Contacts of the helix formed by residues 1658 - 1673 (chain I) in PDB entry 2BT4
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with HIS1658 (chain I).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1258G HIS* 5.0 0.4 - - + -
1260G GLY* 3.7 2.2 - - - -
1261G GLU* 3.4 30.7 - - + -
1264G ASP* 3.6 19.8 + - - -
1458H HIS* 5.0 1.6 - + + -
1656I SER* 2.9 14.4 + - - +
1657I ASN* 1.3 85.4 - - + +
1659I GLU* 1.3 66.7 + - - +
1661I GLU* 3.1 27.3 + - + +
1662I LEU* 3.2 14.8 + - - +
1683I TYR* 4.0 2.5 - - - -
2403I PO4 2.6 42.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU1659 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1259G GLU* 4.0 2.9 - - - +
1459H GLU* 4.0 4.2 - - - +
1483H TYR* 3.4 31.5 + - - +
2407H TRS 2.9 45.9 + - - -
1658I HIS* 1.3 70.9 - - - +
1660I GLY* 1.3 64.9 + - - +
1662I LEU* 3.1 7.8 + - - +
1663I VAL* 3.1 20.8 + - + +
1683I TYR* 3.5 29.5 + - + +
1687I SER* 2.7 31.2 + - - +
1689I ALA* 3.9 5.2 - - + +
1690I ILE* 4.2 8.7 - - + +
2403I PO4 4.1 4.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY1660 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1457H ASN* 3.3 26.2 + - - +
1458H HIS* 3.4 19.8 + - - +
1459H GLU 5.6 0.2 - - - +
1483H TYR* 4.4 1.0 + - - -
1658I HIS 3.2 0.8 - - - -
1659I GLU* 1.3 80.1 - - - +
1661I GLU* 1.3 56.7 + - - +
1663I VAL* 3.3 5.5 + - - +
1664I ASP* 3.0 32.4 + - - +
2403I PO4 3.4 6.8 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU1661 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1458H HIS* 3.4 13.6 - - + -
1655I GLN 5.0 0.2 - - - +
1656I SER* 2.7 25.9 + - - +
1658I HIS* 3.1 25.8 + - + +
1660I GLY* 1.3 74.6 - - - +
1662I LEU* 1.3 59.9 + - - +
1664I ASP* 3.2 9.5 + - + +
1665I TRP* 2.9 65.8 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU1662 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1612I LEU* 4.5 15.6 - - + +
1613I ASN 3.8 22.2 - - - +
1614I GLY* 4.1 14.1 - - - -
1656I SER* 4.1 11.7 - - - +
1658I HIS 3.2 12.2 + - - +
1659I GLU 3.1 5.7 + - - +
1661I GLU* 1.3 75.8 - - - +
1663I VAL* 1.3 62.7 + - - +
1665I TRP* 3.3 23.9 + - + +
1666I ILE* 2.9 32.5 + - + +
1678I ILE* 5.6 4.5 - - + -
1680I PRO* 5.3 2.7 - - + +
1683I TYR* 3.7 32.1 - - + -
1690I ILE* 3.9 17.0 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL1663 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1415H PRO* 4.7 1.3 - - + -
1416H ASN* 3.4 27.1 - - - +
1457H ASN* 3.6 29.4 - - + +
1659I GLU 3.1 18.0 + - - +
1660I GLY* 3.6 11.2 - - - +
1661I GLU 3.2 0.2 - - - -
1662I LEU* 1.3 75.0 - - - +
1664I ASP* 1.3 62.6 + - - +
1666I ILE* 3.1 10.7 + - - +
1667I HIS* 3.0 26.6 + - - +
1689I ALA* 3.9 30.3 - - + +
1690I ILE* 4.0 15.0 - - + -
1693I ALA* 4.0 2.2 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP1664 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1457H ASN* 2.7 35.0 + - - +
1458H HIS* 3.0 24.0 + - - -
1660I GLY 3.0 13.1 + - - +
1661I GLU* 3.3 12.2 - - + +
1663I VAL* 1.3 75.4 - - - +
1665I TRP* 1.3 68.9 + - + +
1667I HIS* 3.2 8.3 + - - +
1668I GLU* 3.0 20.6 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TRP1665 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1610I MET* 3.5 12.0 - - + +
1612I LEU* 4.1 21.1 - - + -
1654I ARG* 3.1 62.5 - - + +
1655I GLN 3.4 27.8 - - - -
1656I SER* 3.6 18.4 - - - -
1661I GLU* 2.9 45.9 + - + +
1662I LEU* 3.7 16.8 - - + +
1663I VAL 3.2 0.2 - - - -
1664I ASP* 1.3 79.9 - - + +
