Contacts of the helix formed by residues 301 - 305 (chain C) in PDB entry 3LUE
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 GLY 301 (chain C).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
137C GLN* 5.9 1.3 - - - -
141C SER* 4.6 1.6 + - - -
154C ASP* 4.9 4.0 - - - -
155C SER 3.3 15.5 - - - -
156C GLY* 4.8 2.2 - - - -
300C SER* 1.3 73.0 - - - +
302C GLY* 1.3 62.5 + - - -
304C THR* 2.8 20.8 + - - -
305C MET* 4.0 4.5 - - - +
335C ARG 2.9 20.8 + - - +
339C VAL* 5.0 9.8 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 302 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
155C SER 3.4 2.8 + - - -
156C GLY* 4.7 4.5 - - - -
301C GLY* 1.3 68.9 - - - -
303C THR* 1.3 57.4 + - - +
304C THR 2.8 7.1 + - - -
305C MET* 3.0 28.4 + - - +
306C TYR* 5.9 0.7 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 303 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
155C SER* 3.0 38.0 + - - +
156C GLY 2.8 18.9 + - - -
181C ALA 4.2 1.8 - - - -
182C GLY* 2.8 25.1 + - - +
185C LEU* 3.9 13.9 - - + -
213C LYS* 6.0 0.2 - - - -
261C LEU* 3.9 22.5 - - + +
302C GLY* 1.3 70.1 - - - -
304C THR* 1.4 57.9 + - - +
305C MET 3.3 2.2 - - - -
306C TYR* 3.4 26.4 + - + +
309C ILE* 4.1 5.9 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 304 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
153C MET* 4.0 15.0 - - + +
155C SER* 4.2 11.0 - - - -
299C LEU* 3.8 22.0 - - + -
300C SER 3.1 32.7 - - - +
301C GLY 2.8 13.5 + - - -
302C GLY 2.8 1.8 + - - -
303C THR* 1.4 77.3 - - - +
305C MET* 1.3 53.6 + - - +
306C TYR 3.3 3.1 - - - -
309C ILE* 3.2 20.1 - - + +
335C ARG* 2.6 48.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with MET 305 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
301C GLY 4.0 6.1 - - - +
302C GLY* 3.0 27.4 + - - +
303C THR 3.3 0.4 - - - -
304C THR* 1.3 80.8 - - - +
306C TYR* 1.3 64.5 + - + +
307C PRO* 3.4 8.3 - - - +
333C PRO 5.0 9.2 - - - +
335C ARG* 4.0 40.0 + - - +
336C LYS* 4.6 26.7 - - + -
----------------------------------------------------------
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