/*
* BioJava development code
*
* This code may be freely distributed and modified under the
* terms of the GNU Lesser General Public Licence. This should
* be distributed with the code. If you do not have a copy,
* see:
*
* http://www.gnu.org/copyleft/lesser.html
*
* Copyright for this code is held jointly by the individual
* authors. These should be listed in @author doc comments.
*
* For more information on the BioJava project and its aims,
* or to join the biojava-l mailing list, visit the home page
* at:
*
* http://www.biojava.org/
*
* Created on 01-21-2010
*/
package org.biojava.nbio.aaproperties.xml;
import org.biojava.nbio.core.sequence.compound.AminoAcidCompound;
import org.biojava.nbio.core.sequence.template.CompoundSet;
import org.biojava.nbio.core.sequence.template.Sequence;
import java.util.*;
/**
* Set of proteinogenic amino acids. Molecular weights are recorded in daltons (Da) as residues of a chain; monomers
* outside of a chain would likely have an additional mass of 18.01524 Da contributed by an associated water molecule.
*
* Currently we have different symbols to handle inserts so not as clean as it should be
*
* @author Richard Holland
* @author Scooter Willis
* @author Mark Chapman
*/
public class CaseFreeAminoAcidCompoundSet implements CompoundSet<AminoAcidCompound> {
private final Map<String, AminoAcidCompound> aminoAcidCompoundCache = new HashMap<String, AminoAcidCompound>();
private final Map<AminoAcidCompound, Set<AminoAcidCompound>> equivalentsCache =
new HashMap<AminoAcidCompound, Set<AminoAcidCompound>>();
public CaseFreeAminoAcidCompoundSet() {
aminoAcidCompoundCache.put("A", new AminoAcidCompound(null, "A", "Ala", "Alanine", 71.0788f));
aminoAcidCompoundCache.put("R", new AminoAcidCompound(null, "R", "Arg", "Arginine", 156.1875f));
aminoAcidCompoundCache.put("N", new AminoAcidCompound(null, "N", "Asn", "Asparagine", 114.1039f));
aminoAcidCompoundCache.put("D", new AminoAcidCompound(null, "D", "Asp", "Aspartic acid", 115.0886f));
aminoAcidCompoundCache.put("C", new AminoAcidCompound(null, "C", "Cys", "Cysteine", 103.1388f));
aminoAcidCompoundCache.put("E", new AminoAcidCompound(null, "E", "Glu", "Glutamic acid", 129.1155f));
aminoAcidCompoundCache.put("Q", new AminoAcidCompound(null, "Q", "Gln", "Glutamine", 128.1307f));
aminoAcidCompoundCache.put("G", new AminoAcidCompound(null, "G", "Gly", "Glycine", 57.0519f));
aminoAcidCompoundCache.put("H", new AminoAcidCompound(null, "H", "His", "Histidine", 137.1411f));
aminoAcidCompoundCache.put("I", new AminoAcidCompound(null, "I", "Ile", "Isoleucine", 113.1594f));
aminoAcidCompoundCache.put("L", new AminoAcidCompound(null, "L", "Leu", "Leucine", 113.1594f));
aminoAcidCompoundCache.put("K", new AminoAcidCompound(null, "K", "Lys", "Lysine", 128.1741f));
aminoAcidCompoundCache.put("M", new AminoAcidCompound(null, "M", "Met", "Methionine", 131.1986f));
aminoAcidCompoundCache.put("F", new AminoAcidCompound(null, "F", "Phe", "Phenylalanine", 147.1766f));
aminoAcidCompoundCache.put("P", new AminoAcidCompound(null, "P", "Pro", "Proline", 97.1167f));
aminoAcidCompoundCache.put("S", new AminoAcidCompound(null, "S", "Ser", "Serine", 87.0782f));
aminoAcidCompoundCache.put("T", new AminoAcidCompound(null, "T", "Thr", "Threonine", 101.1051f));
aminoAcidCompoundCache.put("W", new AminoAcidCompound(null, "W", "Trp", "Tryptophan", 186.2132f));
aminoAcidCompoundCache.put("Y", new AminoAcidCompound(null, "Y", "Tyr", "Tyrosine", 163.1760f));
aminoAcidCompoundCache.put("V", new AminoAcidCompound(null, "V", "Val", "Valine", 99.1326f));
aminoAcidCompoundCache.put("B", new AminoAcidCompound(null, "B", "Asx", "Asparagine or Aspartic acid", null));
aminoAcidCompoundCache.put("Z", new AminoAcidCompound(null, "Z", "Glx", "Glutamine or Glutamic acid", null));
aminoAcidCompoundCache.put("J", new AminoAcidCompound(null, "J", "Xle", "Leucine or Isoleucine", null));
aminoAcidCompoundCache.put("X", new AminoAcidCompound(null, "X", "Xaa", "Unspecified", null));
aminoAcidCompoundCache.put("-", new AminoAcidCompound(null, "-", "---", "Unspecified", null));
aminoAcidCompoundCache.put(".", new AminoAcidCompound(null, ".", "...", "Unspecified", null));
aminoAcidCompoundCache.put("_", new AminoAcidCompound(null, "_", "___", "Unspecified", null));
aminoAcidCompoundCache.put("*", new AminoAcidCompound(null, "*", "***", "Stop", null));
//Selenocysteine - this is encoded by UGA with the presence
//of a SECIS element (SElenoCysteine Insertion Sequence) in the mRNA
//and is a post-translation modification
aminoAcidCompoundCache.put("U", new AminoAcidCompound(null, "U", "Sec", "Selenocysteine", 150.0388f));
//Pyrrolysine is encoded by UAG in mRNA (normally Amber stop codon) which is translated to
//this amino acid under the presence of pylT which creates an anti-codon CUA & pylS
//which then does the actual conversion to Pyl.
