P212121

Crystallography:
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