BP

GO:0006898

receptor-mediated endocytosis

An endocytosis process in which cell surface receptors ensure specificity of transport. A specific receptor on the cell surface binds tightly to the extracellular macromolecule (the ligand) that it recognizes; the plasma-membrane region containing the receptor-ligand complex then undergoes endocytosis, forming a transport vesicle containing the receptor-ligand complex and excluding most other plasma-membrane proteins. Receptor-mediated endocytosis generally occurs via clathrin-coated pits and vesicles.

TAS

BP

GO:0010942

positive regulation of cell death

Any process that increases the rate or frequency of cell death. Cell death is the specific activation or halting of processes within a cell so that its vital functions markedly cease, rather than simply deteriorating gradually over time, which culminates in cell death.

IDA

BP

GO:0015671

oxygen transport

The directed movement of oxygen (O2) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.

TAS

BP

GO:0015701

bicarbonate transport

The directed movement of bicarbonate into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.

TAS

BP

GO:0042542

response to hydrogen peroxide

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a hydrogen peroxide (H2O2) stimulus.

IDA

BP

GO:0042744

hydrogen peroxide catabolic process

The chemical reactions and pathways resulting in the breakdown of hydrogen peroxide (H2O2).

IDA

BP

GO:0051291

protein heterooligomerization

The process of creating protein oligomers, compounds composed of a small number, usually between three and ten, of component monomers that are not all identical. Oligomers may be formed by the polymerization of a number of monomers or the depolymerization of a large protein polymer.

IDA

BP

GO:0098869

cellular oxidant detoxification

Any process carried out at the cellular level that reduces or removes the toxicity superoxide radicals or hydrogen peroxide.

IEA

CC

GO:0005576

extracellular region

The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

TAS

CC

GO:0005829

cytosol

The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

TAS

CC

GO:0005833

hemoglobin complex

An iron-containing, oxygen carrying complex. In vertebrates it is made up of two pairs of associated globin polypeptide chains, each chain carrying a noncovalently bound heme prosthetic group.

IDA|TAS

CC

GO:0016020

membrane

A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

IDA

CC

GO:0022627

cytosolic small ribosomal subunit

The small subunit of a ribosome located in the cytosol.

IDA

CC

GO:0031838

haptoglobin-hemoglobin complex

A protein complex formed by the stable binding of a haptoglobin to hemoglobin.

IDA

CC

GO:0070062

extracellular exosome

A membrane-bounded vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.

IDA

CC

GO:0071682

endocytic vesicle lumen

The volume enclosed by the membrane of an endocytic vesicle.

TAS

CC

GO:0072562

blood microparticle

A phospholipid microvesicle that is derived from any of several cell types, such as platelets, blood cells, endothelial cells, or others, and contains membrane receptors as well as other proteins characteristic of the parental cell. Microparticles are heterogeneous in size, and are characterized as microvesicles free of nucleic acids.

IDA

MF

GO:0004601

peroxidase activity

Catalysis of the reaction: donor + hydrogen peroxide = oxidized donor + 2 H2O.

IDA

MF

GO:0005344

oxygen transporter activity

Enables the directed movement of oxygen into, out of or within a cell, or between cells.

IEA

MF

GO:0005506

iron ion binding

Interacting selectively and non-covalently with iron (Fe) ions.

IEA

MF

GO:0005515

protein binding

Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).

IPI

MF

GO:0019825

oxygen binding

Interacting selectively and non-covalently with oxygen (O2).

IEA

MF

GO:0020037

heme binding

Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.

IEA

MF

GO:0031720

haptoglobin binding

Interacting selectively and non-covalently with a haptoglobin, any alpha2 globulin of blood plasma that can combine with free oxyhemoglobin to form a stable complex.

IDA