aminoAcidCompoundCache.put("O", new AminoAcidCompound(null, "O", "Pyl", "Pyrrolysine", 255.3172f));
Map<String, AminoAcidCompound> lowerCaseSet = new HashMap<String, AminoAcidCompound>();
for(String s:this.aminoAcidCompoundCache.keySet()){
lowerCaseSet.put(s.toLowerCase(), this.aminoAcidCompoundCache.get(s));
}
this.aminoAcidCompoundCache.putAll(lowerCaseSet);
}
@Override
public String getStringForCompound(AminoAcidCompound compound) {
return compound.toString();
}
@Override
public AminoAcidCompound getCompoundForString(String string) {
if (string.length() == 0) {
return null;
}
if (string.length() > this.getMaxSingleCompoundStringLength()) {
throw new IllegalArgumentException("String supplied ("+string+") is too long. Max is "+getMaxSingleCompoundStringLength());
}
return this.aminoAcidCompoundCache.get(string);
}
@Override
public int getMaxSingleCompoundStringLength() {
return 1;
}
@Override
public boolean isCompoundStringLengthEqual() {
return true;
}
private final static CaseFreeAminoAcidCompoundSet aminoAcidCompoundSet = new CaseFreeAminoAcidCompoundSet();
public static CaseFreeAminoAcidCompoundSet getAminoAcidCompoundSet() {
return aminoAcidCompoundSet;
}
@Override
public boolean compoundsEquivalent(AminoAcidCompound compoundOne, AminoAcidCompound compoundTwo) {
Set<AminoAcidCompound> equivalents = getEquivalentCompounds(compoundOne);
return (equivalents != null) && equivalents.contains(compoundTwo);
}
@Override
public Set<AminoAcidCompound> getEquivalentCompounds(AminoAcidCompound compound) {
if (equivalentsCache.isEmpty()) {
// most compounds are equivalent to themselves alone
for (AminoAcidCompound c : aminoAcidCompoundCache.values()) {
equivalentsCache.put(c, Collections.singleton(c));
}
// ambiguous Asparagine or Aspartic acid
addAmbiguousEquivalents("N", "D", "B");
// ambiguous Glutamine or Glutamic acid
addAmbiguousEquivalents("E", "Q", "Z");
// ambiguous Leucine or Isoleucine
addAmbiguousEquivalents("I", "L", "J");
// ambiguous gaps
AminoAcidCompound gap1, gap2, gap3;
Set<AminoAcidCompound> gaps = new HashSet<AminoAcidCompound>();
gaps.add(gap1 = aminoAcidCompoundCache.get("-"));
gaps.add(gap2 = aminoAcidCompoundCache.get("."));
gaps.add(gap3 = aminoAcidCompoundCache.get("_"));
equivalentsCache.put(gap1, gaps);
equivalentsCache.put(gap2, gaps);
equivalentsCache.put(gap3, gaps);
// X is never equivalent, even to itself
equivalentsCache.put(aminoAcidCompoundCache.get("X"), new HashSet<AminoAcidCompound>());
}
return equivalentsCache.get(compound);
}
// helper method to initialize the equivalent sets for 2 amino acid compounds and their ambiguity compound
private void addAmbiguousEquivalents(String one, String two, String either) {
Set<AminoAcidCompound> equivalents;
AminoAcidCompound cOne, cTwo, cEither;
equivalents = new HashSet<AminoAcidCompound>();
equivalents.add(cOne = aminoAcidCompoundCache.get(one));
equivalents.add(cTwo = aminoAcidCompoundCache.get(two));
equivalents.add(cEither = aminoAcidCompoundCache.get(either));
equivalentsCache.put(cEither, equivalents);
equivalents = new HashSet<AminoAcidCompound>();
equivalents.add(cOne);
equivalents.add(cEither);
equivalentsCache.put(cOne, equivalents);
equivalents = new HashSet<AminoAcidCompound>();
equivalents.add(cTwo);
equivalents.add(cEither);
equivalentsCache.put(cTwo, equivalents);
}
@Override
public boolean hasCompound(AminoAcidCompound compound) {
return aminoAcidCompoundCache.containsValue(compound);
}
@Override
public List<AminoAcidCompound> getAllCompounds() {
return new ArrayList<AminoAcidCompound>(aminoAcidCompoundCache.values());
}
@Override
public boolean isComplementable() {
return false;
}
@Override
public boolean isValidSequence(Sequence<AminoAcidCompound> sequence) {
for (AminoAcidCompound c: sequence) {
if (!hasCompound(c)) {
return false;
}
}
return true;
}
}