Hämoglobin = Hb
Red blood cells (erythrocytes) (in human blood) get their red color from hemoglobin. Other types of blood use different pigments and come in a variety of colors (green/blue).
Remarkable feature of blood is its high capacity for carrying O. This is possible by a metal-containing pigment, which is attached to the blood's protein. The pigment combines reversibly with
O, picking it up in lung/a gill and carrying it to the cells before letting it go. This process works because the pigment combines with O at high partial pressure in the organism's respiratory organ,
then releases it at the comparatively low pressure within cells (Ferr-met. works in 3 functional realms: 1. as healer and strengthener of nervous tissue, 2. relates to the biliary system, restraining
the overexuberance, 3. working in the rhythmic cycles/the to and fro of taking up and giving up O by the hemoglobin is an example of this rhythmic activity of iron).
The most widely-distributed is Hb, a molecule consisting of a porphyrin ring with a central iron atom hooked to a clump of protein called globin. Hemoglobin is found in all vertebrates (except a
few Antarctic fish)/in the circulatory fluids of many invertebrates (annelid worms/many arthropods/some echinoderms/molluscae/crustacea).
Other pigments as oxygen-transporters:
Chlorocruorin: in tubular annelids (Polychaeta)/Solutions of this iron-based pigment are green when dilute, but vivid red at higher concentrations.
The blood of one species, Serpula vermicularis (= Bunter Kalkröhrenwurm), is remarkable in that it uses a dual hemoglobin/chlorocruorin system.
Hemerythrin: in marine worms/some nematodes/annelids/brachiopods. Blood containing this pigment is bright pink or violet when oxygenated, but colorless by the time it reaches the veins.
Vanadium chromagen: sea squirts/ascidians/tunicates. Usually makes blood apple-green, though this may change to blue or orange in the presence of different vanadium oxides.
Pinnaglobin: brown manganese-based porphyrin, in Pinna squamosa
Vitamin B12: a cobalt-based porphyrin. Coboglobin blood would be colorless or slightly pink when oxygen-enriched, but dark yellow or deep amber in the veins. (Like hemocyanin, hemerythrin
and coboglobin are not destroyed by carbon monoxide as is hemoglobin)
Arenicola marina. dessen extracellular hemoglobin = a new promising blood substitute
Chlrpl. = Hämoglobin-ähnLICH/hat Mg statt Fe als Zentralatom
Helx-p. The blood system is open, with blood spaces and no veins. The pigment is colorless, and is called haemocyanin, which contains copper
Herod-c.The blood of the worm = simiLAR to human blood/has same function of carrying oxygen/has iron-rich hemoglobin as its base
Pinnaglobin (bindet O mit Mn. in Pinna squamosa) Mollusken.
Siehe: Blutgruppe + Ferrum metallicum + Geburtsgruppe
Vorwort/Suchen Zeichen/Abkürzungen Impressum