BP

GO:0001501

skeletal system development

The process whose specific outcome is the progression of the skeleton over time, from its formation to the mature structure. The skeleton is the bony framework of the body in vertebrates (endoskeleton) or the hard outer envelope of insects (exoskeleton or dermoskeleton).

NAS

BP

GO:0001502

cartilage condensation

The condensation of mesenchymal cells that have been committed to differentiate into chondrocytes.

TAS

BP

GO:0001503

ossification

The formation of bone or of a bony substance, or the conversion of fibrous tissue or of cartilage into bone or a bony substance.

IEA

BP

GO:0006508

proteolysis

The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.

IDA

BP

GO:0007275

multicellular organism development

The biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

TAS

BP

GO:0010862

positive regulation of pathway-restricted SMAD protein phosphorylation

Any process that increases the rate, frequency or extent of pathway-restricted SMAD protein phosphorylation. Pathway-restricted SMAD proteins and common-partner SMAD proteins are involved in the transforming growth factor beta receptor signaling pathways.

IBA

BP

GO:0022617

extracellular matrix disassembly

A process that results in the breakdown of the extracellular matrix.

TAS

BP

GO:0030509

BMP signaling pathway

A series of molecular signals initiated by the binding of a member of the BMP (bone morphogenetic protein) family to a receptor on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.

IBA

BP

GO:0042157

lipoprotein metabolic process

The chemical reactions and pathways involving any conjugated, water-soluble protein in which the nonprotein group consists of a lipid or lipids.

TAS

BP

GO:0042981

regulation of apoptotic process

Any process that modulates the occurrence or rate of cell death by apoptotic process.

IBA

BP

GO:0043408

regulation of MAPK cascade

Any process that modulates the frequency, rate or extent of signal transduction mediated by the MAP kinase (MAPK) cascade.

IBA

BP

GO:0048468

cell development

The process whose specific outcome is the progression of the cell over time, from its formation to the mature structure. Cell development does not include the steps involved in committing a cell to a specific fate.

IBA

BP

GO:0060395

SMAD protein signal transduction

The cascade of processes by which a signal interacts with a receptor, causing a change in the activity of a SMAD protein, and ultimately effecting a change in the functioning of the cell.

IBA

BP

GO:0061036

positive regulation of cartilage development

Any process that increases the rate, frequency, or extent of cartilage development, the process whose specific outcome is the progression of the cartilage over time, from its formation to the mature structure. Cartilage is a connective tissue dominated by extracellular matrix containing collagen type II and large amounts of proteoglycan, particularly chondroitin sulfate.

IDA

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:0005578

proteinaceous extracellular matrix

A layer consisting mainly of proteins (especially collagen) and glycosaminoglycans (mostly as proteoglycans) that forms a sheet underlying or overlying cells such as endothelial and epithelial cells. The proteins are secreted by cells in the vicinity. An example of this component is found in Mus musculus.

IEA

CC

GO:0005615

extracellular space

That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

IBA

CC

GO:0005794

Golgi apparatus

A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.

IEA

CC

GO:0031988

membrane-bounded vesicle

Any small, fluid-filled, spherical organelle enclosed by a lipid bilayer.

IEA

MF

GO:0004222

metalloendopeptidase activity

Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which water acts as a nucleophile, one or two metal ions hold the water molecule in place, and charged amino acid side chains are ligands for the metal ions.

TAS

MF

GO:0004252

serine-type endopeptidase activity

Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).

TAS

MF

GO:0005125

cytokine activity

Functions to control the survival, growth, differentiation and effector function of tissues and cells.

IBA

MF

GO:0005160

transforming growth factor beta receptor binding

Interacting selectively and non-covalently with the transforming growth factor beta receptor.

IBA

MF

GO:0005509

calcium ion binding

Interacting selectively and non-covalently with calcium ions (Ca2+).

IEA

MF

GO:0008083

growth factor activity

The function that stimulates a cell to grow or proliferate. Most growth factors have other actions besides the induction of cell growth or proliferation.

IEA

MF

GO:0008233

peptidase activity

Catalysis of the hydrolysis of a peptide bond. A peptide bond is a covalent bond formed when the carbon atom from the carboxyl group of one amino acid shares electrons with the nitrogen atom from the amino group of a second amino acid.

IDA

MF

GO:0008237

metallopeptidase activity

Catalysis of the hydrolysis of peptide bonds by a mechanism in which water acts as a nucleophile, one or two metal ions hold the water molecule in place, and charged amino acid side chains are ligands for the metal ions.

NAS

MF

GO:0008270

zinc ion binding

Interacting selectively and non-covalently with zinc (Zn) ions.

IEA