On Vicipeid, an chiclipeid shaor.
Moilin ocsaigine ag ceangal le haemghrupa proisteiteach.
Coimpleasc comhordanaidithe is ea
haem
d'ian iarainn comhordanaidithe le
porfairin
ag gniomhu mar liogann theitridheadach, agus le ceann amhain no dha cheann de lioganna aiseacha. Ta an sainmhiniu scaoilte, agus fagann go leor leirithe na lioganna aiseacha a fhagail ar lar.
[1]
Ta go leor meitileaproiteini a bhfuil porfairin iontu mar a ngrupai proisteiteacha ; tugtar haemaphroteini orthu seo. Is gnach go n-aithnitear haeim mar chomhphairteanna de
haemagloibin
, an
li
dearg san
fhuil
, ach ta siad le fail freisin i roinnt haemaproiteini eile
ata
tabhachtach
o
thaobh na
bitheolaiochta de
amhail
miogloibin
,
citeacroim
,
catalaisi
, heme sarocsaiodaise, agus siontais ocsaide nitri inteili.
[2]
[3]
Faightear an
focal
haem
on
nGreigis
α?μα
haima a
chiallaionn "fuil".
Munla lionta spais den fho-aonad Fe-protaphorfairin IX de heme B. lioganna aiseacha fagtha ar lar. Sceim dathanna: liath = iarann, gorm = nitrigin, dubh = carbon, ban = hidrigin, dearg = ocsaigin
An haemghrupa de sucsaineit dihidrigionaise ata ceangailte le histidin,
iomproir leictreon
sa slabhra iompar leictreon
mhiteacoindrigh
. Leirionn an sfear mor leath-tredhearcach suiomh an
ian
iarainn
.
