The name of this superfamily has been modified since the most recent official CATH+ release (v4_4_0). At the point of the last release, this superfamily was named:

"
Globins
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 2: Hemoglobin subunit alpha

Please note: GO annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

There are 10 GO terms relating to "molecular function"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Protein binding GO:0005515
Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
19 P01946 (/IPI) P01946 (/IPI) P01948 (/IPI) P01948 (/IPI) P01965 (/IPI) P01966 (/IPI) P01966 (/IPI) P02008 (/IPI) P09105 (/IPI) P09105 (/IPI)
(9 more)
Oxygen carrier activity GO:0005344
Enables the directed movement of oxygen into, out of or within a cell, or between cells.
4 P80043 (/ISS) P83271 (/ISS) P84653 (/ISS) P86882 (/ISS)
Heme binding GO:0020037
Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
4 P01942 (/ISO) P01942 (/ISO) P01942 (/ISO) Q91VB8 (/ISO)
Organic acid binding GO:0043177
Interacting selectively and non-covalently with an organic acid, any acidic compound containing carbon in covalent linkage.
4 P01942 (/ISO) P01942 (/ISO) P01942 (/ISO) Q91VB8 (/ISO)
Oxygen binding GO:0019825
Interacting selectively and non-covalently with oxygen (O2).
3 B3EWR7 (/IDA) P84790 (/IDA) P84791 (/IDA)
Amyloid-beta binding GO:0001540
Interacting selectively and non-covalently with amyloid-beta peptide/protein and/or its precursor.
2 P01946 (/IDA) P01946 (/IDA)
Oxygen carrier activity GO:0005344
Enables the directed movement of oxygen into, out of or within a cell, or between cells.
1 P83623 (/IDA)
Oxygen carrier activity GO:0005344
Enables the directed movement of oxygen into, out of or within a cell, or between cells.
1 P02008 (/TAS)
Heme binding GO:0020037
Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
1 Q63910 (/IDA)
Organic acid binding GO:0043177
Interacting selectively and non-covalently with an organic acid, any acidic compound containing carbon in covalent linkage.
1 Q63910 (/IPI)

There are 21 GO terms relating to "biological process"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Oxygen transport GO:0015671
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.
11 P09105 (/TAS) P09105 (/TAS) P09105 (/TAS) P09105 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS)
(1 more)
Protein heterooligomerization GO:0051291
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.
8 P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) Q63910 (/IDA)
Receptor-mediated endocytosis GO:0006898
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.
7 P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS)
Positive regulation of cell death GO:0010942
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.
7 P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA)
Bicarbonate transport GO:0015701
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.
7 P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS)
Response to hydrogen peroxide GO:0042542
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.
7 P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA)
Hydrogen peroxide catabolic process GO:0042744
The chemical reactions and pathways resulting in the breakdown of hydrogen peroxide (H2O2).
7 P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA)
In utero embryonic development GO:0001701
The process whose specific outcome is the progression of the embryo in the uterus over time, from formation of the zygote in the oviduct, to birth. An example of this process is found in Mus musculus.
4 P01942 (/IGI) P01942 (/IGI) P01942 (/IGI) Q91VB8 (/IGI)
Response to bacterium GO:0009617
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 stimulus from a bacterium.
4 P01942 (/IEP) P01942 (/IEP) P01942 (/IEP) Q91VB8 (/IEP)
Oxygen transport GO:0015671
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.
4 P80043 (/ISS) P83271 (/ISS) P84653 (/ISS) P86882 (/ISS)
Erythrocyte development GO:0048821
The process whose specific outcome is the progression of an erythrocyte over time, from its formation to the mature structure.
4 P01942 (/IGI) P01942 (/IGI) P01942 (/IGI) Q91VB8 (/IGI)
Oxygen transport GO:0015671
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.
3 P83623 (/IDA) P84790 (/IDA) P84791 (/IDA)
Response to stilbenoid GO:0035634
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 exposure to a stilbenoid. Stilbenoids are secondary products of heartwood formation in trees that can act as phytoalexins. Stilbenoids are hydroxylated derivatives of stilbene. They belong to the family of phenylpropanoids and share most of their biosynthesis pathway with chalcones.
3 P01942 (/IEP) P01942 (/IEP) P01942 (/IEP)
Negative regulation of transcription by RNA polymerase II GO:0000122
Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.
2 P06467 (/IMP) P06467 (/IMP)
Response to hypoxia GO:0001666
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 stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
2 Q90487 (/IDA) Q90487 (/IDA)
Regulation of translation GO:0006417
Any process that modulates the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of proteins by the translation of mRNA or circRNA.
2 P01948 (/IDA) P01948 (/IDA)
Hemopoiesis GO:0030097
The process whose specific outcome is the progression of the myeloid and lymphoid derived organ/tissue systems of the blood and other parts of the body over time, from formation to the mature structure. The site of hemopoiesis is variable during development, but occurs primarily in bone marrow or kidney in many adult vertebrates.
2 Q90487 (/NAS) Q90487 (/NAS)
Erythrocyte maturation GO:0043249
A developmental process, independent of morphogenetic (shape) change, that is required for an erythrocyte to attain its fully functional state.
2 P06467 (/IMP) P06467 (/IMP)
Negative regulation of blood pressure GO:0045776
Any process in which the force of blood traveling through the circulatory system is decreased.
2 P01946 (/IDA) P01946 (/IDA)
Regulation of sensory perception of pain GO:0051930
Any process that modulates the frequency, rate or extent of the sensory perception of pain, the series of events required for an organism to receive a painful stimulus, convert it to a molecular signal, and recognize and characterize the signal.
2 P01946 (/IDA) P01946 (/IDA)
Response to estradiol GO:0032355
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 stimulus by estradiol, a C18 steroid hormone hydroxylated at C3 and C17 that acts as a potent estrogen.
1 A0A0G2JSV6 (/IEP)

