Tools

Crystallography:

Here is a list of over 250 crystallography related programs!

Anomalous Scattering Coefficients phasing plot theoretical values of f’ and f”

Electron Density Server quickly view electron density map of desired protein (post)

PDBalert notifies you when a protein of related homology is deposited into the PDB (post)

Pfam uses PDB ID to find annotated information about your protein (post)

HIC-Up information about small molecules/ligands

PRODRG2 a server for high throughput crystallography of protein-ligand complexes

IUPred prediction of intrinsically unstructured proteins

Biochemical:
ProtParam tool computes various physical and chemical parameters for a given protein/sequence (pI, aa #, MW)

GenBank an annotated collection of all publicly available DNA sequences

Transcription and Translation Tool convert DNA to Protein

Reverse Translate convert Amino Acids to Oligonucleotides

OligoCalc: absorbance, reverse compliment, BLAST

SIM-LALNVIEW simple for aligning only 2 DNA or protein sequences

ClustalW2: general purpose multiple sequence alignment program for DNA or proteins

DNAWorks automates the design of oligos for gene synthesis by PCR-based methods

Mentioned on P212121:
Homology Modeling Servers listed by popularity

Databases links to the many databases that have been discussed here on P212121

I-TASSER for structural prediction (post here and here)

Other:
Mascot for mass spect data analysis

NCBI provides tons of genomic and biomedical information