1666I ILE* 1.3 61.4 + - - +
1668I GLU* 3.3 8.5 + - - +
1669I ALA* 2.9 23.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE1666 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1612I LEU* 3.6 17.0 - - + -
1662I LEU* 2.9 23.1 + - + +
1663I VAL* 3.1 7.4 + - - +
1665I TRP* 1.3 74.7 - - - +
1667I HIS* 1.3 65.9 + - + +
1669I ALA* 3.2 6.9 + - - +
1670I ARG* 3.0 22.0 + - - +
1676I ILE* 4.4 3.4 - - + -
1678I ILE* 4.3 8.7 - - + -
1690I ILE* 4.0 24.9 - - + -
1693I ALA* 3.6 39.9 - - + +
1694I LEU* 4.0 24.0 - - + +
1697I CYS* 3.7 12.9 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with HIS1667 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1416H ASN* 2.7 32.5 + - - -
1418H ASN* 3.2 40.0 + - - +
1419H LEU* 3.7 25.4 - - + +
1457H ASN* 3.7 20.8 + - - -
1663I VAL* 3.0 18.1 + - + +
1664I ASP* 3.2 9.0 + - - +
1666I ILE* 1.3 78.6 - - - +
1668I GLU* 1.3 61.7 + - - +
1670I ARG* 3.3 20.6 + - - +
1671I LEU* 3.6 13.2 + - - +
1693I ALA* 4.4 4.5 - - + -
1696I THR* 4.1 9.4 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU1668 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1610I MET* 4.3 0.4 - - + -
1652I ASP* 4.5 0.2 - - - +
1654I ARG* 2.9 42.9 + - - -
1664I ASP 3.0 12.2 + - - +
1665I TRP* 3.5 12.7 - - - +
1666I ILE 3.2 0.2 - - - -
1667I HIS* 1.3 74.2 - - - +
1669I ALA* 1.4 65.0 + - - +
1671I LEU* 3.1 2.5 + - - -
1672I ASN* 2.9 42.8 + - - +
1673I HIS* 3.9 13.6 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA1669 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1610I MET* 3.9 19.9 - - + +
1665I TRP 2.9 14.0 + - - +
1666I ILE* 3.2 8.0 + - - +
1668I GLU* 1.4 76.4 - - - +
1670I ARG* 1.3 63.3 + - - +
1673I HIS* 3.0 41.2 + - + +
1676I ILE* 3.8 30.1 - - + -
1700I LEU* 4.5 4.6 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ARG1670 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1419H LEU* 3.9 24.4 - - - +
1422H GLN* 3.0 51.1 + - - +
1423H ARG* 5.3 3.2 - - - +
1666I ILE 3.0 12.8 + - - +
1667I HIS* 3.3 13.4 + - - +
1669I ALA* 1.3 77.6 - - - +
1671I LEU* 1.3 84.1 + - + +
1673I HIS 5.1 1.0 - - - +
1696I THR* 2.9 44.5 + - - +
1697I CYS* 3.9 20.4 - - - -
1698I ASP* 5.1 3.2 + - - +
1700I LEU* 4.6 10.6 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU1671 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1422H GLN* 5.6 1.1 - - - +
1602I ARG* 3.2 23.5 + - - -
1667I HIS 4.1 10.3 - - - +
1668I GLU 3.1 3.0 + - - +
1669I ALA 3.0 0.2 - - - -
1670I ARG* 1.3 113.4 - - + +
1672I ASN* 1.3 74.8 + - - +
1673I HIS 3.9 0.9 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ASN1672 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1602I ARG* 3.8 16.6 + - - +
1607I ALA* 3.5 16.3 - - - +
1608I PRO* 4.0 6.6 - - - +
1668I GLU* 2.9 36.0 + - + +
1671I LEU* 1.3 95.0 - - - +
1673I HIS* 1.3 81.2 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with HIS1673 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1602I ARG* 3.8 14.8 - - - +
1607I ALA* 4.2 0.9 - - - -
1608I PRO* 3.2 36.7 - - + +
1610I MET* 3.4 41.9 - - + +
1652I ASP* 2.7 29.4 + - + +
1668I GLU* 3.9 15.7 - - + -
1669I ALA* 3.0 35.4 + - + +
1670I ARG 5.1 1.4 - - - +
1672I ASN* 1.3 92.5 + - + +
1674I CYS* 1.3 62.8 + - - +
1675I GLY 3.4 3.6 - - - +
1700I LEU* 3.6 8.1 - - - +
----------------------------------------------------------
Back to top of page
A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il