There are 19 GO terms relating to "cellular component"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Hemoglobin complex GO:0005833
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.
12 B3EWR7 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P83623 (/IDA) P84790 (/IDA)
(2 more)
Hemoglobin complex GO:0005833
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.
12 P02008 (/TAS) P09105 (/TAS) P09105 (/TAS) P09105 (/TAS) P09105 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS)
(2 more)
Extracellular space GO:0005615
That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
8 P01994 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA)
Extracellular exosome GO:0070062
A 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.
8 P02008 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA)
Extracellular region GO:0005576
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.
7 P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
7 P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
7 P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA)
Cytosolic small ribosomal subunit GO:0022627
The small subunit of a ribosome located in the cytosol.
7 P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA)
Haptoglobin-hemoglobin complex GO:0031838
A protein complex formed by the stable binding of a haptoglobin to hemoglobin.
7 P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA) P69905 (/IDA)
Endocytic vesicle lumen GO:0071682
The volume enclosed by the membrane of an endocytic vesicle.
7 P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS) P69905 (/TAS)
Blood microparticle GO:0072562
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.
7 P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA) P69905 (/HDA)
Extracellular space GO:0005615
That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
4 P01942 (/ISO) P01942 (/ISO) P01942 (/ISO) Q91VB8 (/ISO)
Hemoglobin complex GO:0005833
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.
4 P01942 (/ISO) P01942 (/ISO) P01942 (/ISO) Q91VB8 (/ISO)
Hemoglobin complex GO:0005833
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.
4 P80043 (/ISS) P83271 (/ISS) P84653 (/ISS) P86882 (/ISS)
Cytosolic small ribosomal subunit GO:0022627
The small subunit of a ribosome located in the cytosol.
4 P01942 (/ISO) P01942 (/ISO) P01942 (/ISO) Q91VB8 (/ISO)
Haptoglobin-hemoglobin complex GO:0031838
A protein complex formed by the stable binding of a haptoglobin to hemoglobin.
4 P01942 (/ISO) P01942 (/ISO) P01942 (/ISO) Q91VB8 (/ISO)
Myelin sheath GO:0043209
An electrically insulating fatty layer that surrounds the axons of many neurons. It is an outgrowth of glial cells: Schwann cells supply the myelin for peripheral neurons while oligodendrocytes supply it to those of the central nervous system.
3 P01942 (/HDA) P01942 (/HDA) P01942 (/HDA)
Hemoglobin complex GO:0005833
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.
2 Q90487 (/NAS) Q90487 (/NAS)
Synapse GO:0045202
The junction between a nerve fiber of one neuron and another neuron, muscle fiber or glial cell. As the nerve fiber approaches the synapse it enlarges into a specialized structure, the presynaptic nerve ending, which contains mitochondria and synaptic vesicles. At the tip of the nerve ending is the presynaptic membrane; facing it, and separated from it by a minute cleft (the synaptic cleft) is a specialized area of membrane on the receiving cell, known as the postsynaptic membrane. In response to the arrival of nerve impulses, the presynaptic nerve ending secretes molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane.
2 P01946 (/IDA) P01946 (/IDA)
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