Evidence map›Paper›PMID 24515122›Full record

ArticleCellular and molecular life sciences : CMLS2014

Recent advances in the biosynthesis of modified tetrapyrroles: the discovery of an alternative pathway for the formation of heme and heme d 1.

Shilpa Bali, David J Palmer, Susanne Schroeder, Stuart J Ferguson, Martin J Warren

Open access · greenAbstract read
In one paragraph

Article in Cellular and molecular life sciences : CMLS, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

22 citing papers in PubMed, 54 citations in OpenAlex.

  1. Review
  2. BioIron: Origin, Chemical Properties, and Biological Functions.Advances in experimental medicine and biology · 2025
    Review
  3. Article
  4. Microbial Synthesis of HemeMolecules (Basel, Switzerland) · 2023
    Review
  5. Highlighting the Unique Roles of RadicalJournal of bacteriology · 2022
    Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. The Porphobilinogen Conundrum in Prebiotic Routes to Tetrapyrrole Macrocycles.Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life · 2017
    Article
  15. Article
  16. Heme Synthesis and Acquisition in Bacterial Pathogens.Journal of molecular biology · 2016
    Review
  17. Article
  18. Article
  19. Review
  20. Noncanonical coproporphyrin-dependent bacterial heme biosynthesis pathway that does not use protoporphyrin.Proceedings of the National Academy of Sciences of the United States of America · 2015
    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 1 country.

Shilpa BaliDepartment of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK.
David J Palmer
Susanne Schroeder
Stuart J Ferguson
Martin J Warren
University of Kent · GBUniversity of Oxford · GB

Funding

Biotechnology and Biological Sciences Research Council BB/E022944/1Biotechnology and Biological Sciences Research Council BBE0229441Biotechnology and Biological Sciences Research Council BB/E024203
6 · The paper itself

Abstract

Hemes (a, b, c, and o) and heme d 1 belong to the group of modified tetrapyrroles, which also includes chlorophylls, cobalamins, coenzyme F430, and siroheme. These compounds are found throughout all domains of life and are involved in a variety of essential biological processes ranging from photosynthesis to methanogenesis. The biosynthesis of heme b has been well studied in many organisms, but in sulfate-reducing bacteria and archaea, the pathway has remained a mystery, as many of the enzymes involved in these characterized steps are absent. The heme pathway in most organisms proceeds from the cyclic precursor of all modified tetrapyrroles uroporphyrinogen III, to coproporphyrinogen III, which is followed by oxidation of the ring and finally iron insertion. Sulfate-reducing bacteria and some archaea lack the genetic information necessary to convert uroporphyrinogen III to heme along the "classical" route and instead use an "alternative" pathway. Biosynthesis of the isobacteriochlorin heme d 1, a cofactor of the dissimilatory nitrite reductase cytochrome cd 1, has also been a subject of much research, although the biosynthetic pathway and its intermediates have evaded discovery for quite some time. This review focuses on the recent advances in the understanding of these two pathways and their surprisingly close relationship via the unlikely intermediate siroheme, which is also a cofactor of sulfite and nitrite reductases in many organisms. The evolutionary questions raised by this discovery will also be discussed along with the potential regulation required by organisms with overlapping tetrapyrrole biosynthesis pathways.

Indexed as

Biosynthetic PathwaysAnimalsHemeHumansModels, MolecularTetrapyrrolesUroporphyrinogensHemeheme dsirohemeTetrapyrrolesUroporphyrinogens

Identifiers

PMID24515122
PMCPMC11113276
OpenAlexW1991336709

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.