Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov. Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

NLM Logo

Protoporphyrins MeSH Descriptor Data 2026


MeSH Heading
Protoporphyrins
Tree Number(s)
D03.383.129.578.840.500.725
D03.633.400.909.500.725
D04.345.783.500.725
D23.767.727.725
Unique ID
D011524
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D011524
Annotation
porphyrins
Scope Note
Porphyrins with four methyl, two vinyl, and two propionic acid side chains attached to the pyrrole rings. Protoporphyrin IX occurs in hemoglobin, myoglobin, and most of the cytochromes.
Registry Numbers
0
Previous Indexing
Porphyrins (1968-1974)
Public MeSH Note
91; was see under PORPHYRINS 1975-90
History Note
91(75); was see under PORPHYRINS 1975-90
Date Introduced
1991/01/01
Last Updated
2016/05/31
Protoporphyrins Preferred
page delivered in 0.144s