETERMINATION OF G PROTEIN A SUBUNITSR01DK046371 · NIDDK · UT SOUTHWESTERN MEDICAL CENTER · PI SPRANG, STEPHEN R. · 1994 to 2007
$2.1M
Structural Analysis of G Protein Regulatory MechanismsR56DK046371 · NIDDK · UNIVERSITY OF MONTANA · PI SPRANG, STEPHEN R · 2009 to 2009
$133k
NIDDK NIH HHS DK46371NIDDK NIH HHS R01 DK046371NIDDK NIH HHS R56 DK046371
6 · The paper itself

Abstract

Rv1900c, a Mycobacterium tuberculosis adenylyl cyclase, is composed of an N-terminal alpha/beta-hydrolase domain and a C-terminal cyclase homology domain. It has an unusual 7% guanylyl cyclase side-activity. A canonical substrate-defining lysine and a catalytic asparagine indispensable for mammalian adenylyl cyclase activity correspond to N342 and H402 in Rv1900c. Mutagenic analysis indicates that these residues are dispensable for activity of Rv1900c. Structures of the cyclase homology domain, solved to 2.4 A both with and without an ATP analog, form isologous, but asymmetric homodimers. The noncanonical N342 and H402 do not interact with the substrate. Subunits of the unliganded open dimer move substantially upon binding substrate, forming a closed dimer similar to the mammalian cyclase heterodimers, in which one interfacial active site is occupied and the quasi-dyad-related active site is occluded. This asymmetry indicates that both active sites cannot simultaneously be catalytically active. Such a mechanism of half-of-sites-reactivity suggests that mammalian heterodimeric adenylyl cyclases may have evolved from gene duplication of a primitive prokaryote-type cyclase, followed by loss of function in one active site.

Indexed as

Adenosine TriphosphateAdenylyl CyclasesAmino Acid SequenceBinding SitesCrystallography, X-RayDimerizationKineticsMetalsModels, MolecularMolecular Sequence DataMycobacterium tuberculosisPhosphatesProtein BindingProtein Structure, QuaternaryProtein Structure, TertiaryRiboseAdenosine TriphosphateAdenylyl CyclasesMetalsPhosphatesRibose

Identifiers

PMID15678099
PMCPMC549627
OpenAlexW2169008525

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.