Contacts of the helix formed by residues 3151 - 3157 (chain D) in PDB entry 3CMT
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 PRO3151 (chain D).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
3123D GLU* 3.5 16.6 - - - +
3149D LEU 3.3 9.8 - - - +
3150D THR* 1.3 87.6 - - - +
3152D LYS* 1.3 66.5 + - - +
3153D ALA 4.4 0.2 - - - +
3154D GLU* 3.1 35.2 + - + +
3155D ILE* 3.1 10.4 + - - +
3166D LEU* 3.9 28.5 - - + -
3167D ALA* 3.9 35.2 - - + +
3170D MET* 4.3 7.6 - - - -
4176D ARG* 5.1 1.6 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS3152 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
3121D THR* 3.9 28.5 - - + +
3123D GLU* 2.7 27.6 + - + +
3151D PRO* 1.3 71.3 - - - +
3153D ALA* 1.3 58.1 + - - +
3155D ILE* 3.3 4.3 + - + +
3156D GLU* 3.0 63.2 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA3153 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
3151D PRO* 3.3 1.0 - - - +
3152D LYS* 1.3 78.4 - - - +
3154D GLU* 1.3 53.3 + - - +
3156D GLU* 3.8 7.6 - - - +
3157D GLY* 2.8 30.7 + - - -
3163D HIS* 3.7 12.9 - - + +
3166D LEU* 3.9 22.9 - - + -
2009F T 5.9 2.2 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU3154 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
3150D THR* 3.6 13.3 - - + +
3151D PRO* 3.1 34.4 + - + +
3153D ALA* 1.3 77.4 - - - +
3155D ILE* 1.3 62.6 - - - +
3157D GLY 3.3 10.0 + - - +
3158D GLU 4.7 0.9 - - - +
3163D HIS* 3.4 33.5 + - + +
4173D GLN* 3.0 31.9 - - - +
4176D ARG* 3.0 33.9 + - - -
4177D LYS* 3.1 27.8 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE3155 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
3120D ASP* 3.2 28.3 - - + +
3121D THR* 3.8 14.6 - - + -
3150D THR* 3.6 39.7 - - + +
3151D PRO 3.1 3.0 + - - +
3152D LYS* 3.7 9.0 - - + +
3154D GLU* 1.3 80.0 - - - +
3156D GLU* 1.3 66.8 + - + +
3157D GLY 3.4 1.0 - - - +
4130D ASP* 4.9 1.4 - - - +
4134D ARG* 5.3 3.5 + - - -
4176D ARG 5.5 1.1 - - - +
4177D LYS* 3.3 32.8 + - - +
4181D ASN* 5.7 9.0 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU3156 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
3152D LYS* 3.0 55.6 + - - +
3153D ALA* 4.1 6.6 + - - +
3155D ILE* 1.3 79.3 - - + +
3157D GLY* 1.3 65.3 + - - +
3158D GLU* 5.7 0.2 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY3157 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
3153D ALA 2.8 19.1 + - - -
3154D GLU 3.3 4.8 + - - +
3155D ILE 3.3 1.3 - - - +
3156D GLU* 1.3 81.8 - - - +
3158D GLU* 1.3 59.8 + - - +
3161D ASP* 3.5 9.6 - - - -
3163D HIS* 4.7 4.5 - - - -
4177D LYS* 2.6 29.3 + - - -
----------------------------------------------------------
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